Harman Kardon AVR 245, Service Manual

Page: 101 / 228

Philips Semiconductors Product specification
Hex inverter 74HCU04
FEATURES
•
Output capability: standard
•
I
CC
category: SSI
GENERAL DESCRIPTION
The 74HCU04 is a high-speed Si-gate CMOS device and is pin compatible with low power Schottky TTL (LSTTL).
It is specified in compliance with JEDEC standard no. 7A.
The 74HCU04 is a general purpose hex inverter. Each of the six inverters is a single stage
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°
C; t
r
= t
f
= 6 ns
Note
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
µ
W):
P
D
= C
PD
×
V
CC
2
×
f
i
+
∑
(C
L
×
V
CC
2
×
f
O
) where:
f
i
= input frequency in MHz
f
o
= output frequency in MHz
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
∑
(C
L
×
V
CC
2
×
f
o
) = sum of outputs
ORDERING INFORMATION
See “74HC/HCT/HCU/HCMOS Logic Package Information” .
FUNCTION TABLE
Note
1. H = HIGH voltage level
L = LOW voltage level
SYMBOL PARAMETER CONDITIONS TYP. UNIT
t
PHL
/ t
PLH
propagation delay nA to nY C
L
= 15 pF; V
CC
= 5 V 5 ns
C
I
input capacitance 3.5 pF
C
PD
power dissipation capacitance per inverter note 1 10 pF
INPUT OUTPUT
nA nY
L
H
H
L
101
AVR245
harman/kardon