1. General description
The 74AHC244; 74AHCT244 is a high-speed Si-gate CMOS device.
The 74AHC244; 74AHCT244 has octal non-inverting buffer/line drivers with 3-state
outputs. The 3-state outputs are controlled by the output enable inputs (nOE). A HIGH on
nOE causes the outputs to assume a high-impedance OFF-state.
2. Features
■ Balanced propagation delays
■ All inputs have a Schmitt-trigger action
■ Inputs accepts voltages higher than V
CC
■ For 74AHC244 only: operates with CMOS input levels
■ For 74AHCT244 only: operates with TTL input levels
■ ESD protection:
◆ HBM JESD22-A114E exceeds 2000 V
◆ MM JESD22-A115-A exceeds 200 V
◆ CDM JESD22-C101C exceeds 1000 V
■ Multiple package options
■ Specified from −40 °C to +85 °C and from −40 °C to +125 °C
3. Ordering information
74AHC244; 74AHCT244
Octal buffer/line driver; 3-state
Rev. 05 — 20 December 2007 Product data sheet
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74AHC244D −40 °C to +125 °C SO20 plastic small outline package; 20 leads;
body width 7.5 mm
SOT163-1
74AHCT244D
74AHC244PW −40 °C to +125 °C TSSOP20 plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT360-1
74AHCT244PW
74AHC244BQ −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
74AHCT244BQ
