Datasheet MC74LCX257M, MC74LCX257DT, MC74LCX257DTR2, MC74LCX257D, MC74LCX257DR2 Datasheet (Motorola)



SEMICONDUCTOR TECHNICAL DATA

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%% !  '#% 

The MC74LCX257 is a high performance, quad 2–input multiplexer
with 3–state outputs 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 VI specification of 5.5V allows MC74LCX257 inputs to be
safely driven from 5V devices.

Four bits of data from two sources can be selected using the Select
input. The four outputs present the selected data in the true
(non–inverted) form. The outputs may be switched to a high impedance
state by placing a logic HIGH on the Output Enable (OE
drive capability is 24mA at the outputs.

) input. Current



LOW–VOLTAGE CMOS

QUAD 2–INPUT MULTIPLEXER

D SUFFIX

16

1

PLASTIC SOIC
CASE 751B–05

• Designed for 2.7 to 3.6V V

Operation

CC

• 5V Tolerant — Interface Capability With 5V TTL Logic

• Supports Live Insertion and Withdrawal

• I

Specification Guarantees High Impedance When VCC = 0V

OFF

• LVTTL Compatible

• LVCMOS Compatible

• 24mA Balanced Output Sink and Source Capability

• Near Zero Static Supply Current in All Three Logic States (10µA)

Substantially Reduces System Power Requirements

• Latchup Performance Exceeds 500mA

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

Pinout: 16–Lead Plastic Package

(Top View)

V

CC

S I0a I1a Za I0b I1b Zb GND

I0c I1c Zc I0d I1d Zd

OE

1516 14 13 12 11 10

21 34567

9

8

16

16

16

PIN NAMES

Pins

I0n
I1n
OE
S
Zn

PLASTIC SOIC EIAJ

1

PLASTIC SSOP

1

PLASTIC TSSOP

1

Function

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

M SUFFIX

CASE 966–01

SD SUFFIX

CASE 940B–03

DT SUFFIX

CASE 948F–01

This document contains information on a product under development. Motorola reserves the right to
change or discontinue this product without notice.

11/96

 Motorola, Inc. 1996

1

REV 0.2

MC74LCX257

LOGIC DIAGRAM

I0a
I1a

I0b
I1b

I0c
I1c

I0d
I1d

OE

2
3

5
6

14
13

11
10

15

1

S

4

Za

7

Zb

12

Zc

9

Zd

TRUTH TABLE

Inputs Outputs

OE S I0n I1n Zn

H

L
L
L
L

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

X
H
H
L
L

X
X
X
L
H

X
L

H

X
X

Z
L
H
L
H

MOTOROLA LCX DATA

2

BR1339 — REV 3

MC74LCX257

ABSOLUTE MAXIMUM RATINGS*

Symbol Parameter Value Condition Unit

V

CC

V

I

V

O

I

IK

I

OK

I

O

I

CC

I

GND

T

STG

* 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

V

I

V

O

I

OH

I

OL

I

OH

I

OL

T

A

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

DC Supply Voltage –0.5 to +7.0 V
DC Input Voltage –0.5 ≤ VI ≤ +7.0 V
DC Output Voltage –0.5 ≤ VO ≤ +7.0 Output in 3–State V

–0.5 ≤ VO ≤ VCC + 0.5 Note 1. V
DC Input Diode Current –50 VI < GND mA
DC Output Diode Current –50 VO < GND mA

+50 VO > V
DC Output Source/Sink Current ±50 mA
DC Supply Current Per Supply Pin ±100 mA
DC Ground Current Per Ground Pin ±100 mA
Storage Temperature Range –65 to +150 °C

Supply Voltage Operating

Data Retention Only
Input Voltage 0 5.5 V
Output Voltage (HIGH or LOW State)

(3–State)
HIGH Level Output Current, VCC = 3.0V – 3.6V –24 mA
LOW Level Output Current, VCC = 3.0V – 3.6V 24 mA
HIGH Level Output Current, VCC = 2.7V – 3.0V –12 mA
LOW Level Output Current, VCC = 2.7V – 3.0V 12 mA
Operating Free–Air Temperature –40 +85 °C

