M54HCT240/241/244

M74HCT240/241/244

September 1993

HCT240: INVERTED - HCT241/244 NON INVERTED

OCTAL BUS BUFFER WITH 3 STATE OUTPUTS

B1R

(Plastic Package)

ORDER CODES :

M54HCTXXXF1R

M74HCTXXXM1R

M74HCTXXXB1R

M74HCTXXXC1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTION (top view)

.

HIGH SPEED

.

LOW POWER DISSIPATION

.

COMPATIBLE WITH TTL OUTPUTS

.

OUTPUT DRIVE CAPABILITY

15 LSTTL LOADS

.

SYMMETRICAL OUTPUT IMPEDANCE

.

BALANCED PROPAGATION DELAYS

.

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS240/241/244

DESCRIPTION

The M54/74HCT240, HCT241 and HCT244 are

high speed CMOS OCTAL BUS

BUFFERs

fabricated in silicon gate C

They have the same high speed performance of

LSTTL combined with true CMOS low power

consumption. The designer has a choise of select

combination of inverting and non-inverting outputs,

symmetrical G (active low output control) input, and

complementary G and G inputs. Each control input

governs four BUS BUFFERs.

This integrated circuit has input and output

characteristics that are fully compatible with 54/74

LSTTL logic families. M54/74HCT devices are

designed to directly interface HSC

with TTL and NMOS components.

They are also plug in replacements for LSTTL

devices giving a reduction of power consumption.

These devices are designed to be used with 3 state

memory address drivers, etc.

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

HCT244

HCT241

HCT240

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