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SN7400DRG4 Datasheet(PDF) 7 Page - Texas Instruments |
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SN7400DRG4 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 21 page SN5400, SN54LS00, SN54S00 SN7400, SN74LS00, SN74S00 QUADRUPLE 2INPUT POSITIVENAND GATES SDLS025B − DECEMBER 1983 − REVISED OCTOBER 2003 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION SERIES 54/74 DEVICES tPHL tPLH tPLH tPHL LOAD CIRCUIT FOR 3-STATE OUTPUTS High-Level Pulse Low-Level Pulse VOLTAGE WAVEFORMS PULSE DURATIONS Input Out-of-Phase Output (see Note D) 3 V 0 V VOL VOH VOH VOL In-Phase Output (see Note D) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VCC RL Test Point From Output Under Test CL (see Note A) LOAD CIRCUIT FOR OPEN-COLLECTOR OUTPUTS LOAD CIRCUIT FOR 2-STATE TOTEM-POLE OUTPUTS (see Note B) VCC RL From Output Under Test CL (see Note A) Test Point (see Note B) VCC RL From Output Under Test CL (see Note A) Test Point 1 k Ω NOTES: A. CL includes probe and jig capacitance. B. All diodes are 1N3064 or equivalent. C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. D. S1 and S2 are closed for tPLH, tPHL, tPHZ, and tPLZ; S1 is open and S2 is closed for tPZH; S1 is closed and S2 is open for tPZL. E. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50 Ω; tr and tf ≤ 7 ns for Series 54/74 devices and tr and tf ≤ 2.5 ns for Series 54S/74S devices. F. The outputs are measured one at a time with one input transition per measurement. S1 S2 tPHZ tPLZ tPZL tPZH 3 V 3 V 0 V 0 V th tsu VOLTAGE WAVEFORMS SETUP AND HOLD TIMES Timing Input Data Input 3 V 0 V Output Control (low-level enabling) Waveform 1 (see Notes C and D) Waveform 2 (see Notes C and D) ≈1.5 V VOH − 0.5 V VOL + 0.5 V ≈1.5 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V tw 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V VOH VOL Figure 1. Load Circuits and Voltage Waveforms |
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