Datasheet M74HC126, M74HC125 Datasheet (SGS Thomson Microelectronics)

.HIGH SPEED

tPD= 8 ns (TYP.) AT VCC=5V

.LOWPOWER DISSIPATION

ICC=4µA(MAX.) AT 25 °C

.OUTPUT DRIVE CAPABILITY

15 LSTTL LOADS

.BALANCEDPROPAGATION DELAYS

t

PLH=tPHL

.SYMMETRICALOUTPUT IMPEDANCE

IOL=IOH = 6 mA (MIN.)

.HIGH NOISEIMMUNITY

V

NIH=VNIL

=28%VCC(MIN.)

.WIDE OPERATING VOLTAGERANGE

VCC(OPR)= 2 V TO6 V

.PIN AND FUNCTION COMPATIBLE

WITH 54/74LS125/126

M54/74HC125
M54/74HC126

QUAD BUS BUFFERS (3-STATE)

B1R

(PlasticPackage)

M1R

(MicroPackage)

ORDER CODES :

M54HC X XXF1R M74H CXXXM1R
M74HC X XXB1R M74HCX X XC1R

F1R

(CeramicPackage)

C1R

(Chip Carrier)

DESCRIPTION

The M54/74HC125/126 are high speed CMOS
QUAD BUS BUFFER (3-STATE) FABRICATED IN
SILICON GATEC2MOS technology.

They have the same high speed performance of
LSTTL combined with true CMOS low power con­sumption.

These devices require the same 3-STATE control
inputG to betaken high to make the output go into
the high impedance state.

All inputs are equipped with protection circuits
against static discharge and transient excess volt­age.

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN CONNECTIONS(top view)

HC125

HC126

September 1993

NC =
No Internal
Connection

1/11

M54/M74HC125/126

CHIP CARRIER

HC125 HC126

TRUTH TABLE (HC125)

AGY

XHZ

LLL

HLH

PIN DESCRIPTION (HC125)

PIN No SYMBOL NAME AND FUNCTION

1, 4, 10, 13 G1 to G4 OutputEnable Input

2, 5, 9, 12 A1 to A4 Data Inputs
3, 6, 8, 11 Y1 to Y4 Data Outputs

7 GND Ground (0V)

14 V

CC

Positive Supply Voltage

IEC LOGIC SYMBOLS

HC125 HC126

TRUTH TABLE (HC126)

AGY

XLZ

LHL

HHH

PIN DESCRIPTIO N (HC1 26)

PIN No SYMBOL NAME AND FUNCTION

1, 4, 10, 13 G1 to G4 Output Enable Input

2, 5, 9, 12 A1 to A4 Data Inputs
3, 6, 8, 11 Y1 to Y4 Data Outputs

7 GND Ground (0V)

14 V

CC

Positive Supply Voltage

2/11

CIR CUI T DI A GR AM

HC125 HC126

ABSOLU TE M AXIMU M R AT INGS

M54/M74HC125/126

Symbol Parameter Value Unit

V

CC

V

V

O

I

IK

I

OK

I

O

I

or I

CC

P

D

T

stg

T

L

AbsoluteMaximumRatingsarethose values beyond whichdamage tothedevicemayoccur.Functional operationunder theseconditionisnotimplied.
(*)500 mW:≅ 65oC derateto 300 mW by 10mW/oC: 65oCto85oC

Supply Voltage -0.5 to +7 V
DC Input Voltage -0.5 to VCC+ 0.5 V

I

DC Output Voltage -0.5 to VCC+ 0.5 V
DC Input Diode Current ± 20 mA
DC Output Diode Current ± 20 mA
DC Output Source Sink Current Per Output Pin ± 35 mA
DC VCCor Ground Current ± 70 mA

GND

Power Dissipation 500 (*) mW
Storage Temperature -65 to +150
Lead Temperature (10 sec) 300

o

C

o

C

RECO MM ENDED OPERAT I N G CO NDI TIONS

Symbol Parameter Value Unit

V

V

T

t

V

r,tf

Supply Voltage 2 to 6 V

CC

Input Voltage 0 to V

I

Output Voltage 0 to V

O

Operating Temperature: M54HC Series

op

M74HC Series

CC
CC

-55 to +125

-40 to +85

Input Rise and Fall Time VCC= 2 V 0 to 1000 ns

V

= 4.5 V 0 to 500

CC

V

= 6 V 0 to 400

CC

V
V

o

C

o

C

3/11

M54/M74HC125/126

DC SPECIFICATIONS

Symbol Parameter

V

V

V

V

I

I

High Level Input

IH

Voltage

Low Level Input

IL

Voltage

High Level

OH

Output Voltage

Low Level Output

OL

Voltage

I

Input Leakage

I

Current
3 State Output

OZ

Off-state Current
Quiescent Supply

CC

Current

Test Conditions Value

V

(V)