VCC = 3.0V

2.0

1.5

0
0

0 10 ns/V

3.3

3.3

CC

V

3.6

3.6

CC

5.5

mA

V

V

DC ELECTRICAL CHARACTERISTICS

TA = –40°C to +85°C

Symbol Characteristic Condition Min Max Unit

V

IH

V

IL

V

OH

V

OL

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

LCX DATA
BR1339 — REV 3

HIGH Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 2.0 V
LOW Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 0.8 V
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

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

3 MOTOROLA

MC74LCX257

DC ELECTRICAL CHARACTERISTICS (continued)

TA = –40°C to +85°C

Symbol Characteristic Condition Min Max Unit

I

I

I

OZ

I

OFF

I

CC

∆I

CC

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

Symbol Parameter Waveform Min Max Max Unit

t

PLH

t

PHL

t

PLH

t

PHL

t

PZH

t

PZL

t

PHZ

t

PLZ

t

OSHL

t

OSLH

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
guaranteed by design.

Input Leakage Current 2.7V ≤ VCC ≤ 3.6V; 0V ≤ VI ≤ 5.5V ±5.0 µA
3–State Output Current 2.7 ≤ VCC ≤ 3.6V; 0V ≤ VO ≤ 5.5V;

Power–Off Leakage Current VCC = 0V; VI or VO = 5.5V 10 µA
Quiescent Supply Current

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

Propagation Delay
In to Zn

Propagation Delay
S to Zn

Output Enable Time to HIGH and LOW Level 3 1.5

Output Disable Time from HIGH and LOW
Level

Output–to–Output Skew
(Note 3.)

2.7 ≤ VCC ≤ 3.6V; VI = GND or V

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

VI = VIH or V

VCC = 3.0V to 3.6V VCC = 2.7V

1 1.5

1.5

1,2 1.5

1.5

1.5

3 1.5

1.5

IL

CC

TA = –40°C to +85°C

6.0

6.0

7.0

7.0

7.0

7.0

5.5

5.5

1.0

1.0

) or LOW–to–HIGH (t

OSHL

Limits

±5.0 µA

10 µA

6.5

6.5

8.5

8.5

8.5

8.5

6.0

6.0

OSLH

ns

ns

ns

ns

ns

); parameter

DYNAMIC SWITCHING CHARACTERISTICS

TA = +25°C

Symbol Characteristic Condition Min Typ Max Unit

V

OLP

V

OLV

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.

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

CAPACITIVE CHARACTERISTICS

Symbol Parameter Condition Typical Unit

C

IN

C

OUT

C

PD

MOTOROLA LCX DATA

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

4

CC
CC

CC

7 pF
8 pF

25 pF

BR1339 — REV 3

MC74LCX257

In, S

Zn

1.5V1.5V

t

PLH

1.5V 1.5V

WAVEFORM 1 – NON–INVERTING PROPAGATION DELAYS

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

OE

t

PZH

Zn

t

Zn

t

PHL

1.5V

PZL

WAVEFORM 3 – OUTPUT ENABLE AND DISABLE TIMES

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

1.5V

1.5V

2.7V

0V

V

OH

V

OL

t

PHZ

t

PLZ

Zn

S

t

PLH

1.5V 1.5V

WAVEFORM 2 – INVERTING PROPAGATION DELAYS

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

2.7V

1.5V
0V

V

CC

VOH – 0.3V

≈

0V

≈

3.0V

VOL + 0.3V
GND

2.7V

1.5V1.5V
0V

t

PHL

V

OH

V

OL

PULSE

GENERATOR

Figure 1. AC Waveforms

V

CC

DUT

R

T

TEST SWITCH

t

, t

PLH

PHL

t

, t

PZL

PLZ

Open Collector/Drain t
t

, t

PZH

PHZ

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

of pulse generator (typically 50Ω)

OUT

PLH

and t

PHL

C

L

Open

GND

Figure 2. T est Circuit

R

6V
6V

6V

R

1

L

OPEN
GND

LCX DATA
BR1339 — REV 3

5 MOTOROLA

MC74LCX257

1

–T

SEATING

–

PLANE

–A

–

G

D

16 PL

0.25 (0.010) T B A

OUTLINE DIMENSIONS

D SUFFIX

PLASTIC SOIC PACKAGE

CASE 751B–05

ISSUE J

916

–B

P 8 PL

–

8

0.25 (0.010) B

K

M M

R X 45°

F

C

M

M

S S

J

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.

