SN54AHCT32, SN74AHCT32
QUADRUPLE 2 INPUT POSITIVE OR GATES
SCLS248L − OCTOBER 1995 − REVISED JULY 2003
PARAMETER MEASUREMENT INFORMATION
RL = 1 kΩ
S1
VCC
Open
GND
From Output
Under Test
CL
(see Note A)
Test
Point
From Output
Under Test
CL
(see Note A)
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open Drain
S1
Open
VCC
GND
VCC
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
LOAD CIRCUIT FOR
3-STATE AND OPEN-DRAIN OUTPUTS
3V
Timing Input
1.5 V
0V
3V
tsu
Data Input
0V
1.5 V
th
3V
1.5 V
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3V
3V
1.5 V
tPZL
50% VCC
tPZH
Output
Waveform 2
S1 at GND
(see Note B)
50% VCC
1.5 V
0V
tPLZ
≈V
CC
VOL + 0.3 V
VOL
tPHZ
VOH − 0.3 V
VOH
≈0
V
tw
Input
1.5 V
1.5 V
VOLTAGE WAVEFORMS
PULSE DURATION
Input
tPLH
In-Phase
Output
tPHL
Out-of-Phase
Output
1.5 V
1.5 V
0V
tPHL
50% VCC
VOH
50% VCC
VOL
tPLH
50% VCC
VOH
50% VCC
VOL
Output
Control
Output
Waveform 1
S1 at VCC
(see Note B)
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
NOTES: A. CL includes probe and jig capacitance.
B. 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.
C. All input pulses are supplied by generators having the following characteristics: PRR
≤
1 MHz, ZO = 50
Ω,
tr
≤
3 ns, tf
≤
3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
E. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
5
TI [ TEXAS INSTRUMENTS ]