CC

=25oC

A

54HC and 74HC

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

-40 to 85oC
74HC

-55 to 125oC
54HC

Unit

T

2.0 1.5 1.5 1.5

4.5 3.15 3.15 3.15

6.0 4.2 4.2 4.2

2.0 0.5 0.5 0.5

4.5 1.35 1.35 1.35

6.0 1.8 1.8 1.8

2.0

4.5 4.4 4.5 4.4 4.4

6.0 5.9 6.0 5.9 5.9

4.5 I

6.0 I

2.0

4.5 0.0 0.1 0.1 0.1

6.0 0.0 0.1 0.1 0.1

4.5 I

6.0 I

6.0

6.0

=

V

I

IO=-20 µA

V

IH

or

V

IL

=-6.0 mA 4.18 4.31 4.13 4.10

O

=-7.8 mA 5.68 5.8 5.63 5.60

O

V

=

I

IO=20µA

V

IH

or

V

IL

= 6.0 mA 0.17 0.26 0.33 0.40

O

= 7.8 mA 0.18 0.26 0.33 0.40

O

VI=VCCor GND ±0.1 ±1 ±1 µA

V

I=VIH

or V

VO=VCCor GND

1.9 2.0 1.9 1.9

0.0 0.1 0.1 0.1

IL

±0.5 ±5 ±10 µA

6.0 VI=VCCor GND 4 40 80 µA

V

V

V

V

4/11

M54/M74HC125/126

AC ELECTRICAL CHARACTERISTICS (Inp ut tr=tf=6ns)

Test Conditions Value

T

=25oC

Symbol Parameter

t
t

TLH
THL

Output Transition
Time

V

C

CC

(V)

L

(pF)

2.0
50

4.5 6121518

A

54HC and 74HC

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

20 60 75 90

6.0 5101315

t

PLH

t

PHL

Propagation
Delay Time

2.0
50

4.5 9151922

36 75 95 110

6.0 8131619

2.0

150

4.5 13 21 26 32

52 105 130 160

6.0 11 18 22 27

t

t

PZL
PZH

3 State Output
Enable Time

2.0
50 RL=1KΩ

4.5 9151922

36 75 95 110

6.0 8131619

2.0

150 R

4.5 13 21 26 32

=1KΩ

L

52 105 130 160

6.0 11 18 22 27

t

t

PLZ
PHZ

3 State Output
Disable Time

2.0
50 R

4.5 12 16 20 24

=1KΩ

L

48 80 100 120

6.0 10 14 17 20

C

C

PD

Input Capacitance 5 10 10 10 pF

IN

(*) Power Dissipation

35

Capacitance

(*) CPDisdefined as the valueof the IC’s internal equivalent capacitance which is calculated fromthe operating current consumption withoutload.
(Referto Test Circuit). Average operting currentcan be obtained bythe followingequation. ICC(opr) = CPD•VCC•fIN+I

-40 to 85oC
74HC

-55 to 125oC
54HC

CC

Unit

ns

ns

ns

ns

ns

ns

pF

SWITCHING CHARACTERISTICS TEST WAVEFORM

HC125

A

Y

HC126

A

Y

G

Y

G

Y

5/11

M54/M74HC125/126

TEST CIRCUIT ICC(Opr.)

HC125

THE OTHER INPUTS ARE CONNECTED TO V

HC126

THE OTHER INPUTS ARE CONNECTED TO V

LINEOR GND LINE

CC

LINEOR GND LINE

CC

6/11

Plastic DIP14 MECHANICAL DATA

M54/M74HC125/126

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

a1 0.51 0.020

B 1.39 1.65 0.055 0.065

b 0.5 0.020

b1 0.25 0.010

D 20 0.787
E 8.5 0.335

e 2.54 0.100

e3 15.24 0.600

F 7.1 0.280

I 5.1 0.201

L 3.3 0.130

Z 1.27 2.54 0.050 0.100

mm inch

P001A

7/11

M54/M74HC125/126

Ceramic DIP14/1 MECHANICAL DATA

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 20 0.787
B 7.0 0.276
D 3.3 0.130
E 0.38 0.015

e3 15.24 0.600

F 2.29 2.79 0.090 0.110
G 0.4 0.55 0.016 0.022
H 1.17 1.52 0.046 0.060

L 0.22 0.31 0.009 0.012
M 1.52 2.54 0.060 0.100
N 10.3 0.406

P 7.8 8.05 0.307 0.317

Q 5.08 0.200

mm inch

8/11

P053C

SO14 MECHANICAL DATA

M54/M74HC125/126

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 1.75 0.068
a1 0.1 0.2 0.003 0.007
a2 1.65 0.064

b 0.35 0.46 0.013 0.018

b1 0.19 0.25 0.007 0.010

C 0.5 0.019

c1 45° (typ.)

D 8.55 8.75 0.336 0.344

E 5.8 6.2 0.228 0.244

e 1.27 0.050

e3 7.62 0.300

F 3.8 4.0 0.149 0.157

G 4.6 5.3 0.181 0.208

L 0.5 1.27 0.019 0.050

M 0.68 0.026

S8°(max.)

mm inch

P013G

9/11

M54/M74HC125/126

PLCC20 MECHANICAL DATA

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 9.78 10.03 0.385 0.395

B 8.89 9.04 0.350 0.356

D 4.2 4.57 0.165 0.180
d1 2.54 0.100
d2 0.56 0.022

E 7.37 8.38 0.290 0.330

e 1.27 0.050

e3 5.08 0.200

F 0.38 0.015
G 0.101 0.004
M 1.27 0.050

M1 1.14 0.045

mm inch

10/11

P027A

M54/M74HC125/126

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 byimplication or otherwise under any patent or patentrights 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 Microelectronicsproducts are not authorized foruse ascritical componentsin life support devices orsystems without express
written approval of SGS-THOMSON Microelectonics.

 1994 SGS-THOMSON Microelectronics - All Rights Reserved

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11/11