Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers

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' Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers SCRIPTION The is low-power transceivers for RS-485 and RS-422 communication. IC contains one driver and one receiver.

1 ' Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers SCRIPTION The is low-power transceivers for RS-485 and RS-422 communication. IC contains one driver and one receiver. The driver slew rates of the is not limited, allowing them to transmit up to 2.5Mbps. These transceivers draw between 120μA and 500μA of supply current when unloaded or fully loaded with disabled drivers. All parts operate from a single 5V supply. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit. The is designed for halfduplex applications. SOP-8 FEATURES Low Quiescent Current: 300μA -7V to +12V Common-Mode Input Voltage Range Three-State Outputs 30ns Propagation Delays, 5ns Skew Half-Duplex Versions Available Operate from a Single 5V Supply Allows up to 32 Transceivers on the Bus Data rate: 2.5 Mbps Current-Limiting and Thermal Shutdown for Driver Overload Protection TRUTH TABLE Transmission Inputs Outputs RE A B X X X Z Z 1 0 X Z Z Receiver Inputs Outputs Pin Configuration and Logic Diagram RE A-B RO V V 0 RO 1 R 8 VCC 0 0 Open X Z RE 2 7 B 3 6 A 4 D 5 GND OCT. 2015_Preliminary HTC

2 Ordering Information Package Oder No. Description Marking Compliance Status SOP-8 ED RS-485/RS-422 Transceivers E RoHS, Green Active TJ 485 Package Type - D : SOP-8 T A - E : -40 ~ 85 Root Name Product Code OCT. 2015_Preliminary HTC

3 Absolute Maximum Ratings Characteristic Symbol Min Max Unit Supply Voltage V CC 12 V Control Input Voltage V, V RE -0.5 V CC V Driver Input Voltage V -0.5 V CC V Driver Output Voltage A, B V Receiver Input Voltage A, B V Receiver Output Voltage V RO -0.5 V CC V Storage Temperature Range T STG Operating Ratings Characteristic Symbol Min Max Unit Supply Voltage V CC V Operating Temperature Ranges T A OCT. 2015_Preliminary HTC

4 PIN CONFIGURATION RO 1 8 VCC RE 2 ED 7 B 3 6 A 4 5 GND PIN SCRIPTION Pin No. Symbol Pin Descriptions 1 RO Receiver Output 2 RE* Receiver Output Enable 3 Driver Output Enable 4 Driver Input 5 GND Ground 6 A Non-inverting Driver Output and Receiver Input 7 B Inverting Driver Output and Receiver Input 8 V CC Power Supply: 4.75V to 5.25V OCT. 2015_Preliminary HTC

5 ELECTRICAL CHARACTERISTICS Unless otherwise specified: V CC = 5V ± 5%, T A = T MIN to T MAX PARAMETER Symbol CONTIONS MIN TYP MAX UNITS Differential Driver Output (no load) V OD1 5 V Differential Driver Output R = 50Ω (RS-422), Figure 1 2 V OD2 (with load) R = 27Ω (RS-485), Figure V Change in Magnitude of Driver Differential Output Voltage for ΔV OD R = 27Ω or 50Ω, Figure V Complementary Output States Driver Common-Mode Output Voltage V OC R = 27Ω or 50Ω, Figure 1 3 V Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States ΔV OC R = 27Ω or 50Ω, Figure V Input High Voltage V IH,, RE 2.0 V Input Low Voltage V IL,, RE 0.8 V Input Current I IN1,, RE ±2 ua Input Current (A, B) Receiver Differential Threshold Voltage I IN2 = V CC = or 5.25V V IN = 12V 1.0 V IN = -7V -0.8 V TH -7V V CM 12V V Receiver Input Hysteresis ΔV TH V CM = 70 mv Receiver Output High Voltage V OH I O = -4mA, V ID = 200mV 3.5 V Receiver Output Low Voltage V OL I O = 4mA, V ID = -200mV 0.4 V Three-State (High Impedance) Output Current at Receiver I OZR 0.4V V O 2.4V ±1 ua Receiver Input Resistance R IN -7V V CM 12V kω No-Load Supply Current ICC RE = or V CC =V CC = ua Driver Short-Circuit Current, V O = High I OSD1-7V V O 12V ma Driver Short-Circuit Current, V O = Low I OSD2-7V V O 12V ma Receiver Short-Circuit Current I OSR V O V CC 7 95 ma ma OCT. 2015_Preliminary HTC

6 SWITCHING CHARACTERISTICS Unless otherwise specified: V CC = 5V ± 5%, T A = T MIN to T MAX PARAMETER Symbol CONTIONS MIN TYP MAX UNITS Driver Input to Output t PLH R L = 54Ω ns t PHL C L = 100pF ns Driver Output Skew to Output t SKEW R L = 54Ω, C L = 100pF 5 10 ns Driver Enable to Output High t ZH C L = 100pF, R L = 1KΩ ns Driver Enable to Output Low t ZL C L = 100pF, R L = 1KΩ ns Driver Disable Time from Low t HZ C L = 15pF, R L = 1KΩ ns Driver Disable Time from High t LZ C L = 15pF, R L = 1KΩ ns Receiver Input to Output tplh - tphl Differential Receiver Skew Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable Time from Low Receiver Disable Time from High t PLH ns C L = 15pF t PHL ns t SKD C L = 15pF 5 10 ns t ZL C L = 15pF ns t ZH C L = 15pF ns t LZ C L = 15pF ns t HZ C L = 15pF ns Maximum Data Rate f MAX 2.5 Mbps OCT. 2015_Preliminary HTC

7 TEST CIRCUITS D V OD R L R L VOC Figure. 1 3V 1.5V 1.5V Y C L t PLH t PHL D R L V O Z V O 1/2V O 1/2V O Y Z V O 90% V FF = V(Y) - V(Z) 90% C L V FF -V O 10% 10% t R t F t SKEW = t PLH t PHL Figure. 2 OCT. 2015_Preliminary HTC

8 VCC D S1 C L R L OUT D S1 C L R L OUT 3V 1.5V 1.5V t ZL,SHDW t LZ 2.3V V OL + 0.5V OUT 2.3V V OH 0.5V t ZH,SHDW t HZ Figure. 3 V OH RI 1.5V V OUTPUT ID RO V OL 1.5V R RE* t C PHL t PLH L V ID INPUT -V ID 1.5V RO Figure. 4 OCT. 2015_Preliminary HTC

9 1.5V -1.5V S1 RI RI* R RO S2 VCC RE* C L 3V 1.5V 1.5V RE* t ZL,SHDW t LZ VCC 1.5V V OL + 0.5V RO 1.5V V OH 0.5V t ZH,SHDW t HZ Figure. 5 OCT. 2015_Preliminary HTC

10 PRELIMINARY REVISION NOTICE The information in this datasheet can be revised without any notice. OCT. 2015_Preliminary HTC

ILX485 Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers

ILX485 Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers General Description The ILX485 is low-power transceivers for RS-485 and RS- 422 communication. I contains one driver and one receiver. The driver