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
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
VCC
VIH
VIL
IIK
IOH
IOL
Tamb
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
Operating free-air temperature range
LIMITS
MIN
NOM
MAX
4.5
5.0
5.5
2.0
0.8
–18
–1
20
0
70
UNIT
V
V
V
mA
mA
mA
°C
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
PARAMETER
TEST CONDITIONSNO TAG
LIMITS
MIN
TYP
NO TAG
MAX
UNIT
VOH
High-level output voltage
VCC = MIN, VIL = MAX,
VIH = MIN, IOH = –MAX
±10%VCC 2.5
±5%VCC 2.7
3.4
V
V
VOL
Low-level output voltage
VCC = MIN, VIL = MAX,
VIH = MIN, IOL =– MAX
±10%VCC
±5%VCC
0.30 0.50
V
0.30 0.50
V
VIK
Input clamp voltage
VCC = MIN, II = IIK
–0.73 –1.2
V
II
Input current at maximum input voltage VCC = MAX, VI = 7.0V
100
µA
IIH
High-level input current
VCC = MAX, VI = 2.7V
20
µA
IIL
Low-level input current
VCC = MAX, VI = 0.5V
IOS
Short-circuit output currentNO TAG
VCC = MAX
–0.6
mA
–60
–150
mA
ICC
Supply current (total)
ICCH
ICCL
VCC = MAX
30
40
mA
32
40
mA
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at VCC = 5V, Tamb = 25°C.
3. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, IOS tests should be performed last.
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
fMAX
tPLH
tPHL
Maximum clock frequency
Propagation delay
CP tp Qn
TEST
CONDITION
Waveform
NO TAG
Waveform
NO TAG
LIMITS
Tamb = +25°C
VCC = +5.0V
CL = 50pF
RL = 500Ω
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF
RL = 500Ω
MIN TYP MAX
MIN
MAX
110
115
105
4.0
5.5
7.5
4.0
9.0
4.5
6.5
8.5
4.5
9.5
UNIT
ns
ns
1989 Aug 14
4
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