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74HCT181N View Datasheet(PDF) - Philips Electronics

Part Name
Description
View to exact match
74HCT181N
Philips
Philips Electronics Philips
74HCT181N Datasheet PDF : 20 Pages
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Philips Semiconductors
4-bit arithmetic logic unit
Product specification
74HC/HCT181
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns
SYMBOL
PARAMETER
CONDITIONS
tPHL/ tPLH
CI
CPD
propagation delay
An or Bn to A=B
Cn to Cn+4
input capacitance
power dissipation capacitance
per L package
CL = 15 pF; VCC = 5 V
notes 1 and 2
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW):
PD = CPD × VCC2 × fi + (CL × VCC2 × fo) where:
fi = input frequency in MHz
fo = output frequency in MHz
(CL × VCC2 × fo) = sum of outputs
CL = output load capacitance in pF
VCC = supply voltage in V
2. For HC the condition is VI = GND to VCC
For HCT the condition is VI = GND to VCC 1.5 V
TYPICAL
HC
HCT
28
30
17
21
3.5
3.5
90
92
UNIT
ns
ns
pF
pF
Fig.1 Pin configuration.
Fig.2 Logic symbol.
1998 Jun 10
3
A
B
Fig.3 IEC logic symbol.
 

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