TC74VHC161F_07 Datasheet, PDF (10/15 Pages) Toshiba Semiconductor – Synchronous Presettable 4-Bit Counter

TC74VHC161,163F/FN/FT/FK
Noise Characteristics (input: t_r = t_f = 3 ns)
Characteristics
Symbol
Test Condition
Quiet output maximum dynamic V_OL
Quiet output minimum dynamic V_OL
Minimum high level dynamic input voltage
Maximum low level dynamic input voltage
V_OLP
V_OLV
V_IHD
V_ILD
C_L = 50 pF
C_L = 50 pF
C_L = 50 pF
C_L = 50 pF
Ta = 25°C
Unit
V_CC (V) Typ. Max
5.0
0.4 0.8
V
5.0
−0.4 −0.8
V
5.0
⎯
3.5
V
5.0
⎯
1.5
V
Input Equivalent Circuit
INPUT
Typical Application
Parallel Carry N-Bit Counter
H: COUNT
L: DISABLE
INPUTS
H: COUNT
L: DISABLE
LD A B C D
ENP
ENT
CARRY
CK
CLR QA QB QC QD
CLR
CK
OUTPUTS
INPUTS
LD A B C D
ENP
ENT
CARRY
CK
CLR QA QB QC QD
OUTPUTS
INPUTS
LD A B C D
ENP
ENT
CARRY
CK
CLR QA QB QC QD
OUTPUTS
NEXT
STAGE
10
2007-10-01