Philips HEF40244BD, HEF40244BU, HEF40244BT, HEF40244BPB, HEF40244BP Datasheet
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INTEGRATED CIRCUITS
DATA SHEET
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
HEF40244B buffers
Octal buffers with 3-state outputs
Product specification |
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January 1995 |
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File under Integrated Circuits, IC04 |
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Philips Semiconductors |
Product specification |
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Octal buffers with 3-state outputs
HEF40244B buffers
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 inputs EOA and EOB. A HIGH on EO 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.
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 |
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IA1 to IA4 |
inputs |
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IB1 to IB4 |
inputs |
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OA1 to OA4 |
bus outputs |
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OB1 to OB4 |
bus outputs |
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B |
output enable inputs (active LOW) |
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EO |
A, |
EO |
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FAMILY DATA, IDD LIMITS category buffers
See Family Specifications
Fig.1 Functional diagram.
January 1995 |
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