MOTOROLA MC74LCX157ML1, MC74LCX157M, MC74LCX157MEL, MC74LCX157DR2, MC74LCX157DTR2 Datasheet

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SEMICONDUCTOR TECHNICAL DATA

1

REV 1

 Motorola, Inc. 1997

3/97

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The MC74LCX157 is a high performance, quad 2–input multiplexer
operating from a 2.7 to 3.6V supply. High impedance TTL compatible
inputs significantly reduce current loading to input drivers while TTL
compatible outputs offer improved switching noise performance. A V

I

specification of 5.5V allows MC74LCX157 inputs to be safely driven from
5V devices.

Four bits of data from two sources can be selected using the Select
and Enable inputs. The four outputs present the selected data in the true
(non–inverted) form. The MC74LCX157 can also be used as a function
generator. Current drive capability is 24mA at the outputs.

• Designed for 2.7 to 3.6V V

CC

Operation

• 5V T olerant Inputs — Interface Capability With 5V TTL Logic

• LVTTL Compatible

• LVCMOS Compatible

• 24mA Balanced Output Sink and Source Capability

• Near Zero Static Supply Current (10µA) Substantially Reduces System

Power Requirements

• Latchup Performance Exceeds 500mA

• ESD Performance: Human Body Model >2000V; Machine Model >200V

1516 14 13 12 11 10

21 34567

V

CC

9

8

E

I0c I1c Zc I0d I1d Zd

S I0a I1a Za I0b I1b Zb GND

Figure 1. 16–Lead Pinout (Top View)

PIN NAMES

Function

Source 0 Data Inputs
Source 1 Data Inputs
Enable Input
Select Input
Outputs

Pins

I0n
I1n
E
S
Zn



LOW–VOLTAGE CMOS

QUAD 2–INPUT MULTIPLEXER

M SUFFIX

16–LEAD PLASTIC SOIC EIAJ PACKAGE

CASE 966–01

D SUFFIX

16–LEAD PLASTIC SOIC PACKAGE

CASE 751B–05

DT SUFFIX

16–LEAD PLASTIC TSSOP PACKAGE

CASE 948F–01

SD SUFFIX

16–LEAD PLASTIC SSOP PACKAGE

CASE 940B–03

MC74LCX157

MOTOROLA LCX DATA

BR1339 — REV 3

2

Za

Figure 2. Logic Diagram

I0a

4

2

E

I1a

3

15

Zb

I0b

7

5

I1b

6

Zc

I0c

12

14

I1c

13

Zd

I0d

9

11

I1d

10

S

1

TRUTH TABLE

Inputs Outputs

E S I0n I1n Zn
H

L
L
L
L

X
H
H
L
L

X
X
X
L
H

X
L
H
X
X

L
L

H

L

H

H = High Voltage Level; L = Low V oltage Level; X = High or Low Voltage Level ; For ICC Reasons DO NOT
FLOAT Inputs

MC74LCX157

LCX DATA
BR1339 — REV 3

3 MOTOROLA

ABSOLUTE MAXIMUM RATINGS*

Symbol Parameter Value Condition Unit

V

CC

DC Supply Voltage –0.5 to +7.0 V

V

I

DC Input Voltage –0.5 ≤ VI ≤ +7.0 V

V

O

DC Output Voltage –0.5 ≤ VO ≤ VCC + 0.5 Note 1. V

I

IK

DC Input Diode Current –50 VI < GND mA

I

OK

DC Output Diode Current –50 VO < GND mA

+50 VO > V

CC

mA

I

O

DC Output Source/Sink Current ±50 mA

I

CC

DC Supply Current Per Supply Pin ±100 mA

I

GND

DC Ground Current Per Ground Pin ±100 mA

T

STG

Storage Temperature Range –65 to +150 °C

* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or

conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is
not implied.

1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Typ Max Unit

V

CC

Supply Voltage Operating

Data Retention Only

2.0

1.5

3.3

3.3

3.6

3.6

V

V

I

Input Voltage 0 5.5 V

V

O

Output Voltage (HIGH or LOW State) 0 V

CC

V

I

OH

HIGH Level Output Current, VCC = 3.0V – 3.6V –24 mA

I

OL

LOW Level Output Current, VCC = 3.0V – 3.6V 24 mA

I

OH

HIGH Level Output Current, VCC = 2.7V – 3.0V –12 mA

I

OL

LOW Level Output Current, VCC = 2.7V – 3.0V 12 mA

T

A

Operating Free–Air Temperature –40 +85 °C

∆t/∆V Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V ,

VCC = 3.0V

0 10 ns/V

DC ELECTRICAL CHARACTERISTICS

TA = –40°C to +85°C

Symbol Characteristic Condition Min Max Unit

V

IH

HIGH Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 2.0 V

V

IL

LOW Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 0.8 V

V

OH

HIGH Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOH = –100µA VCC– 0.2 V

VCC = 2.7V; IOH = –12mA 2.2
VCC = 3.0V; IOH = –18mA 2.4
VCC = 3.0V; IOH = –24mA 2.2

V

OL

LOW Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOL = 100µA 0.2 V

VCC = 2.7V; IOL= 12mA 0.4
VCC = 3.0V; IOL = 16mA 0.4
VCC = 3.0V; IOL = 24mA 0.55

2. These values of VI are used to test DC electrical characteristics only.