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參數(shù)資料
| 型號(hào)： | SN54AS195 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 4-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTER |
| 中文描述： | 4位雙向通用移位寄存器 |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大小： | 176K |
| 代理商： | SN54AS195 |
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SDAS138B – DECEMBER 1983 – REVISED JANUARY 1995
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
MIN
NOM
MAX
UNIT
VCC
VIH
VIL
IOH
IOL
fclock
Supply voltage
4.5
5
5.5
V
High-level input voltage
2
V
Low-level input voltage
0.8
V
High-level output current
–2
mA
Low-level output current
20
mA
Clock frequency
0
70
MHz
t
Pulse duration
CLK high
4
ns
w
CLR low
Data before CLK
↑
SH/LD before CLK
↑
CLR high before CLK
↑
Data after CLK
↑
SH/LD after CLK
↑
7.2
3.5
t
su
Setup time
8
ns
6
t
h
Hold time
1
ns
0
TA
Operating free-air temperature
0
70
°
C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
×
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIK
VOH
VOL
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
VCC = 4.5 V,
II = –18 mA
IOH = –2 mA
IOL = 20 mA
–1.2
V
VCC–2
V
0.35
0.5
V
II
SH/LD
VCC= 5 5 V
VCC = 5.5 V,
VI= 7 V
VI = 7 V
0.2
mA
All others
0.1
IIH
SH/LD
VCC= 5 5 V
VI= 2 7 V
VI = 2.7 V
40
A
μ
All others
20
IIL
SH/LD
VCC= 5 5 V
VCC = 5.5 V,
VI= 0 4 V
VI = 0.4 V
–1
mA
All others
–0.5
IO
ICCH
ICCL
All typical values are at VCC = 5 V, TA = 25
°
C.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
VCC = 5.5 V,
VCC = 5.5 V
VCC = 5.5 V
VO = 2.25 V
–30
–112
mA
32
51
mA
36
57
mA
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