74F2952 データシートの表示（PDF） - Philips Electronics
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74F2952 Datasheet PDF : 14 Pages
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Philips Semiconductors
Transceivers
Product specification
74F2952, 74F2953
FUNCTION TABLE for Register An or Bn
INPUTS
An or Bn CPXX
INTERNAL
CEXX
Q
OPERATING
MODE
X
X
H
NC
Hold data
L
↑
L
L
H
↑
L
H
H=
L=
↑=
X=
XX =
NC =
High voltage level
Low voltage level
Low-to-High transition
Don’t Care
AB or BA
No Change
Load data
FUNCTION TABLE for Output Enable
INPUTS INTERNAL An or Bn OUTPUTS
OEXX
Q
74F2952 74F2953
OPERATING
MODE
H
X
Z
Z
Disable outputs
L
L
L
L
H
H
H=
L=
X=
XX =
Z=
High voltage level
Low voltage level
Don’t Care
AB or BA
High impedance “off” state
H
Enable outputs
L
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
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Current applied to output in Low output state
A0 – A7
B0 – B7
Tamb
Tstg
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 +5.5
48
128
0 to +70
–65 to +150
UNIT
V
V
mA
V
mA
mA
°C
°C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
VCC
Supply voltage
VIH
High-level input voltage
VIL
Low-level input voltage
IIK
Input clamp current
IOH
High-level output current
IOL
Tamb
Low-level output current
Operating free-air temperature range
A0 – A7
B0 – B7
A0 – A7
B0 – B7
LIMITS
MIN
NOM
MAX
4.5
5.0
5.5
2.0
0.8
–18
–3
–15
24
64
0
+70
UNIT
V
V
V
mA
mA
mA
mA
mA
°C
1989 Sep 22
6
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