74HC541 データシートの表示（PDF） - Philips Electronics
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74HC541 Datasheet PDF : 7 Pages
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Philips Semiconductors
Octal buffer/line driver; 3-state
Product specification
74HC/HCT541
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
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
OE1
OE2
An
UNIT LOAD COEFFICIENT
1.50
1.00
0.70
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HCT
+25
−40 to +85
UNIT
−40 to +125
VCC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
An to Yn
15 28
35
tPZH/ tPZL 3-state output enable time
OE to Yn
21 35
44
tPHZ/ tPLZ 3-state output disable time
OE to Yn
21 35
44
tTHL/ tTLH output transition time
5 12
15
42 ns
53 ns
53 ns
18 ns
4.5 Fig.6
4.5 Fig.7
4.5 Fig.7
4.5 Fig.6
December 1990
6
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