UNISONIC TECHNOLOGIES CO U74HC540 Technical data

UNISONIC TECHNOLOGIES CO., LTD

U74HC540

CMOS IC

OCTAL BUFFERS AND LINE
DRIVERS WITH 3-STATE
OUTPUTS

 DESCRIPTION

The U74HC540 combines with octal buffers and line drivers with

inverting 3-tate outputs. The 3-state output is controlled by output

enable inputs
high-impedance when either of the 2 inputs is applied with high

voltage.

 FEATURES

* Operation voltage range: 2V ~ 6V
* High-current 3-state outputs for bus driver
* Inverting outputs

1OE and 2OE , all eight outputs will be in

TSSOP-20

*Pb-free plating product number:

U74HC540L

 ORDERING INFORMATION

Ordering Number

Normal Lead Free Plating
U74HC540-P20-R U74HC540L-P20-R TSSOP-20 Tape Reel
U74HC540-P20-T U74HC540L-P20-T TSSOP-20 Tube

U74HC540L-P20-R

(1)Packing Type
(2)Package Type
(3)Lead Plating

Package Packing

(1) R: Tape Reel, T: Tube

(2) P20: TSSOP-20

(3) L: Lead Free Plating, Blank: Pb/Sn

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U74HC540 CMOS IC

 PIN CONFIGURATION

 FUNCTION TABLE (each gate)

INPUT OUTPUT

1OE 2OE

L L L H

L L H L
H X X Z
X H X Z

A Y

 LOGIC DIA GRAM (positive logic)

1

OE1
OE2

A1
A2

A3
A4

A5
A6

A7
A8

19

2
3

4
5

6
7

8
9

&EN

18

Y1

17

Y2

16

Y3

15

Y4

14

Y5

13

Y6

12

Y7

11

Y8

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