CD74HCT157E datasheet(1/6 Pages) HARRIS

Nome de Peças	CD74HCT157E

Descrição Electrónicos	High Speed CMOS Logic Quad 2-Input Multiplexers

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Fabricante Electrônico	HARRIS [Harris Corporation]

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SEMICONDUCT OR

1

Features

• Common Select Inputs

• Separate Enable Inputs

• Buffered inputs and Outputs

• Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Wide Operating Temperature Range . . . -55oC to 125oC

• Balanced Propagation Delay and Transition Times

• Signiﬁcant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

- High Noise Immunity: NIL = 30%, NIH = 30%of VCC at

VCC = 5V

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

VIL= 0.8V (Max), VIH = 2V (Min)

- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH

Pinout

CD74HC157, CD74HCT157, CD74HC158, CD74HCT158

(PDIP, SOIC)

TOP VIEW

Description

The Harris CD74HC157, CD74HCT157, CD74HC158 and

CD74HCT158 are quad 2-input multiplexers which select

four bits of data from two sources under the control of a

common Select input (S). The Enable input (E) is active Low.

When (E) is High, all of the outputs in the 158, the inverting

type, (1Y-4Y) are forced High and in the 157, the non-

inverting type, all of the outputs (1Y-4Y) are forced Low,

regardless of all other input conditions.

Moving data from two groups of registers to four common

output busses is a common use of these devices. The state

of the Select input determines the particular register from

which the data comes. They can also be used as function

generators.

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

S

1I0

1I1

1Y

2I0

2I1

GND

2Y

VCC

4I0

4I1

4Y

3I0

3I1

3Y

E

Ordering Information

PART NUMBER

TEMP. RANGE (oC)

PACKAGE

PKG.

NO.

CD74HC157E

-55 to 125

16 Ld PDIP

E16.3

CD74HCT157E

-55 to 125

16 Ld PDIP

E16.3

CD74HC158E

-55 to 125

16 Ld PDIP

E16.3

CD74HCT158E

-55 to 125

16 Ld PDIP

E16.3

CD74HC157M

-55 to 125

16 Ld SOIC

M16.15

CD74HCT157M

-55 to 125

16 Ld SOIC

M16.15

CD74HC158M

-55 to 125

16 Ld SOIC

M16.15

NOTES:

1. When ordering, use the entire part number. Add the sufﬁx 96 to

obtain the variant in the tape and reel.

2. Wafer or die for this part number is available which meets all elec-

trical specifications. Please contact your local sales office or

Harris customer service for ordering information.

September 1997

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

Copyright

File Number

1642.2

CD74HC157, CD74HCT157,

CD74HC158, CD74HCT158

High Speed CMOS Logic

Quad 2-Input Multiplexers

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CD74HCT157E Folha de dados(PDF) 1 Page - Harris Corporation

CD74HCT157E Folha de dados(HTML) 1 Page - Harris Corporation

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