1.

General description

The 74HC245; 74HCT245 is a high-speed Si-gate CMOS device and is pin compatible

with Low-Power Schottky TTL (LSTTL).

The 74HC245; 74HCT245 is an octal transceiver featuring non-inverting 3-state bus

compatible outputs in both send and receive directions. The 74HC245; 74HCT245

features an output enable input (OE) for easy cascading and a send/receive input (DIR)

for direction control. OE controls the outputs so that the buses are effectively isolated.

The 74HC245; 74HCT245 is similar to the 74HC640; 74HCT640 but has true

(non-inverting) outputs.

2.

Features

−40 °Cto+85 °C and from −40 °C to +125 °C

3.

Quick reference data

74HC245; 74HCT245

Octal bus tranceiver; 3-state

Rev. 03 — 31 January 2005

Product data sheet

Table 1:

Quick reference data

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Type 74HC245

propagation delay

An to Bn or Bn to An

-7

-ns

input capacitance

-

3.5

-

pF

input/output capacitance

-

10

-

pF

power dissipation

capacitance per

transceiver

[1] -30

-

pF

Type 74HCT245

propagation delay

An to Bn or Bn to An

-10

-

ns