M74HC181 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'M74HC181' PDF : 15 Pages View PDF
M74HC181
CAPACITIVE CHARACTERISTICS
Test Condition
Value
Symbol
Parameter
VCC
(V)
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
CIN Input Capacitance
5 10
10
10 pF
CPD Power Dissipation
Capacitance (note
195
pF
1)
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC
PROPAGATION DELAY TIME TEST CONDITIONS
Test No
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
INPUT
Cn
Any A or B
Any A or B
Cn
Any A or B
Any A or B
Any A or B
Any A or B
Ai or Bi
Ai or Bi
Ai or Bi
Any A or B
OUTPUT
Cn + 4
Cn + 4
Cn + 4
Any F
G
G
F
F
Fi
Fi
Fi
A=B
Test Conditions
M=GND, S0=S3=Vcc, S1=S2=GND (SUM mode)
M=GND, S0=S3=GND, S1=S2=Vcc (DIFF mode)
M=GND (SUM or DIFF)
M=GND, S0=S3=Vcc, S1=S2=GND (SUM mode)
M=GND, S0=S3=GND, S1=S2=Vcc (DIFF mode)
M=GND, S0=S3=Vcc, S1=S2=GND (SUM mode)
M=GND, S0=S3=GND, S1=S2=Vcc (DIFF mode)
M=GND, S0=S3=Vcc, S1=S2=GND (SUM mode)
M=GND, S0=S3=GND, S1=S2=Vcc (DIFF mode)
M = Vcc (Logic Mode)
M=GND, S0=S3=GND, S1=S2=Vcc (DIFF mode)
TEST CIRCUIT
CL = 50pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50Ω)
8/15
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