Datasheet

9397 750 14502 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 03 — 31 January 2005 10 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
11. Dynamic characteristics
I
CC
quiescent supply current V
I
=V
CC
or GND; I
O
=0A;
V
CC
= 5.5 V
- - 160 µA
∆I
CC
additional quiescent supply
current per input pin
V
I
=V
CC
− 2.1 V; other inputs at
V
I
=V
CC
or GND;
V
CC
= 4.5 V to 5.5 V; I
O
=0A
An or Bn inputs - - 196 µA
OE input - - 735 µA
DIR input - - 441 µA
Table 8: Static characteristics type 74HCT245
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Typ Max Unit
Table 9: Dynamic characteristics type 74HC245
GND = 0 V; test circuit see Figure 7.
Symbol Parameter Conditions Min Typ Max Unit
T
amb
= 25 °C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
see Figure 5
V
CC
= 2.0 V - 25 90 ns
V
CC
= 4.5 V - 9 18 ns
V
CC
= 5.0 V; C
L
=15pF - 7 - ns
V
CC
= 6.0 V - 7 15 ns
t
PZH
, t
PZL
3-state output enable time OE to
An or
OE to Bn
see
Figure 6
V
CC
= 2.0 V - 30 150 ns
V
CC
= 4.5 V - 11 30 ns
V
CC
= 6.0 V - 9 26 ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or
OE to Bn
see
Figure 6
V
CC
= 2.0 V - 41 150 ns
V
CC
= 4.5 V - 15 30 ns
V
CC
= 6.0 V - 12 26 ns
t
THL
, t
TLH
output transition time see Figure 5
V
CC
= 2.0 V - 14 60 ns
V
CC
= 4.5 V - 5 12 ns
V
CC
= 6.0 V - 4 10 ns
C
PD
power dissipation capacitance
per transceiver
V
I
= GND to V
CC
[1]
-30-pF
T
amb
= −40 °C to +85 °C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
see Figure 5
V
CC
= 2.0 V - - 115 ns
V
CC
= 4.5 V - - 23 ns
V
CC
= 6.0 V - - 20 ns