ꢀ
ꢁ
ꢅ
ꢔ
ꢂ
ꢃ
ꢇ
ꢃ
ꢄ
ꢐ
ꢄ
ꢃ
ꢈ
ꢃ
ꢇ
ꢅ
ꢆ
ꢉ
ꢑ
ꢀ
ꢁ
ꢌ
ꢒ
ꢂ
ꢍ
ꢃ
ꢍ
ꢕ
ꢄ
ꢎ
ꢃ
ꢅ
ꢋ
ꢇ
ꢆ
ꢀ
ꢀ
ꢑ
ꢁ
ꢂ
ꢃ
ꢗ
ꢃ
ꢈ
ꢈ
ꢀ
ꢀ
ꢄ
ꢗ
ꢄ
ꢃ
ꢃ
ꢅ
ꢘ
ꢅ
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ꢆ
ꢀ
ꢀ
ꢁ
ꢁ
ꢙ
ꢂ
ꢅ
ꢒ
ꢃ
ꢃ
ꢈ
ꢈ
ꢔ
ꢀ
ꢀ
ꢑ
ꢄ
ꢄ
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ꢃ
ꢃ
ꢀ
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ꢇ
ꢀ
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ꢃ
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ꢅ
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ꢋ
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ꢊ ꢒ
ꢃ
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SDLS053B − OCTOBER 1976 − REVISED MAY 2004
PARAMETER MEASUREMENT INFORMATION
SERIES 54/74 DEVICES
V
CC
Test
Point
R
L
Test
Point
S1
V
CC
From Output
Under Test
V
CC
(see Note B)
R
L
C
L
(see Note A)
From Output
Under Test
1 kΩ
R
L
(see Note B)
From Output
Under Test
C
Test
Point
C
L
(see Note A)
L
(see Note A)
S2
LOAD CIRCUIT
LOAD CIRCUIT
LOAD CIRCUIT
FOR 2-STATE TOTEM-POLE OUTPUTS
FOR OPEN-COLLECTOR OUTPUTS
FOR 3-STATE OUTPUTS
3 V
High-Level
Timing
Input
1.5 V
1.5 V
1.5 V
1.5 V
Pulse
0 V
t
t
h
w
t
su
3 V
0 V
Low-Level
Pulse
Data
Input
1.5 V
1.5 V
1.5 V
VOLTAGE WAVEFORMS
PULSE DURATIONS
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
3 V
0 V
Output
Control
(low-level
enabling)
1.5 V
1.5 V
3 V
0 V
Input
1.5 V
1.5 V
t
t
PLZ
PZL
t
t
PHL
PLH
Waveform 1
(see Notes C
and D)
≈1.5 V
In-Phase
1.5 V
V
OH
Output
(see Note D)
V
OL
+ 0.5 V
1.5 V
1.5 V
1.5 V
V
OL
V
OL
t
t
PZH
PHZ
t
t
PLH
PHL
V
OH
Waveform 2
(see Notes C
and D)
V
OH
− 0.5 V
Out-of-Phase
Output
(see Note D)
V
V
OH
1.5 V
1.5 V
≈1.5 V
OL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS
NOTES: A.
C
includes probe and jig capacitance.
L
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 t
, t
, t
, and t
; S1 is open, and S2 is closed for t
PZH
; S1 is closed, and S2 is open for t
.
PLH PHL PHZ
PLZ
PZL
E. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, Z ≈ 50 Ω; t and t ≤ 7 ns for Series
O
r
f
54/74 devices and t and t ≤ 2.5 ns for Series 54S/74S devices.
r
f
F. The outputs are measured one at a time, with one input transition per measurement.
Figure 1. Load Circuits and Voltage Waveforms
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
