ST M74HC541 User Manual

M74HC541

OCTAL BUS BUFFER

WITH 3 STATE OUTPUTS (NON INVERTED)

■ HIGH SPEED:

t

= 9ns (TYP.) at VCC = 6V

PD

■ LOW POWER DISSIPATION:

I

= 4µA(MAX.) at TA=25°C

CC

■ HIGH NOISE IMMUNITY:

V

= V

NIH

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

| = IOL = 6mA (MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

■ WIDE OPERATING VOLTAGE RANGE:

V

(OPR) = 2V to 6V

CC

■ PIN AND FUNCTION COMPATIBLE WITH

= 28 % VCC (MIN.)

NIL

PHL

74 SERIES 541

DESCRIPTION

The 74HC541 is an advanced high-speed CMOS OCTAL BUS BUFFER (3-ST ATE) fabricated with silicon gate C

2

MOS technology. The M74HC5 41 is a non inverting buffer. The 3-STATE control gate operates as a two input AND such that if either G1

and G2 are high, all

eight output a re in the high impedance state. In

TSSOPDIP SOP

ORDER CODES

PACKAGE TUBE T & R

DIP M74HC541B1R

SOP M74HC541M1R M74HC541RM13TR

TSSOP M74HC541TTR

order to enhance PC board layout the M74HC541 offer a pinout having inputs and outputs on opposite sides of the package. All inputs are equipped with protection circuits against static discharge and transient excess voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

1/10July 2001

M74HC541

INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1, 19 G1

2, 3, 4, 5, 6,

7, 8, 9

18, 17, 16, 15, 14, 13,

12, 11

10 GND Ground (0V) 20 V

TRUTH TABLE

INPUT OUTPUT

, G2 Output Enable Inputs

A1 to A8 Data Inputs

Y1 to Y8 Bus Outputs

CC

Positive Supply Voltage

G1

G2 An Yn

HXXZ XHXZ

LLHH LLLL

X : Don’t Care Z : High Impedance

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

I

OK

I

or I

CC

P

T

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied (*) 500mW at 65

Supply Voltage

CC

DC Input Voltage -0.5 to VCC + 0.5

I

DC Output Voltage -0.5 to VCC + 0.5

O

DC Input Diode Current

IK

DC Output Diode Current DC Output Current

O

DC VCC or Ground Current

GND

Power Dissipation

D

Storage Temperature

stg

Lead Temperature (10 sec)

L

; derate to 30 0m W by 10mW/°C from 65

°C

°C to 85°C

-0.5 to +7 V V V

± 20 mA ± 20 mA ± 35 mA ± 70 mA

500(*) mW

-65 to +150 °C

300 °C

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M74HC541

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

T

t

r

DC SPECIFICATIONS

Symbol Parameter

V

IH

V

IL

V

OH

V

OL

I

OZ

I

CC

Supply Voltage

CC

Input Voltage 0 to V

I

Output Voltage 0 to V

O

Operating Temperature

op

Input Rise and Fall Time VCC = 2.0V

, t

f

V V

= 4.5V

CC

= 6.0V

CC

Test Condition Value

T

= 25°C

A

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

High Level Input

V

CC

(V)

2.0 1.5 1.5 1.5

Voltage

6.0 4.2 4.2 4.2

Low Level Input

2.0 0.5 0.5 0.5

Voltage

6.0 1.8 1.8 1.8

High Level Output Voltage

Low Level Output Voltage

Input Leakage Current

High Impedance Output Leakage Current

Quiescent Supply Current

2.0

4.5

6.0

4.5

6.0

2.0

4.5

6.0

4.5

6.0

IO=-20 µA I

=-20 µA

O

I

=-20 µA

O

I

=-6.0 mA

O

I

=-7.8 mA

O

=20 µA

I

O

I

=20 µA

O

I

=20 µA

O

I

=6.0 mA

O

I

=7.8 mA

O

= VCC or GND

V

I

= VIH or V

V

I

IL

VO = VCC or GND

= VCC or GND

V

I

1.9 2.0 1.9 1.9

4.4 4.5 4.4 4.4

5.9 6.0 5.9 5.9

4.18 4.31 4.13 4.10

5.68 5.8 5.63 5.60

0.0 0.1 0.1 0.1

0.17 0.26 0.33 0.40

0.18 0.26 0.33 0.40

± 0.1 ± 1 ± 1 µA

± 0.5 ± 5 ± 10 µA

44080µA

2 to 6 V

CC CC

-55 to 125 °C

0 to 1000 ns

0 to 500 ns 0 to 400 ns

-40 to 85°C -55 to 125°C

V V

Unit

V4.5 3.15 3.15 3.15

V4.5 1.35 1.35 1.35

V

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