Texas Instruments CD74HCT157E, CD74HCT158E, CD74HCT157M96, CD74HCT157M, CD74HC158M Datasheet

1

Data sheet acquired from Harris Semiconductor
SCHS153

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 . . . -55

o

C to 125oC

• Balanced Propagation Delay and Transition Times

• Significant Power Reduction Compared to LSTTL
Logic ICs

• HC Types

- 2V to 6V Operation

- High NoiseImmunity: N

IL

= 30%, NIH= 30%of VCCat

V

CC

= 5V

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

V

IL

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

- CMOS Input Compatibility, I

l

≤ 1µA at VOL, V

OH

Pinout

CD74HC157, CD74HCT157, CD74HC158, CD74HCT158

(PDIP, SOIC)

TOP VIEW

14

15

16

9

13
12
11
10

1
2
3
4
5

7

6

8

S

1I

0

1I

1

1Y

2I

0

2I

1

GND

2Y

V

CC

4I

0

4I

1

4Y
3I

0

3I

1

3Y

E

September 1997

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

© Harris Corporation 1997

File Number 1642.2

CD74HC157, CD74HCT157,

CD74HC158, CD74HCT158

High Speed CMOS Logic

Quad 2-Input Multiplexers

[ /Title
(CD74H
C157,
CD74H
CT157,
CD74H
C158,
CD74H
CT158)
/

Subject
(High
Speed

2

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.

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 ordiefor this partnumberis available whichmeets all elec­trical specifications. Please contact your local sales office or
Harris customer service for ordering information.

CD74HC157, CD74HCT157, CD74HC158, CD74HCT158

3

Functional Diagram

TRUTH TABLE

ENABLE

SELECT

INPUT DATA INPUTS

OUTPUT

157 158

E S I0 I1 Y Y

HXXXLH
LLLXLH
LLHXHL
LHXLLH
LHXHHL

NOTE: H = High Voltage Level, L = Low Voltage Level, X = Don’t Care

2

3

5
6

10

13

14

11

4

7

12

9

4Y

3Y

2Y

1Y

1Y

4Y

3Y

2Y

HC/HCT

157

HC/HCT

158

1I

0

1I

1

2I

0

2I

1

3I

0

3I

1

4I

0

4I

1

S
E

115

CD74HC157, CD74HCT157, CD74HC158, CD74HCT158

4

Absolute Maximum Ratings Thermal Information

DC Supply Voltage, VCC. . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V

DC Input Diode Current, I

IK

For VI < -0.5V or VI > VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . .±20mA

DC Output Diode Current, I

OK

For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA

DC Output Source or Sink Current per Output Pin, I

O

For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA

DC VCC or Ground Current, I

CC orIGND

. . . . . . . . . . . . . . . . . .±50mA

Operating Conditions

Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC

Supply Voltage Range, V

CC

HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V

HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V

DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to V

CC

Input Rise and Fall Time

2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max)

4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max)

6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max)

Thermal Resistance (Typical, Note 3) θJA (oC/W)

PDIP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Maximum Junction Temperature. . . . . . . . . . . . . . . . . . . . . . .150oC

Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC

Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . .300oC

(SOIC - Lead Tips Only)

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTE:

3. θJA is measured with the component mounted on an evaluation PC board in free air.

DC Electrical Specifications

PARAMETER SYMBOL

TEST

CONDITIONS

V

CC

(V)

25

o

C -40oC TO 85oC -55oCTO125oC

UNITSV

I

(V) IO(mA) MIN TYP MAX MIN MAX MIN MAX

HC TYPES

High Level Input
Voltage

V

IH

- - 2 1.5 - - 1.5 - 1.5 - V

4.5 3.15 - - 3.15 - 3.15 - V
6 4.2 - - 4.2 - 4.2 - V

Low Level Input
Voltage

V

IL

- - 2 - - 0.5 - 0.5 - 0.5 V

4.5 - - 1.35 - 1.35 - 1.35 V
6 - - 1.8 - 1.8 - 1.8 V

High Level Output
Voltage
CMOS Loads

V

OH

VIHor VIL-0.02 2 1.9 - - 1.9 - 1.9 - V

-0.02 4.5 4.4 - - 4.4 - 4.4 - V

-0.02 6 5.9 - - 5.9 - 5.9 - V

High Level Output
Voltage
TTL Loads

- - ---- - - - V

-4 4.5 3.98 - - 3.84 - 3.7 - V

-5.2 6 5.48 - - 5.34 - 5.2 - V

Low Level Output
Voltage
CMOS Loads

V

OL

VIHor VIL0.02 2 - - 0.1 - 0.1 - 0.1 V

0.02 4.5 - - 0.1 - 0.1 - 0.1 V

0.02 6 - - 0.1 - 0.1 - 0.1 V

Low Level Output
Voltage
TTL Loads

- - ---- - - - V
4 4.5 - - 0.26 - 0.33 - 0.4 V

5.2 6 - - 0.26 - 0.33 - 0.4 V

Input Leakage
Current

I

I

VCC or

GND

-6--±0.1 - ±1-±1µA

Quiescent Device
Current

I

CC

VCC or

GND

0 6 - - 8 - 80 - 160 µA

CD74HC157, CD74HCT157, CD74HC158, CD74HCT158

5

HCT TYPES

High Level Input
Voltage

V

IH

- - 4.5 to

5.5

2--2- 2 - V

Low Level Input
Voltage

V

IL

- - 4.5 to

5.5

- - 0.8 - 0.8 - 0.8 V

High Level Output
Voltage
CMOS Loads

V

OH

VIHor VIL-0.02 4.5 4.4 - - 4.4 - 4.4 - V

High Level Output
Voltage
TTL Loads

-4 4.5 3.98 - - 3.84 - 3.7 - V

Low Level Output
Voltage
CMOS Loads

V

OL

VIHor VIL0.02 4.5 - - 0.1 - 0.1 - 0.1 V

Low Level Output
Voltage
TTL Loads

4 4.5 - - 0.26 - 0.33 - 0.4 V

Input Leakage
Current

I

I

VCCand

GND

0 5.5 - ±0.1 - ±1-±1µA

Quiescent Device
Current

I

CC

VCC or

GND

0 5.5 - - 8 - 80 - 160 µA

Additional Quiescent
Device Current Per
Input Pin: 1 Unit Load

∆I

CC

V

CC

-2.1

- 4.5 to

5.5

- 100 360 - 450 - 490 µA

NOTE: For dual-supply systems theoretical worst case (V

I

= 2.4V, VCC = 5.5V) specification is 1.8mA.

