74HC_HCT85_CNV_15 Datasheet, PDF (6/9 Pages) NXP Semiconductors – 4-bit magnitude comparator

Philips Semiconductors
4-bit magnitude comparator
Product specification
74HC/HCT85
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I_CC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
+25
min. typ. max.
74HC
−40 to +85
min. max.
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. max.
t_PHL/ t_PLH propagation delay
63 195
245
295 ns 2.0 Fig.6
A_n, B_n to Q_A>B or Q_A<B
23 39
49
59
4.5
18 33
42
50
6.0
t_PHL/ t_PLH propagation delay
A_n, B_n to Q_A=B
58 175
220
265 ns 2.0 Fig.6
21 35
44
53
4.5
17 30
37
45
6.0
t_PHL/ t_PLH
t_PHL/ t_PLH
propagation delay
I_A<B, I_A=B, I_A>B to
Q_A<B, Q_A>B
propagation delay
I_A=B to Q_A=B
t_THL/ t_TLH output transition time
50 140
175
210 ns 2.0 Fig.6
18 28
35
42
4.5
14 24
30
36
6.0
39 120
150
180 ns 2.0 Fig.6
14 24
30
36
4.5
11 20
26
31
6.0
19 75
95
110 ns 2.0 Fig.6
7 15
19
22
4.5
6 13
16
19
6.0
December 1990
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