DESCRIPTIO TYPICAL APPLICATION. LT1130A/LT1140A Series Advanced Low Power 5V RS232 Drivers/Receivers with Small Capacitors

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1 FEATRES ESD Protection over ±kv (±kv IEC--- for LTA, LTA and LTA) ses Small Capacitors:.µF,.µF µa Supply Current in SHTDOWN kbaud Operation for R L = k, C L = pf kbaud Operation for R L = k, C L = pf CMOS Comparable Low Power Easy PC Layout: Flowthrough Architecture Rugged Bipolar Design: Absolutely No Latchup Outputs Assume a High Impedance State When Off or Powered Down Improved Protection: RS I/O Lines Can Be Forced to ±V Without Damage Output Overvoltage Does Not Force Current Back into Supplies Available in SO and SSOP Packages TYPICAL APPLICATION Basic Operation LTA/LTA Series Advanced Low Power V RS Drivers/Receivers with Small Capacitors DESCRIPTIO The LT A/LTA series of RS drivers/receivers features special bipolar construction techniques which protect the drivers and receivers beyond the fault conditions stipulated for RS. Driver outputs and receiver inputs can be shorted to ±V without damaging the device or the power supply generator. In addition, the RS I/O pins are resilient to multiple ±kv ESD strikes. An advanced driver output stage operates up to kbaud while driving heavy capacitive loads. Supply current is typically ma, competitive with CMOS devices. Several members of the series include flexible operating mode controls. The DRIVER DISABLE pin disables the drivers and the charge pump, the ON/OFF pin shuts down all circuitry. While shut down, the drivers and receivers assume high impedance output states., LTC and LT are registered trademarks of Linear Technology Corporation. Output Waveforms V.µF V V CC.µF TO LINE ON/OFF = V LTA V GND.µF TO LOGIC.µF DRIVER DISABLE A TA RECEIVER OTPT C L = pf DRIVER ROTPT R L = k C L = pf INPT LTA TA LTA -Driver/-Receiver RS Transceiver LTA -Driver/-Receiver RS Transceiver w/shutdown LTA -Driver/-Receiver RS Transceiver LTA -Driver/-Receiver RS Transceiver LTA -Driver/-Receiver RS Transceiver LTA -Driver/-Receiver RS Transceiver w/o Charge Pump LTA -Driver/-Receiver RS Transceiver w/shutdown LTA -Driver/-Receiver RS Transceiver w/shutdown LTA -Driver/-Receiver RS Transceiver w/shutdown LTA -Driver/-Receiver RS Transceiver w/shutdown LTA -Driver/-Receiver RS Transceiver w/o Charge Pump LTA -Driver/-Receiver RS Transceiver w/o Charge Pump

2 LTA/LTA Series ABSOLTE AXI RATI GS (Note ) W W W Supply Voltage (V CC )... V V....V V (Note )....V Input Voltage Driver... V to V Receiver... V to V On/Off Pin....V to V Driver Disable Pin....V to V CC.V Output Voltage Driver... V to V Receiver....V to V CC.V PRODCT SELECTIO TABLE Short-Circuit Duration V... sec V... sec Driver Output... Indefinite Receiver Output... Indefinite Operating Temperature Range LTXAC/LTXAC... C to C LTXAI/LTXAI... to C Storage Temperature Range... C to C Lead Temperature (Soldering, sec)... C Part Number Power Supply Voltages* Shutdown Driver Disable Drivers Receivers External Components LTA No No Capacitors LTA Yes Yes Capacitors LTA No No Capacitors LTA** No No Capacitors LTA No No Capacitors LTA,, No No None LTA Yes Yes Capacitors LTA** Yes Yes Capacitors LTA Yes Yes Capacitors LTA, Yes No Capacitors LTA,, Yes Yes None LTA**,, Yes Yes None *The LTA, LTA, LTA, LTA, LTA, LTA and LTA can operate with V and V supplies and two external capacitors. **Meets ±kv ESD air gap discharge and ±kv contact methods per IEC---. PACKAGE/ORDER I FOR -DRIVER/-RECEIVER V V V CC C C NW PACKAGE -LEAD PDIP (." WIDE) V LTA C C GND -LEAD PLASTIC SO WIDE (." WIDE) T JMAX = C, θ JA = C/W (NW) T JMAX = C, θ JA = C/W (SW) W ATIO LTACN LTACSW -DRIVER/-RECEIVER WITH SHTDOWN V V V CC C C ON/OFF NW PACKAGE -LEAD PDIP (." WIDE) V LTA C C GND DRIVER DISABLE -LEAD PLASTIC SO WIDE (." WIDE) T JMAX = C, θ JA = C/W (NW) T JMAX = C, θ JA = C/W (SW) LTACN LTACSW

