74HC280 Datasheet, PDF (6/7 Pages) NXP Semiconductors – 9-bit odd/even parity generator/checker

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
I_CC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆I_CC) for a unit load of 1 is given in the family specifications.
To determine ∆I_CC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
I_n
UNIT LOAD COEFFICIENT
1.0
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
SYMBOL PARAMETER
74HCT
+25
−40 to +85
min. typ. max. min. max.
t_PHL/ t_PLH propagation delay
I_n to ∑_E
21 42
53
t_PHL/ t_PLH propagation delay
I_n to ∑_O
26 45
56
t_THL/ t_TLH output transition time
7 15
19
TEST CONDITIONS
−40 to +125
UNIT
V_CC
(V)
min. max.
WAVEFORMS
63 ns 4.5 Fig.6
68 ns 4.5 Fig.6
22 ns 4.5 Fig.6
December 1990
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