M74HC157 [STMICROELECTRONICS]

HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER; HC158 QUAD 2通道多路复用器INV 。 HC157 QUAD 2通道多路复用器


型号：	M74HC157
厂家：	ST
描述：	HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER HC158 QUAD 2通道多路复用器INV 。 HC157 QUAD 2通道多路复用器复用器
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中文：	中文翻译
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M54HC157/158

M74HC157/158

HC157 QUAD 2 CHANNEL MULTIPLEXER

HC158 QUAD 2 CHANNEL MULTIPLEXER (INV.)

HIGH SPEED

t_PD= 10 ns (TYP.) AT V_CC= 5 V

LOW POWER DISSIPATION

I_CC= 4 µA (MAX.) AT T_A= 25 °C

HIGH NOISE IMMUNITY

V_NIH= V_NIL= 28 % V_CC(MIN.)

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

SYMMETRICAL OUTPUT IMPEDANCE

IOH = I_OL= 4 mA (MIN.)

BALANCED PROPAGATION DELAYS

t_PLH= t_PHL

WIDE OPERATING VOLTAGE RANGE

B1R

(Plastic Package)

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

V_CC(OPR) = 2 V TO 6 V

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS157/158

ORDER CODES :

M54HCXXXF1R

M74HCXXXB1R

M74HCXXXM1R

M74HCXXXC1R

PIN CONNECTIONS (top view)

HC157

DESCRIPTION

The M54/74HC157 and the M54/74HC158 are high

speed CMOS QUAD 2-CHANNEL MULTI-

PLEXER’s fabricated with silicon gate C²MOS tech-

nology. They achieve the high speed operation

similar to equivalent LSTTL while maintaining the

CMOS low power dissipation.

HC158

These devices consist of four 2-input digital multi-

plexers with common select and strobe inputs. The

HC158 is an inverting multiplexer while the HC157

is a non-inverting multiplexer. When the STROBE

input is held High, selection of data is inhibited and

all the outputs become Low in the M74HC157 and

High in the M74HC158. The SELECT decoding

determines whether the A or B inputs get routed to

their corresponding Y outputs. All inputs are

equipped with protection circuits against static dis-

charge and transient excess voltage.

NC =

No Internal

Connection

February 1993

1/11

M54/M74HC157 M54/M74HC158

CHIP CARRIER

HC157

HC158

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION (for HC157)

PIN DESCRIPTION (for HC158)

PIN No

SYMBOL

NAME AND FUNCTION

PIN No

SYMBOL

NAME AND FUNCTION

SELECT

Common Data Select

Input

SELECT

Common Data Select

Input

2, 5, 11, 14

3, 6, 10, 13

1A to 4A

1B to 4B

Data Inputs From

Source A

2, 5, 11, 14

3, 6, 10, 13

1A to 4A

1B to 4B

Data Inputs From

Source A

Data Inputs From

Source B

Data Inputs From

Source B

4, 7, 9, 12

1Y to 4Y

STROBE

GND

Multiplexer Output

Strobe Input

4, 7, 9, 12

1Y to 4Y

STROBE

GND

Multiplexer Output

Strobe Input

Ground (0V)

V_CC

Positive Supply Voltage

V_CC

Positive Supply Voltage

2/11

M54/M74HC157 M54/M74HC158

TRUTH TABLE

INPUTS

OUTPUTS

STROBE

SELECT

Y (HC157)

Y (HC158)

X: DON’T CARE

IEC LOGIC SYMBOL

HC157

HC158

LOGIC DIAGRAM

HC157

HC158

3/11

M54/M74HC157 M54/M74HC158

ABSOLUTE MAXIMUM RATINGS

Symbol

V_CC

V_I

Parameter

Value

-0.5 to +7

-0.5 to V_CC+ 0.5

± 20

Unit

Supply Voltage

DC Input Voltage

DC Output Voltage

V_O

I_IK

DC Input Diode Current

^oC

I_OK

DC Output Diode Current

± 20

I_O

DC Output Source Sink Current Per Output Pin

± 25

I_CCor I_GNDDC V_CCor Ground Current

± 50

P_D

T_stg

T_L

Power Dissipation

500 (*)

Storage Temperature

Lead Temperature (10 sec)

-65 to +150

300

^oC

Absolute MaximumRatingsare those values beyond whichdamage tothe device may occur. Functional operation under these condition isnotimplied.

(*) 500 mW: 65 ^oC derate to 300 mW by 10mW/^oC: 65 ^oC to 85 ^oC

RECOMMENDED OPERATING CONDITIONS

Symbol

V_CC

V_I

Parameter

Value

2 to 6

Unit

Supply Voltage

Input Voltage

Output Voltage

0 to V_CC

V_O

T_op

Operating Temperature: M54HC Series

M74HC Series

-55 to +125

-40 to +85

^oC

t_r, t_f

Input Rise and Fall Time

V_CC= 2 V

V_CC= 4.5 V

V_CC= 6 V

0 to 1000

0 to 500

0 to 400

4/11

M54/M74HC157 M54/M74HC158

DC SPECIFICATIONS

Test Conditions

V_CC

Value

T_A= 25 ^oC

54HC and 74HC

Min. Typ. Max. Min. Max. Min. Max.

