74HC245 Datasheet, PDF (1/22 Pages) NXP Semiconductors – Octal bus transceiver; 3-state

74HC245; 74HCT245
Octal bus tranceiver; 3-state
Rev. 03 — 31 January 2005
Product data sheet
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
s Octal bidirectional bus interface
s Non-inverting 3-state outputs
s Multiple package options
s Complies with JEDEC standard no. 7A
s ESD protection:
x HBM EIA/JESD22-A114-B exceeds 2000 V
x MM EIA/JESD22-A115-A exceeds 200 V
s Specified from −40 °C to +85 °C and from −40 °C to +125 °C
3. Quick reference data
Table 1: Quick reference data
GND = 0 V; T_amb = 25 °C; t_r = t_f = 6 ns.
Symbol Parameter
Conditions
Min Typ Max Unit
Type 74HC245
t_PHL, t_PLH propagation delay
An to Bn or Bn to An
C_L = 15 pF;
V_CC = 5 V
-
7
-
ns
C_I
input capacitance
-
3.5 -
pF
C_I/O
input/output capacitance
-
10
-
pF
C_PD
power dissipation
capacitance per
transceiver
V_I = GND to V_CC
[1] _-
30
-
pF
Type 74HCT245
t_PHL, t_PLH propagation delay
An to Bn or Bn to An
C_L = 15 pF;
V_CC = 5 V
-
10
-
ns