Datasheet

1. General description
The 74HC540; 74HCT540 is an 8-bit inverting buffer/line driver with 3-state outputs. The
device features two output enables (OE
1 and OE2). A HIGH on OEn 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
 Inverting outputs
 Complies with JEDEC standard no. 7A
 Input levels:
 For 74HC540: CMOS level
 For 74HCT540: TTL level
 ESD protection:
 HBM JESD22-A114F exceeds 2000 V
 MM JESD22-A115-A exceeds 200 V
 Multiple package options
 Specified from 40 C to +85 C and from 40 C to +125 C
3. Ordering information
74HC540; 74HCT540
Octal buffer/line driver; 3-state; inverting
Rev. 3 — 21 January 2013 Product data sheet
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74HC540N 40 Cto+125C DIP20 plastic dual in-line package; 20 leads (300 mil) SOT146-1
74HCT540N
74HC540D 40 C to +125 C SO20 plastic small outline package; 20 leads;
body width 7.5 mm
SOT163-1
74HCT540D
74HC540DB 40 Cto+125C SSOP20 plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT339-1
74HCT540DB