74LVC161 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6 — 30 September 2013 11 of 22
NXP Semiconductors
74LVC161
Presettable synchronous 4-bit binary counter; asynchronous reset
[1] Typical values are measured at T
amb
=25C and V
CC
= 1.2 V, 1.8 V, 2.5 V, 2.7 V and 3.3 V respectively.
[2] t
pd
is the same as t
PLH
and t
PHL
.
[3] Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
[4] C
PD
is used to determine the dynamic power dissipation (P
D
in W).
P
D
=C
PD
V
CC
2
f
i
N+(C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz; f
o
= output frequency in MHz
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
N = number of inputs switching
(C
L
V
CC
2
f
o
) = sum of outputs
t
su
set-up time Dn to CP; see Figure 12
V
CC
= 1.65 V to 1.95 V 5.0 - - 5.0 - ns
V
CC
= 2.3 V to 2.7 V 4.0 - - 4.0 - ns
V
CC
= 2.7 V 3.0 - - 3.0 - ns
V
CC
= 3.0 V to 3.6 V 2.5 1.0 - 2.5 - ns
PE
to CP; see Figure 12
V
CC
= 1.65 V to 1.95 V 4.5 - - 4.5 - ns
V
CC
= 2.3 V to 2.7 V 4.0 - - 4.0 - ns
V
CC
= 2.7 V 3.5 - - 3.5 - ns
V
CC
= 3.0 V to 3.6 V 3.0 1.2 - 3.0 - ns
CEP, CET to CP; see Figure 13
V
CC
= 1.65 V to 1.95 V 8.0 - - 8.0 - ns
V
CC
= 2.3 V to 2.7 V 6.0 - - 6.0 - ns
V
CC
= 2.7 V 5.5 - - 5.5 - ns
V
CC
= 3.0 V to 3.6 V 5.0 2.1 - 5.0 - ns
t
h
hold time Dn, PE, CEP, CET to CP; see
Figure 12 and 13
V
CC
= 1.65 V to 1.95 V 3.0 - - 3.0 - ns
V
CC
= 2.3 V to 2.7 V 2.5 - - 2.5 - ns
V
CC
= 2.7 V 0.0 - - 0.0 - ns
V
CC
= 3.0 V to 3.6 V 0.5 0.0 - 0.5 - ns
f
max
maximum
frequency
see Figure 9
V
CC
= 1.65 V to 1.95 V 100 - - 80 - MHZ
V
CC
= 2.3 V to 2.7 V 125 - - 100 - MHZ
V
CC
= 2.7 V 150 - - 120 - MHz
V
CC
= 3.0 V to 3.6 V 150 200 - 120 - MHz
t
sk(o)
output skew time V
CC
= 3.0 V to 3.6 V
[3]
- - 1.0 - 1.5 ns
C
PD
power dissipation
capacitance
per input; V
I
= GND to V
CC
[4]
V
CC
= 1.65 V to 1.95 V - 11.1 - pF
V
CC
= 2.3 V to 2.7 V - 14.7 - pF
V
CC
= 3.0 V to 3.6 V - 17.9 - pF
Table 7. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 14.
Symbol Parameter Conditions 40 C to +85 C 40 C to +125 C Unit
Min Typ
[1]
Max Min Max