SN54AS760 Datasheet, PDF (5/6 Pages) Texas Instruments – OCTAL BUFFERS AND LINE DRIVERS WITH OPEN-COLLECTOR OUTPUTS

From Output
Under Test
CL
(see Note A)
SN54AS760, SN74ALS760, SN74AS760
OCTAL BUFFERS AND LINE DRIVERS
WITH OPEN-COLLECTOR OUTPUTS
SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995
PARAMETER MEASUREMENT INFORMATION
SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
VCC
Test
Point
RL
From Output
Under Test
CL
(see Note A)
RL
Test
Point
From Output
Under Test
CL
(see Note A)
7V
RL = R1 = R2
S1
R1
Test
Point
R2
LOAD CIRCUIT FOR
BI-STATE
TOTEM-POLE OUTPUTS
LOAD CIRCUIT
FOR OPEN-COLLECTOR OUTPUTS
LOAD CIRCUIT
FOR 3-STATE OUTPUTS
Timing
Input
tsu
Data
Input
1.3 V
th
1.3 V
1.3 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3.5 V
0.3 V
3.5 V
0.3 V
High-Level
Pulse
Low-Level
Pulse
1.3 V
tw
1.3 V
1.3 V
1.3 V
VOLTAGE WAVEFORMS
PULSE DURATIONS
3.5 V
0.3 V
3.5 V
0.3 V
Output
Control
(low-level
enabling)
tPZL
Waveform 1
S1 Closed
(see Note B)
tPZH
Waveform 2
S1 Open
(see Note B)
1.3 V
1.3 V
tPHZ
1.3 V
1.3 V
tPLZ
3.5 V
0.3 V
[3.5 V
VOL
0.3 V
VOH
0.3 V
[0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
Input
tPLH
In-Phase
Output
tPHL
Out-of-Phase
Output
(see Note C)
1.3 V
1.3 V
1.3 V
1.3 V
3.5 V
0.3 V
tPHL
VOH
1.3 V
VOL
tPLH
VOH
1.3 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
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. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%.
E. The outputs are measured one at a time with one transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
5