參數(shù)資料
型號: 74ABT845PW
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: 8-bit bus interface latch with set and reset 3-State
中文描述: ABT SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO24
封裝: 4.40 MM, PLASTIC, MO-153, SOT-355-1, TSSOP1-24
文件頁數(shù): 5/7頁
文件大小: 78K
代理商: 74ABT845PW
Philips Semiconductors
Product specification
74ABT845
8-bit bus interface latch with set and reset
(3-State)
1995 Sep 06
5
AC CHARACTERISTICS
GND = 0V, t
R
= t
F
= 2.5ns, C
L
= 50pF, R
L
= 500
LIMITS
SYMBOL
PARAMETER
WAVEFORM
T
amb
= +25
o
C
V
CC
= +5.0V
T
amb
= -40 to
+85
o
C
V
CC
= +5.0V
±
0.5V
Min
UNIT
Min
Typ
Max
Max
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
Dn to Qn
1
1.0
2.2
3.9
5.4
5.4
6.8
1.0
2.2
6.2
7.8
ns
Propagation delay
LE to Qn
2
2.0
2.8
5.1
6.4
6.6
7.9
2.0
2.8
7.5
8.9
ns
Propagation delay
PRE to Qn
1
2.2
3.0
4.9
5.3
6.6
6.8
2.2
3.0
7.8
7.4
ns
Propagation delay
MR to Qn
1
2.4
3.1
4.9
5.9
6.4
7.3
2.4
3.1
7.3
8.5
ns
Output enable time
OEn to Qn
4
5
1.0
2.0
3.8
4.7
5.4
6.1
1.0
2.0
6.3
6.7
ns
Output disable time
OEn to Qn
4
5
1.9
2.2
4.6
4.7
6.2
6.4
1.9
2.2
7.2
7.0
ns
AC SETUP REQUIREMENTS
GND = 0V, t
R
= t
F
= 2.5ns, C
L
= 50pF, R
L
= 500
LIMITS
SYMBOL
PARAMETER
WAVEFORM
T
amb
= +25
o
C
V
CC
= +5.0V
Min
T
amb
= -40 to +85
o
C
V
CC
= +5.0V
±
0.5V
Min
UNIT
Typ
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
t
w
(H)
t
w
(L)
t
w
(L)
t
rec
t
rec
Setup time, High or Low
Dn to LE
3
2.8
3.5
1.0
1.4
2.8
3.5
ns
Hold time, High or Low
Dn to LE
3
1.0
1.0
–1.2
–0.6
1.0
1.0
ns
LE pulse width, High
3
3.0
1.5
3.0
ns
PRE pulse width, Low
6
3.5
2.0
3.5
ns
MR pulse width, Low
6
2.8
1.3
2.8
ns
PRE recovery time
6
3.0
1.4
3.0
ns
MR recovery time
6
3.4
1.6
3.4
ns
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