參數(shù)資料
型號(hào): SN74LS374DW
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: >6V Fixed Gain, Enhanced Gain 10 dBm Amplifier
中文描述: LS SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20
封裝: SOIC-20
文件頁數(shù): 4/8頁
文件大?。?/td> 154K
代理商: SN74LS374DW
SN74LS373 SN74LS374
http://onsemi.com
4
AC CHARACTERISTICS
(T
A
= 25
°
C, V
CC
= 5.0 V)
Limits
LS373
LS374
Symbol
Parameter
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
f
MAX
Maximum Clock Frequency
35
50
MHz
t
PLH
t
PHL
Propagation Delay,
Data to Output
12
12
18
18
ns
C = 45 pF,
R
L
= 667
t
PLH
t
PHL
Clock or Enable
to Output
20
18
30
30
15
19
28
28
ns
t
PZH
t
PZL
Output Enable Time
15
25
28
36
20
21
28
28
ns
t
PHZ
t
PLZ
Output Disable Time
12
15
20
25
12
15
20
25
ns
C
L
= 5.0 pF
AC SETUP REQUIREMENTS
(T
A
= 25
°
C, V
CC
= 5.0 V)
Limits
LS373
LS374
Symbol
Parameter
Min
Max
Min
Max
Unit
t
W
Clock Pulse Width
15
15
ns
t
s
Setup Time
5.0
20
ns
t
h
Hold Time
20
0
ns
DEFINITION OF TERMS
SETUP TIME (t
s
) — is defined as the minimum time
required for the correct logic level to be present at the logic
input prior to LE transition from HIGH-to-LOW in order to
be recognized and transferred to the outputs.
HOLD TIME (t
h
) — is defined as the minimum time
following the LE transition from HIGH-to-LOW that the
logic level must be maintained at the input in order to ensure
continued recognition.
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