-40 to 85 ^oC -55 to 125 ^oC

Symbol

Parameter

Unit

74HC

54HC

(V)

V_IH

High Level Input

Voltage

2.0

4.5

6.0

2.0

4.5

6.0

2.0

4.5

6.0

4.5

6.0

1.5

3.15

4.2

1.5

3.15

4.2

1.5

3.15

4.2

V_IL

Low Level Input

Voltage

0.5

1.35

1.8

0.5

1.35

1.8

0.5

1.35

1.8

V_OH

High Level

Output Voltage

1.9

4.4

5.9

2.0

4.5

6.0

1.9

4.4

1.9

4.4

V_I=

V_IH

I_O=-20 µA

5.9

V_IL

I_O=-4.0 mA 4.18 4.31

4.13

5.63

4.10

5.60

I_O=-5.2 mA 5.68

5.8

0.0

V_OL

Low Level Output 2.0

Voltage

0.1

V_I=

V_IH

I_O= 20 µA

4.5

6.0

4.5

6.0

0.1

V_IL

I_O= 4.0 mA

I_O= 5.2 mA

0.17 0.26

0.18 0.26

±0.1

0.33

±1

0.40

±1

I_I*

I_CC

Input Leakage

6.0

V_I= V_CCor GND

µA

Current

Quiescent Supply 6.0 V_I= V_CCor GND

Current I_O=0

* Applicable only to DIR, G, G input

5/11

M54/M74HC157 M54/M74HC158

AC ELECTRICAL CHARACTERISTICS (C_L= 50 pF, Input t_r= t_f= 6 ns)

Test Conditions

Value

T_A= 25 ^oC

54HC and 74HC

-40 to 85 ^oC -55 to 125 ^oC

Symbol

Parameter

Unit

V_CC

(V)

74HC

54HC

Min. Typ. Max. Min. Max. Min. Max.

t_TLH

t_THL

Output Transition

Time

2.0

4.5

6.0

2.0

4.5

6.0

2.0

4.5

6.0

2.0

4.5

6.0

110

t_PLH

t_PHL

Propagation

Delay Time

(A, B - Y)

100

125

150

t_PLH

t_PHL

Propagation

Delay Time

(SELECT - Y)

125

155

190

t_PLH

t_PHL

Propagation

Delay Time

(STROBE - Y)

115

145

175

C_IN

Input Capacitance

C_PD(*) Power Dissipation

Capacitance

(*) C_PDisdefined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.

(Refer to Test Circuit). Average operting current can be obtained by the followingequation. I_CC(opr) = C_PD• V_CC• f_IN+ I_CC/4 (per channel)

SWITCHING CHARACTERISTICS TEST CIR-

CUIT

TEST CIRCUIT I_CC(Opr.)

INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF

SWITCHINGCHARACTERISTICSTEST.

6/11

M54/M74HC157 M54/M74HC158

Plastic DIP16 (0.25) MECHANICAL DATA

inch

TYP.

DIM.

MIN.

0.51

0.77

TYP.

MAX.

MIN.

0.020

0.030

MAX.

1.65

0.065

0.5

0.020

0.010

0.25

0.787

8.5

2.54

17.78

0.335

0.100

0.700

7.1

5.1

0.280

0.201

3.3

0.130

1.27

0.050

P001C

7/11

M54/M74HC157 M54/M74HC158

Ceramic DIP16/1 MECHANICAL DATA

inch

TYP.

DIM.

MIN.

TYP.

MAX.

MIN.

MAX.

0.787

0.276

3.3

0.130

0.700

0.38

0.015

17.78

2.29

0.4

2.79

0.55

1.52

0.31

1.27

10.3

8.05

5.08

0.090

0.016

0.046

0.009

0.020

0.110

0.022

0.060

0.012

0.050

0.406

0.317

0.200

1.17

0.22

0.51

7.8

0.307

P053D

8/11

M54/M74HC157 M54/M74HC158

SO16 (Narrow) MECHANICAL DATA

inch

TYP.

DIM.

MIN.

TYP.

MAX.

1.75

0.2

MIN.

MAX.

0.068

0.007

0.064

0.018

0.010

0.1

0.004

1.65

0.46

0.25

0.35

0.19

0.013

0.007

0.5

0.019

45° (typ.)

9.8

5.8

0.385

0.228

0.393

0.244

6.2

1.27

8.89

0.050

0.350

3.8

4.6

0.5

4.0

5.3

0.149

0.181

0.019

0.157

0.208

0.050

0.024

1.27

0.62

8° (max.)

P013H

9/11

M54/M74HC157 M54/M74HC158

PLCC20 MECHANICAL DATA

inch

TYP.

DIM.

MIN.

9.78

8.89

4.2

TYP.

MAX.

10.03

9.04

MIN.

0.385

0.350

0.165

MAX.

0.395

0.356

0.180

4.57

2.54

0.56

0.100

0.022

7.37

8.38

0.290

0.330

0.004

1.27

5.08

0.38

0.050

0.200

0.015

0.101

1.27

1.14

0.050

0.045

P027A

10/11

M54/M74HC157 M54/M74HC158

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the

consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No

license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specificationsmentioned

in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.

SGS-THOMSON Microelectronicsproductsare notauthorized foruse ascritical componentsin life support devices or systems without express

written approval of SGS-THOMSON Microelectonics.

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11/11

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