High-Current -State s Drive Bus Lines Directly or up to LSTTL Loads Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), Thin Shrink Small-Outline (PW), and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 00-mil DIPs description These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. The devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control () input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated. The SN4HC4 is characterized for operation over the full military temperature range of C to C. The SN74HC4 is characterized for operation from 40 C to 8 C. A A4 A A6 A7 SN4HC4, SN74HC4 SN4HC4...J OR W PACKAGE SN74HC4... DB, DW, N, OR PW PACKAGE (TOP VIEW) A A A A4 A A6 A7 A8 GND 4 6 7 8 9 0 SN4HC4... FK PACKAGE (TOP VIEW) A A B8 B7 V CC B6 OE 4 0 9 8 6 7 7 6 8 4 9 0 A8 GND 0 9 8 7 6 4 V CC OE B B B B4 B B6 B7 B8 B B B B4 B FUNCTION TABLE INPUTS OE OPERATION L L B data to A bus L H A data to B bus H X Isolation Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 997, Texas Instruments Incorporated POST OFFICE BOX 60 DALLAS, TEXAS 76
logic symbol OE 9 G EN [BA] EN [AB] A 8 B A A A4 A A6 A7 A8 4 6 7 8 9 7 6 4 B B B4 B B6 B7 B8 This symbol is in accordance with ANSI/IEEE Std 9-984 and IEC Publication 67-. logic diagram (positive logic) 9 OE A 8 B To Seven Other Channels POST OFFICE BOX 60 DALLAS, TEXAS 76
absolute maximum ratings over operating free-air temperature range SN4HC4, SN74HC4 Supply voltage range, V CC.......................................................... 0. V to 7 V Input clamp current, I IK (V I < 0 or V I > V CC ) (see Note ).................................... ±0 ma clamp current, I OK (V O < 0 or V O > V CC ) (see Note )................................ ±0 ma Continuous output current, I O (V O = 0 to V CC ).............................................. ± ma Continuous current through V CC or GND................................................... ±70 ma Package thermal impedance, θ JA (see Note ): DB package................................ C/W DW package................................. 97 C/W N package................................... 67 C/W PW package................................ 8 C/W Storage temperature range, T stg................................................... 6 C to 0 C Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES:. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.. The package thermal impedance is calculated in accordance with JESD, except for through-hole packages, which use a trace length of zero. recommended operating conditions SN4HC4 SN74HC4 MIN NOM MAX MIN NOM MAX Supply voltage 6 6 V = V.. VIH High-level input voltage = 4. V.. V = 6 V 4. 4. = V 0 0. 0 0. VIL Low-level input voltage = 4. V 0. 0. V = 6 V 0.8 0.8 VI Input voltage 0 0 V VO voltage 0 0 V = V 0 000 0 000 tt Input transition (rise and fall) time = 4. V 0 00 0 00 ns = 6 V 0 400 0 400 TA Operating free-air temperature 40 8 C POST OFFICE BOX 60 DALLAS, TEXAS 76
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS TA = C SN4HC4 SN74HC4 MIN TYP MAX MIN MAX MIN MAX V.9.998.9.9 IOH = 0 µa 4. V 4.4 4.499 4.4 4.4 VOH VI = VIH or VIL 6 V.9.999.9.9 V IOH = 6 ma 4. V.98 4..7.84 IOH = 7.8 ma 6 V.48.8..4 V 0.00 0. 0. 0. IOL = 0 µa 4. V 0.00 0. 0. 0. VOL VI = VIH or VIL 6 V 0.00 0. 0. 0. V IOL = 6 ma 4. V 0.7 0.6 0.4 0. IOL = 7.8 ma 6 V 0. 0.6 0.4 0. II or OE VI = or 0 6 V ±0. ±00 ±000 ±000 na IOZ A or B VO = or 0 6 V ±0.0 ±0. ±0 ± µa ICC VI = or 0, IO = 0 6 V 8 60 80 µa Ci or OE V to 6 V 0 0 0 pf switching characteristics over recommended operating free-air temperature range, C L = 0 pf (unless otherwise noted) (see Figure ) PARAMETER FROM (INPUT) TO (OUTPUT) TA = C SN4HC4 SN74HC4 MIN TYP MAX MIN MAX MIN MAX V 40 0 60 0 tpd A or B B or A 4. V 6 ns 6 V 8 7 V 0 40 90 ten OE A or B 4. V 46 68 8 ns 6 V 0 9 8 49 V 74 00 00 0 tdis OE A or B 4. V 40 60 0 ns 6 V 4 4 V 0 60 90 7 tt A or B 4. V 8 8 ns 6 V 6 0 4 POST OFFICE BOX 60 DALLAS, TEXAS 76
switching characteristics over recommended operating free-air temperature range, C L = 0 pf (unless otherwise noted) (see Figure ) PARAMETER FROM (INPUT) TO (OUTPUT) TA = C SN4HC4 SN74HC4 MIN TYP MAX MIN MAX MIN MAX V 4 00 70 tpd A or B B or A 4. V 8 7 40 4 ns 6 V 4 9 V 0 70 40 ten OE A or B 4. V 4 8 67 ns 6 V 46 69 6 V 4 0 6 tt A or B 4. V 7 4 6 ns 6 V 6 4 operating characteristics, T A = C PARAMETER TEST CONDITIONS TYP Cpd Power dissipation capacitance per transceiver No load 40 pf POST OFFICE BOX 60 DALLAS, TEXAS 76
PARAMETER MEASUREMENT INFORMATION PARAMETER RL CL S S From Under Test CL (see Note A) Test Point RL LOAD CIRCUIT S S ten tpzh tpzl tdis tphz tplz tpd or tt kω kω 0 pf or 0 pf 0 pf 0 pf or 0 pf Input 0 V tplh tphl In-Phase Out-of-Phase 0% tphl 90% 90% 90% VOH 0% VOL tf VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES tr 0% 0% tf tplh VOH 90% VOL tr Control (Low-Level Enabling) tpzl Waveform (See Note B) tplz 0% 0 V VOL tpzh Input 0% 90% 90% tr 0% 0 V tf Waveform (See Note B) 90% tphz VOH 0 V VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES FOR -STATE OUTPUTS NOTES: A. CL includes probe and test-fixture capacitance. B. Waveform is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform is for an output with internal conditions such that the output is high except when disabled by the output control. C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR MHz, ZO = 0 Ω, tr = 6 ns, tf = 6 ns. D. The outputs are measured one at a time with one input transition per measurement. E. tplz and tphz are the same as tdis. F. tpzl and tpzh are the same as ten. G. tplh and tphl are the same as tpd. Figure. Load Circuit and Voltage Waveforms 6 POST OFFICE BOX 60 DALLAS, TEXAS 76
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