7485 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
7485 Datasheet PDF : 9 Pages
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Philips Semiconductors
4-bit magnitude comparator
Product specification
74HC/HCT85
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
IA<B
IA>B
IA=B
An, Bn
UNIT LOAD COEFFICIENT
1.00
1.00
1.50
1.50
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
min.
+25
typ. max.
74HCT
−40 to +85
min. max.
−40 to +125
min. max.
UNIT
VCC
(V)
WAVEFORMS
tPHL/ tPLH propagation delay
26 44
55
66 ns 4.5 Fig.6
An, Bn to QA>B or QA<B
tPHL/ tPLH propagation delay
An, Bn to QA=B
24 40
50
60 ns 4.5 Fig.6
tPHL/ tPLH
propagation delay
IA<B, IA=B, IA>B to
QA<B, QA>B
18 31
39
47 ns 4.5 Fig.6
tPHL/ tPLH propagation delay
IA=B to QA=B
18 31
39
47 ns 4.5 Fig.6
tTHL/ tTLH output transition time
7 15
19
22 ns 4.5 Fig.6
December 1990
7
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