Philips hef40244b DATASHEETS

INTEGRATED CIRCUITS
DATA SH EET
The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC
The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC
HEF40244B buffers
Octal buffers with 3-state outputs
Product specification File under Integrated Circuits, IC04
January 1995
Philips Semiconductors Product specification
Octal buffers with 3-state outputs

DESCRIPTION

The HEF40244B is an octal non-inverting buffer with 3-state outputs. It features output stages with high current output capability suitable for driving highly capacitive loads.
The 3-state outputs are controlled by the output enable inputsEOAandEOB. A HIGH onEO causes the outputs to assume a high impedance OFF-state. The device also features hysteresis on all inputs to improve noise immunity. Schmitt-trigger action in the inputs makes the circuit highly tolerant to slower input rise and fall times.
The HEF40244B is pin and functionally compatible with the TTL ‘244’ device.
HEF40244B
buffers
Fig.1 Functional diagram.
Fig.2 Pinning diagram.
HEF40244BP(N): 20-lead DIL; plastic (SOT146-1) HEF40244BD(F): 20-lead DIL; ceramic (cerdip) (SOT152) HEF40244BT(D): 20-lead SO; plastic (SOT163-1) ( ): Package Designator North America

PINNING

to I
I
A1
A4
I
to I
B1
B4
O
to O
A1
A4
to O
O
B1
B4
EOA, EO
B
FAMILY DATA, I
inputs inputs bus outputs bus outputs output enable inputs (active LOW)
LIMITS category buffers
DD
See Family Specifications
January 1995 2
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