74AC11238D Datasheet, PDF (5/9 Pages) Texas Instruments – 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

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54AC11238, 74AC11238
3ĆLINE TO 8ĆLINE DECODERS/DEMULTIPLEXERS
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SCAS039A − APRIL 1988 − REVISED APRIL 1993
switching characteristics over recommended operating free-air temperature range,
V_CC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
TA = 25°C
54AC11238 74AC11238
MIN TYP MAX MIN MAX MIN MAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
A, B, C
G1
G2A, G2B
Any Y
Any Y
Any Y
1.5 8.5 10.6
1.5 9.6 11.9
1.5 8.2 10.3
1.5 9.6 11.7
1.5 9.1 11.2
1.5 10.7 12.9
1.5 12.7
1.5 14.3
1.5 12.3
1.5
14
1.5 13.4
1.5 15.6
1.5 11.7
1.5 13.3
1.5 11.4
1.5
13
1.5 12.5
1.5 14.5
UNIT
ns
ns
ns
switching characteristics over recommended operating free-air temperature range,
V_CC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
TA = 25°C
54AC11238 74AC11238
MIN TYP MAX MIN MAX MIN MAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
A, B, C
G1
G2A, G2B
Any Y
Any Y
Any Y
1.5 5.4 7.3 1.5
9 1.5 8.5
1.5 6.3 8.6 1.5 10.9 1.5 10.2
1.5 5.2 6.9 1.5 8.7 1.5 8.1
1.5 6.5 8.5 1.5 10.6 1.5 9.9
1.5 5.6 7.5 1.5 9.6 1.5 8.9
1.5 7.2 9.3 2.5 11.8 1.5
11
UNIT
ns
ns
ns
operating characteristics, V_CC = 5 V, T_A = 25°C
PARAMETER
Cpd
Power dissipation capacitance
TEST CONDITIONS
CL = 50 pF,
f = 1 MHz
TYP UNIT
44
pF
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
CL = 50 pF
(see Note A)
500 Ω
LOAD CIRCUIT
Input
(see Note B)
tPHL
Output
50%
50%
VCC
0V
tPLH
50% VCC
VOLTAGE WAVEFORMS
VOH
50% VCC
VOL
NOTES: A. CL includes probe and jig capacitance.
B. Input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr = 3 ns, tf = 3 ns.
C. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
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