Datasheet MC74LCX157ML1, MC74LCX157M, MC74LCX157MEL, MC74LCX157DR2, MC74LCX157DTR2 Datasheet (MOTOROLA)



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.

MC74LCX157

MOTOROLA LCX DATA

BR1339 — REV 3

4

DC ELECTRICAL CHARACTERISTICS (continued)

TA = –40°C to +85°C

Symbol Characteristic Condition Min Max Unit

I

I

Input Leakage Current 2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V ±5.0 µA

I

CC

Quiescent Supply Current

2.7 ≤ VCC ≤ 3.6V; VI = GND or V

CC

10 µA

2.7 ≤ VCC ≤ 3.6V; 3.6 ≤ VI ≤ 5.5V ±10 µA

∆I

CC

Increase in ICC per Input 2.7 ≤ VCC ≤ 3.6V; VIH = VCC – 0.6V 500 µA

AC CHARACTERISTICS (tR = tF = 2.5ns; CL = 50pF; RL = 500Ω)

Limits

TA = –40°C to +85°C

VCC = 3.0V to 3.6V VCC = 2.7V

Symbol Parameter Waveform Min Max Max Unit

t

PLH

t

PHL

Propagation Delay
In to Zn

1 1.5

1.5

5.8

5.8

6.3

6.3

ns

t

PLH

t

PHL

Propagation Delay
S to Zn

1,2 1.5

1.5

7.0

7.0

8.0

8.0

ns

t

PLH

t

PHL

Propagation Delay
E

to Zn

2 1.5

1.5

7.0

7.0

8.0

8.0

ns

t

OSHL

t

OSLH

Output–to–Output Skew
(Note 3.)

1.0

1.0

ns

3. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH–to–LOW (t

OSHL

) or LOW–to–HIGH (t

OSLH

); parameter

guaranteed by design.

DYNAMIC SWITCHING CHARACTERISTICS

TA = +25°C

Symbol Characteristic Condition Min Typ Max Unit

V

OLP

Dynamic LOW Peak Voltage (Note 4.) VCC = 3.3V , CL = 50pF, VIH = 3.3V , VIL = 0V 0.8 V

V

OLV

Dynamic LOW Valley Voltage (Note 4.) VCC = 3.3V , CL = 50pF, VIH = 3.3V , VIL = 0V 0.8 V

4. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is
measured in the LOW state.

CAPACITIVE CHARACTERISTICS

Symbol Parameter Condition Typical Unit

C

IN

Input Capacitance VCC = 3.3V , VI = 0V or V

CC

7 pF

C

OUT

Output Capacitance VCC = 3.3V , VI = 0V or V

CC

8 pF

C

PD

Power Dissipation Capacitance 10MHz, VCC = 3.3V , VI = 0V or V

CC

25 pF

MC74LCX157

LCX DATA
BR1339 — REV 3

5 MOTOROLA

WAVEFORM 1 – NON–INVERTING PROPAGATION DELAYS

tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns

2.7V

0V

V

OH

V

OL

In, S

Zn

t

PLH

t

PHL

1.5V1.5V

1.5V 1.5V

Figure 3. AC Waveforms

WAVEFORM 2 – INVERTING PROPAGATION DELAYS

tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns

2.7V

0V

V

OH

V

OL

E

, S

Zn

t

PLH

t

PHL

1.5V1.5V

1.5V 1.5V

PULSE

GENERATOR

R

T

DUT

V

CC

R

L

C

L

CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500Ω or equivalent
RT = Z

OUT

of pulse generator (typically 50Ω)

Figure 4. Test Circuit

MC74LCX157

MOTOROLA LCX DATA

BR1339 — REV 3

6

OUTLINE DIMENSIONS

M SUFFIX

PLASTIC SOIC EIAJ PACKAGE

CASE 966–01

ISSUE O

D SUFFIX

PLASTIC SOIC PACKAGE

CASE 751B–05

ISSUE J

0.25 (0.010) T B A

M

S S

MIN MINMAX MAX

MILLIMETERS INCHES

DIM

A
B
C
D
F
G
J
K
M
P
R

9.80

3.80

1.35

0.35

0.40

0.19

0.10
0

°

5.80

0.25

10.00

4.00

1.75

0.49

1.25

0.25

0.25
7

°

6.20

0.50

0.386

0.150

0.054

0.014

0.016

0.008

0.004
0

°

0.229

0.010

0.393

0.157

0.068

0.019

0.049

0.009

0.009
7

°

0.244

0.019

1.27 BSC 0.050 BSC

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.

1

8

916

–A

–

–B

–

D

16 PL

K

C

G

–T

–

SEATING

PLANE

R X 45°

M

J

F

P 8 PL

0.25 (0.010) B

M M

Z

D

HEE

1

16 9

8

b

A

1

A

e

L

DIM MIN MAX MIN MAX

INCHES

--- 2.05 --- 0.081

MILLIMETERS

0.05 0.20 0.002 0.008

0.35 0.50 0.014 0.020

0.18 0.27 0.007 0.011

9.90 10.50 0.390 0.413

5.10 5.45 0.201 0.215

1.27 BSC 0.050 BSC

7.40 8.20 0.291 0.323

0.50 0.85 0.020 0.033

1.10 1.50 0.043 0.059
0

0.70 0.90 0.028 0.035

--- 0.78 --- 0.031

A

1

A

b
c
D
E
e

L

M

Z

H

E

Q

1

L

E

_

10

_

0

_

10

_

L

E

Q

1

c

M

_

VIEW P

DETAIL P

NOTES:

1 DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.
2 CONTROLLING DIMENSION: MILLIMETER.
3 DIMENSIONS D AND E DO NOT INCLUDE MOLD

FLASH OR PROTRUSIONS AND ARE MEASURED

AT THE PARTING LINE. MOLD FLASH OR

PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)

PER SIDE.
4 TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.
5 THE LEAD WIDTH DIMENSION (b) DOES NOT

INCLUDE DAMBAR PROTRUSION. ALLOWABLE

DAMBAR PROTRUSION SHALL BE 0.08 (0.003)

TOTAL IN EXCESS OF THE LEAD WIDTH

DIMENSION AT MAXIMUM MA TERIAL CONDITION.

