Philips hef4049b 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

HEF4049B
buffers

HEX inverting buffers

Product specification
File under Integrated Circuits, IC04

January 1995

Philips Semiconductors Product specification

HEX inverting buffers

DESCRIPTION

The HEF4049B provides six 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.

HEF4049B

buffers

HEF4049BP(N): 16-lead DIL; plastic (SOT38-1)
HEF4049BD(F): 16-lead DIL; ceramic (cerdip) (SOT74)
HEF4049BT(D): 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America

Guaranteed fan-out in common logic families

DRIVEN ELEMENT

standard TTL 2
74 LS 9
74 L 16

GUARANTEED

FAN-OUT

Fig.1 Functional diagram.

Fig.2 Pinning diagram.

Fig.3 Logic diagram (one gate).

APPLICATION INFORMATION

Some examples of applications for the HEF4049B are:

• LOCMOS to DTL/TTL converter

• HIGH sink current for driving 2 TTL loads

• HIGH-to-LOW level logic conversion

Input protection

Fig.4 Input protection circuit that allows input

voltages in excess of VDD.

FAMILY DATA, I

See Family Specifications

LIMITS category BUFFERS

DD

January 1995 2