74F298 데이터 시트보기 (PDF) - Philips Electronics
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74F298 Datasheet PDF : 8 Pages
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Philips Semiconductors
Quad 2-input multiplexer with storage
Product specification
74F298
LOGIC DIAGRAM
S 10
I1a
I0a
2
3
I1b
I0b
1
4
I1c
I0c
5
9
I1d
I0d
6
7
CP 11
VCC = Pin 16
GND = Pin 8
R
CP
S Qa
15
Qa
R
CP
S Qb
14
Qb
R
CP
S Qc
13
Qc
R
CP
S Qd
12
Qd
SF00862
FUNCTION TABLE
INPUTS
OUTPUT
OPERATING MODE
CP S I0n I1n
Qn
↓
l
l
X
L
↓
l
h
X
H
Load source “0”
↓
↓
H=
h=
L=
l=
X=
↓=
h
X
l
L
h
X
h
H
Load source “1”
High voltage level
High voltage level one setup time prior to the High-to-Low
clock transition
Low voltage level
Low voltage level one setup time prior to the High-to-Low
clock transition
Don’t care
High-to-Low clock transition
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
PARAMETER
VCC
VIN
IIN
VOUT
IOUT
Tamb
Tstg
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Current applied to output in Low output state
Operating free-air temperature range
Storage temperature range
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to VCC
40
0 to +70
–65 to +150
UNIT
V
V
mA
V
mA
°C
°C
1989 Aug 14
3
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