DAMBAR CANNOT BE LOCATED ON THE LOWER

RADIUS OR THE FOOT. MINIMUM SPACE

BETWEEN PROTRUSIONS AND ADJACENT LEAD

TO BE 0.46 ( 0.018).

0.13 (0.005)

M

0.10 (0.004)

MC74LCX157

LCX DATA
BR1339 — REV 3

7 MOTOROLA

OUTLINE DIMENSIONS

SD SUFFIX

PLASTIC SSOP PACKAGE

CASE 940B–03

ISSUE B

16 9

81

K16X REF

S

U

M

0.12 (0.005) V

S

T

A

B

L

L/2

PIN 1
IDENT

S

U

M

0.20 (0.008) T

–V–

–U–

H

D

C

0.076 (0.003)

G

–T–

SEATING
PLANE

F

M

DETAIL E

DETAIL E

–W–

N

N

0.25 (0.010)

K

J

J1

K1

SECTION N–N

DIMAMIN MAX MIN MAX

INCHES

6.07 6.33 0.238 0.249

MILLIMETERS

B 5.20 5.38 0.205 0.212
C 1.73 1.99 0.068 0.078
D 0.05 0.21 0.002 0.008
F 0.63 0.95 0.024 0.037

G 0.65 BSC 0.026 BSC

H 0.73 0.90 0.028 0.035
J 0.09 0.20 0.003 0.008

J1 0.09 0.16 0.003 0.006

K 0.25 0.38 0.010 0.015

K1 0.25 0.33 0.010 0.013

____

NOTES:

6 DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.
7 CONTROLLING DIMENSION: MILLIMETER.
8 DIMENSION A DOES NOT INCLUDE MOLD FLASH,

PROTRUSIONS OR GATE BURRS. MOLD FLASH

OR GATE BURRS SHALL NOT EXCEED 0.15

(0.006) PER SIDE.
9 DIMENSION B DOES NOT INCLUDE INTERLEAD

FLASH OR PROTRUSION. INTERLEAD FLASH OR

PROTRUSION SHALL NOT EXCEED 0.15 (0.006)

PER SIDE.

10 DIMENSION K DOES NOT INCLUDE DAMBAR

PROTRUSION/INTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN

EXCESS OF K DIMENSION AT MAXIMUM

MATERIAL CONDITION. DAMBAR INTRUSION

SHALL NOT REDUCE DIMENSION K BY MORE

THAN 0.07 (0.002) AT LEAST MATERIAL

CONDITION.

11 TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

12 DIMENSION A AND B ARE TO BE DETERMINED

AT DATUM PLANE –W–.

L 7.65 7.90 0.301 0.311

M 0 8 0 8

MC74LCX157

MOTOROLA LCX DATA

BR1339 — REV 3

8

OUTLINE DIMENSIONS

DT SUFFIX

PLASTIC TSSOP PACKAGE

CASE 948F–01

ISSUE O

DIM MIN MAX MIN MAX

INCHESMILLIMETERS

A 4.90 5.10 0.193 0.200
B 4.30 4.50 0.169 0.177
C ––– 1.20 ––– 0.047
D 0.05 0.15 0.002 0.006
F 0.50 0.75 0.020 0.030
G 0.65 BSC 0.026 BSC
H 0.18 0.28 0.007 0.011

J 0.09 0.20 0.004 0.008

J1 0.09 0.16 0.004 0.006

K 0.19 0.30 0.007 0.012

K1 0.19 0.25 0.007 0.010

L 6.40 BSC 0.252 BSC
M 0 8 0 8

NOTES:

1 DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.
2 CONTROLLING DIMENSION: MILLIMETER.
3 DIMENSION A DOES NOT INCLUDE MOLD FLASH.

PROTRUSIONS OR GATE BURRS. MOLD FLASH

OR GATE BURRS SHALL NOT EXCEED 0.15

(0.006) PER SIDE.
4 DIMENSION B DOES NOT INCLUDE INTERLEAD

FLASH OR PROTRUSION. INTERLEAD FLASH OR

PROTRUSION SHALL NOT EXCEED

0.25 (0.010) PER SIDE.

5 DIMENSION K DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN

EXCESS OF THE K DIMENSION AT MAXIMUM

MATERIAL CONDITION.
6 TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.
7 DIMENSION A AND B ARE TO BE DETERMINED

AT DATUM PLANE –W–.

____

SECTION N–N

SEATING
PLANE

IDENT.

PIN 1

1

8

16

9

DETAIL E

J

J1

B

C

D

A

K

K1

H

G

DETAIL E

F

M

L

2X L/2

–U–

S

U0.15 (0.006) T

S

U0.15 (0.006) T

S

U

M

0.10 (0.004) V

S

T

0.10 (0.004)

–T–

–V–

–W–

0.25 (0.010)

16X REFK

N

N

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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
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arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
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Opportunity/Affirmative Action Employer.

Mfax is a trademark of Motorola, Inc.

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MC74LCX157/D

◊