參數(shù)資料
型號： SN74AS157DRE4
廠商： Texas Instruments, Inc.
英文描述： QUADRUPLE 1-OF-2 DATA SELECTORS/MULTIPLEXERS
中文描述： 翻兩番1 - 2數(shù)據(jù)選擇器/多路復用器
文件頁數(shù)： 4/18頁
文件大?。?/td> 556K
代理商： SN74AS157DRE4
SN54ALS157A, SN54ALS158
SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158
QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS
SDAS081C – APRIL 1982 – REVISED DECEMBER 1994
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
Input voltage, V
I
Operating free-air temperature range, T
A
: SN54ALS157A, SN54ALS158
7 V
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55
°
C to 125
°
C
0
°
C to 70
°
C
–65
°
C to 150
°
C
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
SN74ALS157A, SN74ALS158
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54ALS157A
SN54ALS158
SN74ALS157A
SN74ALS158
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.7
0.8
V
High-level output current
–0.4
–0.4
mA
Low-level output current
4
8
mA
°
C
Operating free-air temperature
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS157A
SN54ALS158
TYP
SN74ALS157A
SN74ALS158
TYP
UNIT
MIN
MAX
MIN
MAX
VIK
VOH
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = –18 mA
IOH = –0.4 mA
IOL = 4 mA
IOL = 8 mA
VI = 7 V
VI = 2.7 V
VI = 0.4 V
VO = 2.25 V
–1.2
–1.2
V
VCC –2
VCC –2
V
VOL
VCC= 4 5 V
VCC = 4.5 V
0.25
0.4
0.25
0.4
V
0.35
0.5
II
IIH
IIL
IO§
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
0.1
0.1
mA
μ
A
mA
20
20
–0.1
–0.1
–20
–112
–30
–112
mA
ICC
′
ALS157A
′
ALS158
VCC= 5 5 V
VCC = 5.5 V,
See Note 1
6
5
11
10
6
5
11
10
mA
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.
NOTE 1: ICC is measured with 4.5 V applied to all inputs and all outputs open.
相關PDF資料
PDF描述
SN74AS157DR Quad 2-Input NAND Schmitt Trigger; Package: SOEIAJ-14; No of Pins: 14; Container: Rail; Qty per Container: 50
SN54ALS157AFK QUADRUPLE 1-OF-2 DATA SELECTORS/MULTIPLEXERS
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