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SN74HCT157N View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
SN74HCT157N QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS Texas-Instruments
Texas Instruments Texas-Instruments
SN74HCT157N Datasheet PDF : 13 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
SN54HCT157, SN74HCT157
QUADRUPLE 2ĆLINE TO 1ĆLINE DATA SELECTORS/MULTIPLEXERS
SCLS071D − NOVEMBER 1988 − REVISED OCTOBER 2003
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 mA
Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±70 mA
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
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.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
SN54HCT157
MIN NOM MAX
SN74HCT157
UNIT
MIN NOM MAX
VCC Supply voltage
4.5
5 5.5 4.5
5 5.5 V
VIH High-level input voltage
VCC = 4.5 V to 5.5 V
2
2
V
VIL
Low-level input voltage
VCC = 4.5 V to 5.5 V
0.8
0.8 V
VI
Input voltage
0
VCC
0
VCC V
VO
Output voltage
0
VCC
0
VCC V
tt
Input transition (rise and fall) time
500
500 ns
TA
Operating free-air temperature
−55
125 −40
85 °C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25°C
SN54HCT157 SN74HCT157
MIN TYP MAX MIN MAX MIN MAX
VOH
VOL
II
ICC
ICC†
Ci
VI = VIH or VIL
IOH = −20 µA
IOH = −6 mA
VI = VIH or VIL
IOL = 20 µA
IOL = 6 mA
VI = VCC or 0
VI = VCC or 0,
IO = 0
One input at 0.5 V or 2.4 V,
Other inputs at 0 or VCC
4.5 V
4.5 V
5.5 V
5.5 V
5.5 V
4.5 V
to 5.5 V
4.4 4.499
3.98 4.3
0.001
0.17
±0.1
0.1
0.26
±100
8
1.4 2.4
3
10
4.4
3.7
0.1
0.4
±1000
160
3
4.4
3.84
0.1
0.33
±1000
80
2.9
10*
10
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC.
UNIT
V
V
nA
µA
mA
pF
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
3
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