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參數(shù)資料
| 型號(hào)： | 933768990602 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 總線收發(fā)器 |
| 英文描述： | F/FAST SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 85K |
| 代理商： | 933768990602 |
Philips Semiconductors
Product specification
74F1244
Octal buffer (3-State)
1989 Apr 04
3
LOGIC DIAGRAM
VCC = Pin 20
Ia0
SF00230
OEa
Ia3
Ia2
Ia1
2
4
6
8
1
Ya0
Ya1
Ya2
Ya3
18
16
14
12
Ib0
Ib1
Ib2
Ib3
OEb
17
15
13
11
19
3
5
7
9
Yb0
Yb1
Yb2
Yb3
GND = Pin 10
FUNCTION TABLE
INPUTS
OUTPUTS
OEa
Ia
OEb
Ib
Ya
Yb
L
H
L
H
X
H
X
Z
H = High voltage level
L
= Low voltage level
X = Don’t care
Z = High impedance “off” state
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit 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
RATING
UNIT
VCC
Supply voltage
–0.5 to +7.0
V
VIN
Input voltage
–0.5 to +7.0
V
IIN
Input current
–30 to +5
mA
VOUT
Voltage applied to output in High output state
–0.5 to VCC
V
IOUT
Current applied to output in Low output state
128
mA
Tamb
Operating free-air temperature range
0 to +70
°C
Tstg
Storage temperature range
–65 to +150
°C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
SYMBOL
PARAMETER
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5.0
5.5
V
VIH
High-level input voltage
2.0
V
VIL
Low-level input voltage
0.8
V
IIK
Input clamp current
–18
mA
IOH
High-level output current
–15
mA
IOL
Low-level output current
64
mA
Tamb
Operating free-air temperature range
0
+70
°C
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