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74ABT16500
AC Operating Requirements
Extended AC Electrical Characteristics
Note 10: This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase
(i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.).
Note 11: This specification is guaranteed but not tested. The limits represent propagation delay with 250 pF load capacitors in place of the 50 pF load capac-
itors in the standard AC load. This specification pertains to single output switching only.
Note 12: This specification is guaranteed but not tested. The limits represent propagation delays for all paths described switching in phase
(i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.) with 250 pF load capacitors in place of the 50 pF load capacitors in the standard AC load.
Note 13: 3-STATE delays are dominated by the RC network (500Ω, 250 pF) on the output and have been excluded from the datasheet.
Symbol Parameter
T
A
= +25°CT
A
= −40°C to +85°C
Units
V
CC
= +5V V
CC
= 4.5V–5.5V
C
L
= 50 pF C
L
= 50 pF
Min Max Min Max
t
S
(H) Setup Time, 4.5 4.5 ns
t
S
(L)
A to CLKAB
4.5 4.5
t
H
(H) Hold Time, 0 0 ns
t
H
(L)
A to CLKAB
00
t
S
(H) Setup Time, 4.0 4.0 ns
t
S
(L)
B to CLKBA
4.0 4.0
t
H
(H) Hold Time, 0 0 ns
t
H
(L)
B to CLKBA
00
t
S
(H) Setup Time, A to LEAB 1.5 1.5 ns
t
S
(L)
or B to LEBA, CLK HIGH
1.5 1.5
t
H
(H) Hold Time, A to LEAB 1.5 1.5
ns
t
H
(L)
or B to LEBA, CLK HIGH
1.5 1.5
t
S
(H) Setup Time, A to LEAB 4.5 4.5 ns
t
S
(L)
or B to LEBA, CLK LOW
4.5 4.5
t
H
(H) Hold Time, A to LEAB 1.5 1.5 ns
t
H
(L)
or B to LEBA, CLK LOW
1.5 1.5
t
W
(H) Pulse Width, 3.3 3.3 ns
t
W
(L) LEAB or LEBA, HIGH 3.3 3.3
t
W
(H)
Pulse Width, CLKAB
3.3 3.3
ns
t
W
(L)
or CLKBA, HIGH or LOW
3.3 3.3
Symbol Parameter
T
A
= −40°C to +85°CT
A
= −40°C to +85°CT
A
= −40°C to +85°C
Units
V
CC
= 4.5V–5.5V V
CC
= 4.5V–5.5V V
CC
= 4.5V–5.5V
C
L
= 50 pF C
L
= 250 pF C
L
= 250 pF
18 Outputs Switching 1 Output Switching 18 Outputs Switching
(Note 10) (Note 11) (Note 12)
Min Typ Max Min Max Min Max
t
PLH
Propagation Delay 1.5 6.5 2.0 7.0 2.5 9.9
ns
t
PHL
Data to Outputs 1.5 6.5 2.0 7.0 2.5 9.2
t
PLH
Propagation Delay 1.5 6.0 2.0 7.5 2.5 8.5
ns
t
PHL
LEAB or LEBA to B or A 1.5 6.0 2.0 7.5 2.5 8.5
t
PLH
Propagation Delay 1.5 6.2 2.0 7.7 2.5 8.5
ns
t
PHL
CLKAB or CLKBA to B or A
1.5 6.2 2.0 7.7 2.5 8.5
t
PZH
Output Enable Time 1.5 6.5 2.0 7.0 2.5 8.5
ns
t
PZL
1.5 6.5 2.5 7.0 2.5 8.5
t
PHZ
Output Disable 1.5 6.5 (Note 13) (Note 13)
ns
t
PLZ
Time 1.5 6.5