MILLIMETERS INCHES

MIN MINMAX MAX

DIM

A

9.80

B

3.80

C

1.35

D

0.35

F

0.40

1.27 BSC 0.050 BSC

G
J

0.19

K

0.10

M

0

°

P

5.80

R

0.25

10.00

4.00

1.75

0.49

1.25

0.25

0.25
7

6.20

0.50

0.386

0.393

0.150

0.157

0.054

0.068

0.014

0.019

0.016

0.049

0.008

0.009

0.004

0.009

0

7

°

°

°

0.229

0.010

0.244

0.019

16 9

1

Z

D

e

b

0.13 (0.005)

M

8

A

A

0.10 (0.004)

PLASTIC SOIC EIAJ PACKAGE

M SUFFIX

CASE 966–01

ISSUE O

L

E

Q

1

HEE

_

M

L

DETAIL P

VIEW P

c

1

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 MATERIAL 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).

MILLIMETERS
DIM MIN MAX MIN MAX
A

--- 2.05 --- 0.081

A

0.05 0.20 0.002 0.008

1

b

0.35 0.50 0.014 0.020

c

0.18 0.27 0.007 0.011

D

9.90 10.50 0.390 0.413

E

5.10 5.45 0.201 0.215

e

1.27 BSC 0.050 BSC

H

7.40 8.20 0.291 0.323

E

L

0.50 0.85 0.020 0.033

L

1.10 1.50 0.043 0.059

E

M

0

_

Q

0.70 0.90 0.028 0.035

1

Z

--- 0.78 --- 0.031

10

_

INCHES

0

_

10

_

MOTOROLA LCX DATA

6

BR1339 — REV 3

OUTLINE DIMENSIONS

SD SUFFIX

PLASTIC SSOP PACKAGE

CASE 940B–03

ISSUE B

MC74LCX257

0.076 (0.003)

SEATING

–T–

PLANE

L/2

L

PIN 1
IDENT

0.20 (0.008) T

C

D

K16X REF

0.12 (0.005) V

16 9

A

–V–

M

S

U

G

H

M

S

U

T

S

0.25 (0.010)

N

M

B

N

F

81

–U–

J

DETAIL E

K

J1

K1

SECTION N–N

–W–

DETAIL E

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–.

MILLIMETERS

DIMAMIN MAX MIN MAX

6.07 6.33 0.238 0.249

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

L 7.65 7.90 0.301 0.311

M 0 8 0 8

____

INCHES

LCX DATA
BR1339 — REV 3

7 MOTOROLA

MC74LCX257

OUTLINE DIMENSIONS

0.10 (0.004)

SEATING

–T–

PLANE

L

U0.15 (0.006) T

PIN 1
IDENT.

U0.15 (0.006) T

D

S

2X L/2

S

PLASTIC TSSOP PACKAGE

DT SUFFIX

CASE 948F–01

ISSUE O

16X REFK

0.10 (0.004) V

M

S

U

T

S

K

K1

16

9

J1

B

–U–

1

8

J

N

A

SECTION N–N

0.25 (0.010)

M

–V–

N

F

DETAIL E

C

DETAIL E

H

G

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–.

DIM MIN MAX MIN MAX

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

–W–

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

____

INCHESMILLIMETERS

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
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
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
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
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.

How to reach us:

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INTERNET: http://Design–NET .com 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298

MOTOROLA LCX DATA

8

◊

MC74LCX257/D

BR1339 — REV 3