Philips 74hc4049 DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

For a complete data sheet, please also download:

•The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications

•The IC06 74HC/HCT/HCU/HCMOS Logic Package Information

•The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines

74HC4049

Hex inverting high-to-low level
shifter

Product specification
File under Integrated Circuits, IC06

December 1990

Philips Semiconductors Product specification

Hex inverting high-to-low level shifter 74HC4049

FEATURES

• Output capability: standard

• ICC category: SSI

This feature enables the inverting buffers to be used as
logic level translators, which will convert high level logic to
low level logic, while operating from a low voltage power
supply. For example 15 V logic (“4000B series”) can be
converted down to 2 V logic.

GENERAL DESCRIPTION

The 74HC4049 is a high-speed Si-gate CMOS device and
is pin compatible with the “4049” of the “4000B” series. It
is specified in compliance with JEDEC standard no. 7A.

The 74HC4049 provides six inverting buffers with a
modified input protection structure, which has no diode
connected to V

. Input voltages of up to 15 V may

CC

The actual input switch level remains related to the V
and is the same as mentioned in the family characteristics.
At the same time each part can be used as a simple
inverter without level translation.

APPLICATIONS

• Converting 15 V logic (“4000B” series) down to 2 V logic.

therefore be used.

QUICK REFERENCE DATA

GND = 0 V; T

=25°C; tr=tf= 6 ns

amb

SYMBOL PARAMETER CONDITIONS

t

PHL/tPLH

C

I

C

PD

propagation delay nA to nYC
input capacitance 3.5 pF
power dissipation capacitance per buffer note 1 14 pF

= 15 pF; VCC= 5 V 8 ns

L

CC

TYPICAL

UNIT

HC

Note

1. C

is used to determine the dynamic power dissipation (PD in µW):

PD

PD=CPD× V

2

× fi+ ∑ (CL× V

CC

2

× fo) where:

CC

fi= input frequency in MHz
fo= output frequency in MHz
CL= output load capacitance in pF
VCC= supply voltage in V
∑ (CL× V

2

× fo) = sum of outputs

CC

ORDERING INFORMATION

“74HC/HCT/HCU/HCMOS Logic Package Information”

See

.

December 1990 2

Philips Semiconductors Product specification

Hex inverting high-to-low level shifter 74HC4049

PIN DESCRIPTION

PIN NO. SYMBOL NAME AND FUNCTION

1V
2, 4, 6, 10, 12, 15 1
3, 5, 7, 9, 11, 14 1A to 6A data inputs
8 GND ground (0 V)
13, 16 n.c. not connected

CC

Y to 6Y data outputs

positive supply voltage

Fig.1 Pin configuration.

December 1990 3

Fig.2 Logic symbol. Fig.3 IEC logic symbol.