Philips hef40240b DATASHEETS
INTEGRATED CIRCUITS
DATA SH EET
For a complete data sheet, please also download:
•The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
•The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
HEF40240B
buffers
Octal inverting buffers with 3-state
outputs
Product specification
File under Integrated Circuits, IC04
January 1995
Philips Semiconductors Product specification
Octal inverting buffers with 3-state outputs
DESCRIPTION
The HEF40240B is an octal 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 HEF40240B is pin and functionally compatible with
the TTL ‘240’ device.
HEF40240B
buffers
Fig.1 Functional diagram.
Fig.2 Pinning diagram.
HEF40240BP(N): 20-lead DIL; plastic (SOT146-1)
HEF40240BD(F): 20-lead DIL; ceramic (cerdip) (SOT152)
HEF40240BT(D): 20-lead SO; plastic (SOT163-1)
( ): Package Designator North America
PINNING
I
to I
A1
A4
to I
I
B1
B4
O
to O
A1
O
to O
B1
EOA, EO
A4
B4
B
inputs
inputs
bus outputs
bus outputs
output enable inputs (active LOW)
FAMILY DATA, IDDLIMITS category buffers
See Family Specifications
January 1995 2
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