74HC147N Datasheet, PDF (7/7 Pages) NXP Semiconductors – 10-TO-4 LINE PRIORITY ENCODER

Philips Semiconductors
10-to-4 line priority encoder
Product specification
74HC/HCT147
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
A₃, A₄, A₇, A₈
A₅, A₆, A₀, A₁, A₂
UNIT LOAD COEFFICIENT
1.50
1.10
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
A_n to Y_n
20 35
44
t_THL/ t_TLH
output transition
time
7 15
19
−40 to +125
min. max.
53
22
UNIT
ns
ns
TEST CONDITIONS
V_CC ^WAVEFORMS
(V)
4.5 Fig.6
4.5 Fig.6
AC WAVEFORMS
(1) HC : V_M = 50%; V_I = GND to V_CC.
HCT: V_M = 1.3 V; V_I = GND to 3 V.
Fig.6 Waveforms showing the decimal data inputs (A_n) to output (Y_n) propagation delays and the output
transition times.
PACKAGE OUTLINES
See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.
December 1990
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