74HC688 Datasheet, PDF (5/7 Pages) NXP Semiconductors – 8-bit magnitude comparator

Philips Semiconductors
8-bit magnitude comparator
Product specification
74HC/HCT688
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
74HC
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
t_PHL/ t_PLH propagation delay
P_n, Q_n to P = Q
t_PHL/ t_PLH propagation delay
E to P = Q
55 170
215
255
2.0 Fig.6
20 34
43
51 ns 4.5
16 29
37
43
6.0
28 120
150
180
2.0 Fig.7
10 24
30
36 ns 4.5
8 20
26
31
6.0
t_THL/ t_TLH output transition time
19 75
95
110
2.0 Figs 6 and 7
7 15
19
22 ns 4.5
6 13
16
19
6.0
December 1990
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