3 LTA/LTA Series PACKAGE/ORDER I FOR -DRIVER/-RECEIVER W ATIO -DRIVER/-RECEIVER V V V CC C C LTA V C C GND -LEAD PDIP -LEAD PLASTIC SO WIDE (." WIDE) (." WIDE) LTACN LTACSW V V V CC C C LTA V C C GND -LEAD PDIP -LEAD PLASTIC SO WIDE (." WIDE) (." WIDE) LTACN LTACSW T JMAX = C, θ JA = C/W (N) T JMAX = C, θ JA = C/W (SW) T JMAX = C, θ JA = C/W (N) T JMAX = C, θ JA = C/W (SW) -DRIVER/-RECEIVER -DRIVER/-RECEIVER WITHOT CHARGE PMP V V V CC C C LTA V C C GND -LEAD PDIP -LEAD PLASTIC SO WIDE (." WIDE) (." WIDE) LTACN LTACSW LTAIN LTAISW V V V V CC -LEAD PDIP (." WIDE) LTA V V GND -LEAD PLASTIC SO WIDE (." WIDE) LTACN LTACSW T JMAX = C, θ JA = C/W (N) T JMAX = C, θ JA = C/W (SW) T JMAX = C, θ JA = C/W (N) T JMAX = C, θ JA = C/W (SW) -DRIVER/-RECEIVER WITH SHTDOWN V V V CC C C ON/OFF NW PACKAGE -LEAD PDIP (." WIDE) V LTA C C GND DRIVER DISABLE -LEAD PLASTIC SO WIDE (." WIDE) T JMAX = C, θ JA = C/W (NW) T JMAX = C, θ JA = C/W (SW) LTACN LTACSW -DRIVER/-RECEIVER WITH SHTDOWN V V V CC C C ON/OFF NC GW PACKAGE -LEAD PLASTIC SSOP (." WIDE) LTA NW PACKAGE -LEAD PDIP (." WIDE) V C C GND DRIVER DISABLE NC -LEAD PLASTIC SO WIDE (." WIDE) T JMAX = C, θ JA = C/W (GW) T JMAX = C, θ JA = C/W (NW) T JMAX = C, θ JA = C/W (SW) LTACG LTACN LTACSW LTAIN LTAISW

4 LTA/LTA Series PACKAGE/ORDER I FOR W -DRIVER/-RECEIVER WITH SHTDOWN V V V CC C C ON/OFF NC GW PACKAGE -LEAD PLASTIC SSOP (." WIDE) LTA NW PACKAGE -LEAD PDIP (." WIDE) V C C GND DRIVER DISABLE NC -LEAD PLASTIC SO WIDE (." WIDE) T JMAX = C, θ JA = C/W (GW) T JMAX = C, θ JA = C/W (NW) T JMAX = C, θ JA = C/W (SW) -DRIVER/-RECEIVER WITH SHTDOWN WITHOT CHARGE PMP V V V V CC N.C. LTA V V N.C. ON/OFF GND DRIVER DISABLE -LEAD PDIP -LEAD PLASTIC SO WIDE (." WIDE) (." WIDE) T JMAX = C, θ JA = C/W (N) T JMAX = C, θ JA = C/W (SW) Consult factory for Industrial and Military grade parts. ATIO LTACG LTACN LTACSW LTAIG LTACN LTACSW -DRIVER/-RECEIVER WITH SHTDOWN WITH V AND V SPPLIES N.C. V V CC V INPT LTA V C C ON/OFF GND -LEAD PDIP -LEAD PLASTIC SO WIDE (." WIDE) (." WIDE) T JMAX = C, θ JA = C/W (N) T JMAX = C, θ JA = C/W (SW) -DRIVER/-RECEIVER WITH SHTDOWN WITHOT CHARGE PMP V V V V CC N.C. LTA V V N.C. ON/OFF GND DRIVER DISABLE -LEAD PDIP -LEAD PLASTIC SO WIDE (." WIDE) (." WIDE) T JMAX = C, θ JA = C/W (N) T JMAX = C, θ JA = C/W (SW) LTACN LTACSW LTACN LTACSW ELECTRICAL CHARA CTERISTICS (Note ) PARAMETER CONDITIONS TYP MAX NITS Power Supply Generator V Output. V V Output. V V V CC Supply Current: LTA, LTA, LTA, (Note ) ma LTA, LTA, LTA, LTA V V CC Supply Current: LTA, LTA, LTA (Note ), V = V, V = V ma V V CC Supply Current: LTA (Note ) ma V V CC Supply Current: LTA (Note ), V = V ma V V Supply Current: LTA, LTA, LTA (Note ), V = V ma V V Supply Current: LTA (Note ) ma V V Supply Current: LTA, LTA, LTA (Note ) V = V ma

