Datasheet

74HC_HCT163 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 3 — 2 June 2014 15 of 24
NXP Semiconductors
74HC163; 74HCT163
Presettable synchronous 4-bit binary counter; synchronous reset
Test data is given in Table 9.
Test circuit definitions:
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 resistance.
S1 = Test selection switch
Fig 15. Test circuit for measuring switching times
9
0
9
0
W
:
W
:


9
9
,
9
,
QHJDWLYH
SXOVH
SRVLWLYH
SXOVH
9
9
0
9
0


W
I
W
U
W
U
W
I
DDG
'87
9
&&
9
&&
9
,
9
2
5
7
 5
/
6
&
/
RSHQ
*
Table 9. Test data
Type Input Load S1 position
V
I
t
r
, t
f
C
L
R
L
t
PHL
, t
PLH
74HC163 V
CC
6ns 15pF, 50 pF 1k open
74HCT163 3 V 6 ns 15 pF, 50 pF 1 k open