74HC280 Просмотр технического описания (PDF) - Philips Electronics
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74HC280 Datasheet PDF : 7 Pages
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Philips Semiconductors
9-bit odd/even parity generator/checker
Product specification
74HC/HCT280
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications.
To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
In
UNIT LOAD COEFFICIENT
1.0
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
SYMBOL PARAMETER
74HCT
+25
−40 to +85
min. typ. max. min. max.
tPHL/ tPLH propagation delay
In to ∑E
21 42
53
tPHL/ tPLH propagation delay
In to ∑O
26 45
56
tTHL/ tTLH output transition time
7 15
19
TEST CONDITIONS
−40 to +125
UNIT
VCC
(V)
min. max.
WAVEFORMS
63 ns 4.5 Fig.6
68 ns 4.5 Fig.6
22 ns 4.5 Fig.6
December 1990
6
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