5 ELECTRICAL CHARA CTERISTICS (Note ) LTA/LTA Series PARAMETER CONDITIONS TYP MAX NITS Supply Current when OFF (V CC ) Shutdown (Note ) µa Driver Disable ma Supply Rise Time C, C, C, C =.µf. ms Shutdown to Turn-On C, C =.µf, C, C =.µf. ms ON/OFF Pin Thresholds Input Low Level (Device Shut Down).. V Input High Level (Device Enabled).. V ON/OFF Pin Current V V ON/OFF V µa DRIVER DISABLE Pin Thresholds Input Low Level (Drivers Enabled).. V Input High Level (Drivers Disabled).. V DRIVER DISABLE Pin Current V V DRIVER DISABLE V µa Oscillator Frequency khz Any Driver Output Voltage Swing Load = k to GND Positive. V Negative. V Logic Input Voltage Level Input Low Level (V OT = High).. V Input High Level (V OT = Low). V Logic Input Current.V V IN V µa Output Short-Circuit Current V OT = V ± ± ma Output Leakage Current Shutdown V OT = ±V (Note ) µa Data Rate R L = k, C L = pf kbaud R L = k, C L = pf kbaud Slew Rate R L = k, C L = pf V/µs R L = k, C L = pf (Note ) V/µs Propagation Delay Output Transition t HL High to Low (Note ).. µs Output Transition t LH Low to High.. µs Any Receiver Input Voltage Thresholds Input Low Threshold (V OT = High).. V Input High Threshold (V OT = Low).. V Hysteresis.. V Input Resistance V < V IN < V kω Output Voltage Output Low, I OT =.ma.. V Output High, I OT = µa (V CC = V).. V Output Leakage Current Shutdown (Note ) V OT V CC µa Output Short-Circuit Current Sinking Current, V OT = V CC ma Sourcing Current, V OT = V ma Propagation Delay Output Transition t HL High to Low (Note ) ns Output Transition t LH Low to High ns The denotes specifications which apply over the operating temperature range ( C T A C for commercial grade and C T A C for industrial grade). Note : Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note : Testing done at V CC = V and V ON/OFF = V. Note : Supply current is measured with driver and receiver outputs unloaded and the driver inputs tied high. Note : Supply current and driver leakage current measurements in shutdown are performed with V ON/OFF =.V. Supply current measurements using DRIVER DISABLE are performed with V DRIVER DISABLE = V. For LT, LT, LT and LT with V supplies, V OT leakage is µa for V OT forced to ±V. Note : For driver delay measurements, R L = k and C L = pf. Trigger points are set between the driver s input logic threshold and the output transition to the zero crossing (t HL =.V to V and t LH =.V to V). Note : For receiver delay measurements, C L = pf. Trigger points are set between the receiver s input logic threshold and the output transition to standard TTL/CMOS logic threshold (t HL =.V to.v and t LH =.V to.v). Note : For LTA/LTA, absolute maximum externally applied V =.V. Internal charge pump will drive this pin to a higher negative voltage. Note : For LTA, V/µs minimum.

