參數資料
型號: MC74ACT256N
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: DUAL 4-BIT ADDRESSABLE LATCH
中文描述: ACT SERIES, LOW LEVEL TRIGGERED D LATCH, TRUE OUTPUT, PDIP16
封裝: 648-08
文件頁數: 4/7頁
文件大?。?/td> 232K
代理商: MC74ACT256N
MC74AC256 MC74ACT256
5-4
FACT DATA
AC CHARACTERISTICS
(For Figures and Waveforms — See Section 3)
Symbol
Parameter
(V)
74AC
74AC
Unit
No.
VCC*
TA = +25
°
C
CL = 50 pF
TA = –40
°
C
to +85
°
C
CL = 50 pF
Fig.
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
Dn to Qn
Propagation Delay
Dn to Qn
Propagation Delay
E to Qn
Propagation Delay
E to Qn
Propagation Delay
Address to Qn
Propagation Delay
Address to Qn
Propagation Delay
MR to Q
3.3
5.0
2.0
2.0
9.0
6.5
14.5
10.0
1.5
1.5
17.0
11.5
ns
3-5
tPHL
3.3
5.0
2.0
2.0
9.0
6.0
13.5
9.5
1.5
1.5
16.0
11.0
ns
3-5
tPLH
3.3
5.0
2.0
2.0
10.5
7.0
15.0
10.5
1.5
1.5
17.5
12.5
ns
3-6
tPHL
3.3
5.0
2.0
2.0
8.0
7.5
12.5
9.0
1.5
1.5
15.0
11.0
ns
3-6
tPLH
3.3
5.0
2.0
2.0
12.0
8.0
19.0
13.0
1.5
1.5
22.5
15.5
ns
3-6
tPHL
3.3
5.0
2.0
2.0
10.0
7.0
16.0
11.0
1.5
1.5
19.0
13.0
ns
3-6
tPHL
3.3
5.0
2.0
2.0
8.0
6.0
12.0
9.0
1.5
1.5
13.5
10.0
ns
3-7
* Voltage Range 3.3 V is 3.3 V
±
0.3 V.
Voltage Range 5.0 V is 5.0 V
±
0.5 V.
AC OPERATING REQUIREMENTS
Symbol
Parameter
(V)
74AC
74AC
Unit
No.
VCC*
TA = +25
°
C
CL = 50 pF
TA = –40
°
C
to +85
°
C
CL = 50 pF
Fig.
Typ
Guaranteed Minimum
ts
Setup Time, HIGH or LOW
Dn to E
Hold Time, HIGH or LOW
Dn to E
Setup Time
Address to E
3.3
5.0
3.5
2.5
4.5
3.5
ns
3-9
th
3.3
5.0
2.5
2.0
2.5
2.0
ns
3-9
ts
3.3
5.0
7.0
4.0
9.0
6.0
ns
3-6
th
Hold Time
Address to E
3.3
5.0
2.0
2.0
2.0
2.0
ns
3-6
* Voltage Range 3.3 V is 3.3 V
±
0.3 V.
Voltage Range 5.0 V is 5.0 V
±
0.5 V.
相關PDF資料
PDF描述
MC74AC257D QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
MC74AC257 QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
MC74ACT257 QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
MC74AC257N QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
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