Datasheet
9397 750 14502 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 03 — 31 January 2005 14 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
Test data is given in Table 12.
Definitions test circuit:
R
T
= Termination resistance should be equal to output impedance Z
o
of the pulse generator.
C
L
= Load capacitance including jig and probe capacitance.
R
L
= Load resistor.
Fig 7. Load circuitry for switching times
Table 12: Test data
Type Input Test
V
I
t
r
, t
f
t
PHL
, t
PLH
t
PZH
, t
PHZ
t
PZL
, t
PLZ
74HC245 V
CC
6 ns open GND V
CC
74HCT245 3 V 6 ns open GND V
CC
mgk563
D.U.T
V
CC
V
CC
V
I
V
O
R
T
R
L
= 1 kΩ
C
L
50 pF
open
PULSE
GENERATOR