1.

General description

The 74HC240; 74HCT240 is an 8-bit inverting buffer/line driver with 3-state outputs. The

device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output

enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE

causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes.

This enables the use of current limiting resistors to interface inputs to voltages in excess

of VCC.

2.

Features and benefits

 Complies with JEDEC standard JESD7A

 Input levels:

 For 74HC240: CMOS level

 For 74HCT240: TTL level

 Inverting 3-state outputs

 ESD protection:

 HBM JESD22-A114F exceeds 2000 V

 MM JESD22-A115-A exceeds 200 V

 Multiple package options

 Specified from

40 Cto+85 C and from 40 Cto+125 C

3.

Ordering information

74HC240; 74HCT240

Octal buffer/line driver; 3-state; inverting

Rev. 4 — 25 February 2016

Product data sheet

Table 1.

Ordering information

Type number

Package

Temperature range

Name

Description

Version

74HC240D

40 C to +125 C

SO20

plastic small outline package; 20 leads;

body width 7.5 mm

SOT163-1

74HCT240D

74HC240DB

40 C to +125 C

SSOP20

plastic shrink small outline package; 20 leads; body

width 5.3 mm

SOT339-1

74HCT240DB

74HC240PW

40 C to +125 C

TSSOP20

plastic thin shrink small outline package; 20 leads;

body width 4.4 mm

SOT360-1

74HCT240PW

74HC240BQ

40 C to +125 C

DHVQFN20

plastic dual-in-line compatible thermal enhanced very

thin quad flat package; no leads; 20 terminals; body

2.5

 4.5  0.85 mm

SOT764-1

74HCT240BQ