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參數(shù)資料
| 型號： | 74F1604 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Latch |
| 中文描述： | 鎖存 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 92K |
| 代理商： | 74F1604 |
Philips Semiconductors
Product specification
74F1604
Latch
October 4, 1990
5
AC ELECTRICAL CHARACTERISTICS
LIMITS
T
amb
= +25
°
C
V
CC
= +5.0V
C
L
= 50pF, R
L
= 500
MIN
TYP
T
amb
= 0
°
C to +70
°
C
V
CC
= +5.0V
±
10%
C
L
= 50pF, R = 500
MIN
SYMBOL
PARAMETER
TEST
UNIT
CONDITION
MAX
MAX
t
PLH
t
PHL
Propagation delay
SELECT A/B to Qn (non–inverting)
Waveform 2
3.0
3.5
5.5
6.5
8.5
10.0
2.5
3.0
9.0
11.5
ns
t
PLH
t
PHL
t
PLH
t
PHL
Propagation delay
SELECT A/B to Qn (inverting)
Waveform 1
4.0
2.5
7.0
4.5
10.5
7.5
3.5
2.0
12.0
8.0
ns
Propagation delay
LE to Qn
Waveform 3
6.5
6.0
9.5
9.0
13.0
12.5
5.5
5.0
15.0
14.0
ns
t
PLH
t
PHL
Propagation delay
An or Bn to Qn
Waveform 1, 2
4.0
4.0
6.5
7.0
9.5
10.5
3.5
3.5
10.5
12.5
ns
AC SETUP REQUIREMENTS
LIMITS
T
amb
= +25
°
C
V
CC
= +5.0V
C
D
= 50pF, R
L
= 500
MIN
TYP
T
amb
= 0
°
C to +70
°
C
V
CC
= +5.0V
±
10%
C
D
= 50pF, R
L
= 500
MIN
SYMBOL
PARAMETER
TEST
UNIT
CONDITION
MAX
MAX
t
su
(H)
t
su
(L)
Setup time, high or low
An, Bn to LE
Waveform 4
0.0
1.0
0.0
3.5
ns
t
h
(H
)
t
h
(
L
)
t
w
(L)
Hold time, high or low
An, Bn to LE
Waveform 4
1.5
3.0
2.0
3.5
ns
LE Pulse width, low
Waveform 4
6.5
7.5
ns
AC WAVEFORMS
V
M
V
M
V
M
V
M
t
PLH
t
PHL
An, Bn,
SELCET A/B
Qn
SF00557
Waveform 1. Propagation delay for SELECT A/B to output
(A register stored data = low) or An. Bn to output
V
M
V
M
V
M
V
M
t
PLH
t
PHL
An, Bn,
SELCET A/B
Qn
SF00558
Waveform 2. Propagation delay for SELECT A/B to output
(A register stored data = low) or An. Bn to output
t
PHL
LE
V
M
V
M
V
M
V
M
V
M
t
PLH
Qn
SF00559
Waveform 3. Propagation delay for latch enable to output
V
M
V
M
V
M
V
M
V
M
V
M
t
su
(L)
t
h
(L)
t
su
(H)
t
h
(H)
An, Bn
LE
SF00560
Waveform 4. Setup time and hold times and LE pulse width
Note to AC waveforms
For all waveforms, V
= 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
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