Philips HEF4050BDB, HEF4050BD, HEF4050BU, HEF4050BT, HEF4050BPB Datasheet

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DATA SH EET

Product speciﬁcation File under Integrated Circuits, IC04

January 1995

INTEGRATED CIRCUITS

HEF4050B buffers

HEX non-inverting buffers

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

January 1995 2

Philips Semiconductors Product speciﬁcation

HEX non-inverting buffers

HEF4050B

buffers

DESCRIPTION

The HEF4050B provides six non-inverting buffers with high current output capability suitable for driving TTL or high capacitive loads. Since input voltages in excess of the buffers’ supply voltage are permitted, the buffers may also be used to convert logic levels of up to 15 V to standard TTL levels. Their guaranteed fan-out into common bipolar logic elements is shown in the table below.

Fig.1 Functional diagram.

HEF4050BP(N): 16-lead DIL; plastic

(SOT38-1)

HEF4050BD(F): 16-lead DIL; ceramic (cerdip)

(SOT74)

HEF4050BT(D): 16-lead SO; plastic

(SOT109-1)

( ): Package Designator North America

Fig.2 Pinning diagram.

Guaranteed fan-out in common logic families

DRIVEN ELEMENT

GUARANTEED

FAN-OUT

standard TTL 2 74 LS 9 74 L 16

Fig.3 Logic diagram (one gate).

APPLICATION INFORMATION

Some examples of applications for the HEF4050B are:

• LOCMOS to DTL/TTL converter

• HIGH sink current for driving 2 TTL loads

• HIGH-to-LOW level logic conversion

Input protection

FAMILY DATA, IDDLIMITS category BUFFERS

See Family Specifications

Fig.4 Input protection circuit that allows input

voltages in excess of VDD.

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