參數(shù)資料
型號(hào): SN54F157AFK
廠商: Texas Instruments, Inc.
英文描述: 8Kx8 Nonvolatile SRAM, 5% Voltage Tolerance 28-DIP MODULE 0 to 70
中文描述: 四2線1線數(shù)據(jù)選擇器/多路復(fù)用器
文件頁(yè)數(shù): 3/5頁(yè)
文件大?。?/td> 72K
代理商: SN54F157AFK
SN54F157A, SN74F157A
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SDFS053A – MARCH 1987 – REVISED OCTOBER 1993
2–3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54F157A
MIN
TYP
SN74F157A
MIN
TYP
UNIT
MAX
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 4.75 V,
VCC = 4.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
II = –18 mA
IOH = – 1 mA
IOH = – 1 mA
IOL = 20 mA
VI = 7 V
VI = 2.7 V
VI = 0.5 V
VO = 0
VI = 4.5 V
–1.2
–1.2
V
VOH
2.5
3.4
2.5
3.4
V
2.7
VOL
II
IIH
IIL
IOS
ICC
0.3
0.5
0.3
0.5
V
0.1
0.1
mA
μ
A
mA
20
20
– 0.6
– 0.6
–60
–150
–60
–150
mA
15
23
15.5
23
mA
All typical values are at VCC = 5 V, TA = 25
°
C.
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
switching characteristics (see Note 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
CL = 50 pF,
RL = 500
,
TA = 25
°
C
F157A
MIN
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500
,
TA = MIN to MAX§
SN54F157A
MIN
MAX
UNIT
SN74F157A
MIN
TYP
MAX
MAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
A/B
Y
3.2
6.6
10
3.2
12
3.2
11
ns
2.2
4.6
7
2.2
9
2.2
8
G
Y
4.2
6.6
9.5
4.2
13
4.2
11
ns
1.7
4.1
6.5
1.7
7.5
1.7
7
A or B
Y
1.7
4.1
6
1.7
7.5
1.7
6.5
ns
1.7
3.6
5.5
1
7.5
1.2
7
§For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 2: Load circuits and voltage waveforms are shown in Section 1.
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