6 LTA/LTA Series TYPICAL PERFOR A W CE CHARA CTERISTICS PT VOLTAGE (V) Driver Output Voltage R L = k OTPT HIGH V CC =.V V CC = V V CC =.V V CC =.V V CC = V V CC =.V OTPT LOW THRESHOLD VOLTAGE (V) Receiver Input Thresholds INPT HIGH INPT LOW SPPLY CRRENT (ma) Supply Current vs Data Rate DRIVER R L = k C L = pf DRIVER R L = k C L = pf TEMPERATRE ( C). TEMPERATRE ( C) DATA RATE (kbaud) LTA TPC LTA TPC LTA TPC Supply Current in Shutdown Supply Current in Driver Disable. Driver Disable Threshold. SPPLY CRRENT (µa) SPPLY CRRENT (ma) THRESHOLD VOLTAGE (V)..... TEMPERATRE ( C) TEMPERATRE ( C) TEMPERATRE ( C) LTA TPC LTA TPC LTA TPC THRESHOLD VOLTAGE (V) ON/OFF Thresholds Supply Current Driver Leakage in Shutdown ON THRESHOLD OFF THRESHOLD TEMPERATRE ( C) SPPLY CRRENT (ma) DRIVER DRIVER DRIVER NO LOAD TEMPERATRE ( C) LEAKAGE CRRENT (µa) V OT = V V OT = V. TEMPERATRE ( C) LTA TPC LTA TPC LTA TPC

LTA/LTA Series TYPICAL PERFOR A W CE CHARA CTERISTICS Driver Short-Circuit Current Receiver Short-Circuit Current SHORT-CIRCIT CRRENT (ma) ISC ISC SHORT-CIRCIT CRRENT (ma) ISC ISC TEMPERATRE ( C)

CTIO S V CC : V Input Supply Pin. Supply current drops to zero in the shutdown mode. This pin should be decoupled with a.µf ceramic capacitor close to the package pin.

7 LTA/LTA Series TYPICAL PERFOR A W CE CHARA CTERISTICS Driver Short-Circuit Current Receiver Short-Circuit Current SHORT-CIRCIT CRRENT (ma) ISC ISC SHORT-CIRCIT CRRENT (ma) ISC ISC TEMPERATRE ( C) TEMPERATRE ( C) LTA TPC LTA TPC Shutdown to Driver Output Driver Output Waveforms DRIVER OTPT HIGH R L = k DRIVER OTPT LOW R L = k ON/OFF PIN PT R L = k PT R L = k C L = pf INPT LTA TPC LTA TPC PI F CTIO S V CC : V Input Supply Pin. Supply current drops to zero in the shutdown mode. This pin should be decoupled with a.µf ceramic capacitor close to the package pin. Insufficient supply bypassing can result in low output drive levels and erratic charge pump operation. GND: Ground Pin. ON/OFF: Control the operation mode of the device and is TTL/CMOS compatible. A logic low puts the device in the shutdown mode which reduces input supply curent to zero and places all of the drivers and receivers in high impedance state. A logic high fully enables the transceiver. DRIVER DISABLE: This pin provides an alternate control for the charge pump and RS drivers. A logic high on this pin shuts down the charge pump and places all drivers in a high impedance state. Receivers remain active under these conditions. Floating the DRIVER DISABLE pin or driving it to a logic low level fully enables the transceiver. A logic low on the ON/OFF pin supersedes the state of the DRIVER DISABLE pin. Supply current drops to ma when in driver disable mode. V : Positive Supply Output (RS Drivers). V V CC.V. This pin requires an external charge storage capacitor C.µF, tied to ground or V CC. Larger value capacitors may be used to reduce supply ripple. With multiple transceivers, the V and V pins may be paralleled into common capacitors. For large numbers of transceivers, increasing the size of the shared common storage capacitors is recommended to reduce ripple.

