74HC243DB datasheet(5/17 Pages) PHILIPS

5 / 17 page

9397 750 13808

Product data sheet

Rev. 03 — 12 November 2004

5 of 17

Philips Semiconductors

74HC243

Quad bus transceiver; 3-state

Functional description

7.1 Function table

[1]

H = HIGH voltage level;

L = LOW voltage level;

Z = high-impedance OFF-state.

Limiting values

[1]

Above 70

°C: P

tot derates linearly with 12 mW/K.

[2]

Above 70

°C: P

tot derates linearly with 8 mW/K.

Table 4:

Function table [1]

Control

Input or output

OEA

OEB

input

B = A

A = B

input

Table 5:

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to

GND (ground = 0 V).

Symbol

Parameter

Conditions

Min

Max

Unit

VCC

supply voltage

−0.5

IIK

input diode current

VI < −0.5 V or VI >VCC + 0.5 V

±20

IOK

output diode current

VO < −0.5 V or

VO >VCC + 0.5 V

±20

output source or sink

current

VO = −0.5 V to VCC + 0.5 V

±35

ICC, IGND

VCC or GND current

±70

Tstg

storage temperature

−65

+150

°C

Ptot

power dissipation

DIP14 package

[1] -

750

SO14 and SSOP16

packages

[2] -

500

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