DC Electrical Specifications (Continued)

PARAMETER SYMBOL

TEST

CONDITIONS

V

CC

(V)

25

o

C -40oC TO 85oC -55oCTO125oC

UNITSV

I

(V) IO(mA) MIN TYP MAX MIN MAX MIN MAX

HCT Input Loading Table

INPUT

UNIT LOADS

HCT157 HCT158

I (All) 0.95 0.4

E 0.6 0.6
S 3 2.8

NOTE: Unit Load is ∆I

CC

limit specified in DC Electrical Table,e.g.,

360µA max at 25oC.

Switching Specifications Input t

r

, tf = 6ns

PARAMETER SYMBOL

TEST

CONDITIONS

V

CC

(V)

25oC -40oC TO 85oC -55oC TO 125oC

UNITSMIN TYP MAX MIN MAX MIN MAX

HC/HCT157 TYPES

Propagation Delay (Figure 1) t

PLH,tPHLCL

= 50pF 2 - - 125 - 155 - 190 ns

Data to Output 4.5 - - 25 - 31 - 38 ns

HC157 CL=15pF 5 - 10 - - - - - ns

HCT157 - 12 - - - - - ns

CL= 50pF 6 - - 21 - 26 - 32 ns

CD74HC157, CD74HCT157, CD74HC158, CD74HCT158

6

Enable to Output t

PLH,tPHLCL

= 50pF 2 - - 135 - 170 - 205 ns

4.5 - - 27 - 34 - 41 ns

HC157 CL=15pF 5 - 11 - - - - - ns

HCT157 - 12 - - - - - ns

CL= 50pF 6 - - 23 - 29 - 35 ns

Select to Output t

PLH,tPHLCL

= 50pF 2 - - 145 - 180 - 220 ns

4.5 - - 29 - 36 - 44 ns

HC157 CL=15pF 5 - 12 - - - - - ns

HCT157 - 15 - - - - - ns

CL= 50pF 6 - - 25 - 31 - 38 ns

Power Dissipation
Capacitance (Notes 4, 5)

C

PD

-5

HC157 - 62 - - - - - pF

HCT157 - 70 - - - - - pF

HC/HCT158 TYPES

Data to Output t

PLH,tPHLCL

= 50pF 2 - - 140 - 175 - 210 ns

4.5 - - 28 - 35 - 42

HC158 CL=15pF 5 - 11 - - - - - ns

HCT 158 - 13 - - - - - ns

CL= 50pF 6 - - 24 - 30 - 36 ns

Enable to Output t

PLH,tPHLCL

= 50pF 2 - - 160 - 200 - 240 ns

4.5 - - 32 - 40 - 48 ns

HC158 CL=15pF 5 - 13 - - - - - ns

HCT 158 - 15 - - - - - ns

CL= 50pF 6 - - 27 - 34 - 41 ns

Select to Output t

PLH,tPHLCL

= 50pF 2 - - 150 - 190 - 225 ns

4.5 - - 30 - 38 - 45 ns

HC158 CL=15pF 5 - 12 - - - - - ns

HCT 158 - 14 - - - - - ns

CL= 50pF 6 - - 26 - 33 - 38 ns

Output Transition Time t

TLH,tTHLCL

= 50pF 2 - - 75 - 95 - 110 ns

4.5 - - 15 - 19 - 22 ns
6 - - 13 - 16 - 19 ns

Power Dissipation
Capacitance (Notes 4, 5)

C

PD

-5

HC158 - 35 - - - - - pF

HCT 158 - 35 - - - - - pF

Input Capacitance C

IN

CL= 50pF - - - 10 - 10 - 10 pF

NOTES:

4. CPD is used to determine the dynamic power consumption, per multiplexer.

5. PD = V

CC

2

fi(CPD + CL) where fi = input frequency, CL = output load capacitance, VCC = supply voltage.

Switching Specifications Input t

r

, tf = 6ns (Continued)

PARAMETER SYMBOL

TEST

CONDITIONS

V

CC

(V)

25oC -40oC TO 85oC -55oC TO 125oC

UNITSMIN TYP MAX MIN MAX MIN MAX

CD74HC157, CD74HCT157, CD74HC158, CD74HCT158

7

Test Circuits and Waveforms

FIGURE 1. HC AND HCU TRANSITION TIMES AND PROPAGA-

TION DELAY TIMES, COMBINATION LOGIC

FIGURE 2. HCT TRANSITION TIMES AND PROPAGATION

DELAY TIMES, COMBINATION LOGIC

t

PHL

t

PLH

t

THL

t

TLH

90%
50%
10%

50%

10%

INVERTING

OUTPUT

INPUT

GND

V

CC

tr = 6ns tf = 6ns

90%

t

PHL

t

PLH

t

THL

t

TLH

2.7V

1.3V

0.3V

1.3V

10%

INVERTING

OUTPUT

INPUT

GND

3V

tr = 6ns

t

f

= 6ns

90%

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