8 LTA/LTA Series PI F CTIO S V : Negative Supply Output (RS Drivers). V (V CC.V). This pin requires an external charge storage capacitor C.µF. V is short-circuit proof for seconds. C, C, C, C : Commutating Capacitor Inputs. These pins require two external capacitors C.µF: one from C to C, and another from C to C. To maintain charge pump efficiency, the capacitor s effective series resistance should be less than Ω. For C µf, low ESR tantalum capacitors work well in this application, although small value ceramic capacitors may be used with a minimal reduction in charge pump compliance. In applications where larger positive voltages are available, such as V, C may be omitted and the positive voltage may be connected directly to the C pin. In this mode of operation, the V pin should be decoupled with a.µf ceramic capacitor. : RS Driver Input Pins. These inputs are TTL/CMOS compatible. Inputs should not be allowed to float. Tie unused inputs to V CC. : Driver Outputs at RS Voltage Levels. Driver output swing meets RS levels for loads up to k. Slew rates are controlled for lightly loaded lines. Output current capability is sufficient for load conditions up to pf. Outputs are in a high impedance state when in shutdown mode, V CC = V, or when the DRIVER DISABLE pin is active. Outputs are fully short-circuit protected from V V to V V. Applying higher voltages will not damage the device if the overdrive is moderately current limited. Short circuits on one output can load the power supply generator and may disrupt the signal levels of the other outputs. The driver outputs are protected against ESD to ±kv for human body model discharges. : Receiver Inputs. These pins accept RS level signals (±V) into a protected k terminating resistor. The receiver inputs are protected against ESD to ±kv for human body model discharges. Each receiver provides.v of hysteresis for noise immunity. Open receiver inputs assume a logic low state. : Receiver Outputs with TTL/CMOS Voltage Levels. Outputs are in a high impedance state when in shutdown mode to allow data line sharing. Outputs are fully short-circuit protected to ground or V CC with the power on, off, or in shutdown mode. ESD PROTECTIO The RS line inputs of the LTA/LTA series of RS Driver/Receivers have on-chip protection from ESD transients up to ±kv. The protection structures act to divert the static discharge safely to system ground. In order for the ESD protection to function effectively, the power supply and ground pins of the LTA/LTA must be connected to ground through low impedances. The power supply decoupling capacitors and charge pump storage capacitors provide this low impedance in normal application of the circuit. The only constraint is that low ESR capacitors must be used for bypassing and charge storage. ESD testing must be done with pins V CC, V, V and GND shorted to ground or connected with low ESR capacitors. The ESD protection on the LTA, LTA and LTA meets ±kv air gap discharge and ±kv contact methods per IEC---..µF RS LINE PINS PROTECTED TO ±kv ESD Test Circuit V V V V CC LTA.µF.µF.µF.µF DRIVER IN DRIVER OT RX OT RX IN DRIVER IN DRIVER OT RX OT RX IN RX OT RX IN RX OT RX IN DRIVER IN DRIVER OT RX OT RX IN GND ON/OFF DRIVER DISABLE LTA ESD TC

9 LTA/LTA Series TYPICAL APPLICATIO S Operation sing V and V Power Supplies V V V LTA CC V V CC.µF.µF V V C.µF.µF C TO LOGIC TO LINE ON/FF = V GND DRIVER DISABLE LTA TA Typical Mouse Driving Application MOSE V LOGIC OPTICS V () () ().µf DCD DSR RX RTS TX CTS DTR RI V V V CC.µF DRIVER OT RX IN DRIVER OT RX IN RX IN RX IN DRIVER OT RX IN ON/OFF LTA V.µF.µF DRIVER IN LOGIC RX OT DRIVER IN LOGIC RX OT RX OT MOSE DATA RX OT DRIVER IN LOGIC RX OT GND DRIVER DISABLE DB LTA TA

10 LTA/LTA Series PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted. GW Package -Lead Plastic SSOP (Wide.) (LTC DWG # --)..** (..).. (..)..* (..).. (..).. (..) * DIMENSIONS DO NOT INCLDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED." (.mm) PER SIDE ** DIMENSIONS DO NOT INCLDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED." (.mm) PER SIDE. (.) BSC.. (..).. (..).. (..) G SSOP N Package -Lead PDIP (Narrow.) (LTC DWG # --).. (..). ±. (. ±.).. (..).* (.) MAX.. (..) ( ). (.). (.). (.). ±. (. ±.). (.) TYP. ±. (. ±.). ±.* (. ±.) N *THESE DIMENSIONS DO NOT INCLDE MOLD FLASH OR PROTRSIONS. MOLD FLASH OR PROTRSIONS SHALL NOT EXCEED. INCH (.mm) N Package -Lead PDIP (Narrow.) (LTC DWG # --).. (..). ±. (. ±.).. (..).* (.).. (..) ( ). (.). (.). (.). ±. (. ±.). ±. (. ±.). ±.*. (. ±.) (.) TYP N *THESE DIMENSIONS DO NOT INCLDE MOLD FLASH OR PROTRSIONS. MOLD FLASH OR PROTRSIONS SHALL NOT EXCEED. INCH (.mm)

