Data Sheet

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 V
CC
.
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