11 PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted. LTA/LTA Series NW Package -Lead PDIP (Wide.) (LTC DWG # --).. (..). ±. (. ±.).. (..). (.) TYP.* (.) MAX.. (..).... (. ).. (.). (.). (.) *THESE DIMENSIONS DO NOT INCLDE MOLD FLASH OR PROTRSIONS. MOLD FLASH OR PROTRSIONS SHALL NOT EXCEED. INCH (.mm). ±. (. ±.). ±. (. ±.)..* (..) N SW Package -Lead Plastic Small Outline (Wide.) (LTC DWG # --)..** (..).. (..).. (..).. (..)..* (..) TYP.. (..). (.) TYP.. (..) TYP NOTE.. (..) NOTE:. PIN IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANFACTRING OPTIONS. THE PART MAY BE SPPLIED WITH OR WITHOT ANY OF THE OPTIONS *DIMENSION DOES NOT INCLDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED." (.mm) PER SIDE ** DIMENSION DOES NOT INCLDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED." (.mm) PER SIDE.. (..) NOTE.. (..) S (WIDE) SW Package -Lead Plastic Small Outline (Wide.) (LTC DWG # --)..** (..).. (..).. (..).. (..)..* (..) TYP.. (..) NOTE.. (..). (.) TYP.. (..) NOTE:. PIN IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANFACTRING OPTIONS. THE PART MAY BE SPPLIED WITH OR WITHOT ANY OF THE OPTIONS *DIMENSION DOES NOT INCLDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED." (.mm) PER SIDE ** DIMENSION DOES NOT INCLDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED." (.mm) PER SIDE.. (..) NOTE.. (..) S (WIDE) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

12 LTA/LTA Series PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted. SW Package -Lead Plastic Small Outline (Wide.) (LTC DWG # --)..** (..).. (..).. (..).. (..)..* (..) TYP.. (..) NOTE.. (..). (.) TYP.. (..) NOTE:. PIN IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANFACTRING OPTIONS. THE PART MAY BE SPPLIED WITH OR WITHOT ANY OF THE OPTIONS *DIMENSION DOES NOT INCLDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED." (.mm) PER SIDE ** DIMENSION DOES NOT INCLDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED." (.mm) PER SIDE NOTE.. (..).. (..) S (WIDE) TYPICAL APPLICATION Sharing Power Supply Generator with a Second Transceiver µf µf TO RS LINE V V V CC C µf C LTA V C C GND µf TO LOGIC TO RS LINE V V VCC NC ON/OFF LTA V NC GND DRIVER DISABLE TO LOGIC RELATED PARTS PART DESCRIPTION COMMENTS LTA/LTA -Driver/-Receiver RS Transceivers Single V Supply with.µf Capacitors LT -Driver/-Receiver RS Transceiver Lower Power pgrade for LTA LTC -Driver/-Receiver RS Transceiver.V Operation LTC -Driver/-Receiver RS Transceiver ltralow Power for DTE Applications LTC -Driver/-Receiver RS Transceiver ltralow Power for DCE Applications LTC -Driver/-Receiver RS Transceiver.V to V Operation Linear Technology Corporation McCarthy Blvd., Milpitas, CA - () - FAX: () - TELEX: - asfa LT/TP K REV A PRINTED IN SA LINEAR TECHNOLOGY CORPORATION

LT1342 5V RS232 Transceiver with 3V Logic Interface DESCRIPTIO

LT1342 5V RS232 Transceiver with 3V Logic Interface DESCRIPTIO V RS Transceiver with V Logic Interface FEATRES ESD Protection Over ±kv V Logic Interface ses Small Capacitors:.µF,.µF µa Supply Current in Shutdown Low Power Driver Disable Operating Mode Pin Compatible