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參數(shù)資料
| 型號(hào)： | 7HCT1284D |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通用總線功能 |
| 英文描述： | Parallel printer interface transceiver/buffer |
| 中文描述： | QUAD LINE TRANSCEIVER, PDSO20 |
| 封裝： | 7.50 MM, PLASTIC, SOL-20 |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大?。?/td> | 138K |
| 代理商： | 7HCT1284D |
Philips Semiconductors
Product specification
74HCT1284
Parallel printer interface transceiver/buffer
1998 Jul 10
3
LOGIC SYMBOL
DIR
HD
Y7
A7
A
Y
Y6
A6
A
Y
Y5
A5
A
Y
B4
A4
A
B
A
B
B2
A2
A
B
A
B
B3
A3
B1
A1
SK00009
FUNCTION TABLE
INPUTS
OUTPUTS
INPUTS/OUTPUTS
DIR
HD
A5-7
Y5-7
A1-4
B1-4
L
L
L
L
A = B
Inputs
L
L
H
Z
A = B
Inputs
L
H
L
L
A = B
Inputs
L
H
H
H
A = B
Inputs
H
L
L
L
Inputs Low
Outputs Low
H
L
H
Z
Inputs High
Outputs Z
H
H
L
L
Inputs
B = A
H
H
H
H
Inputs
B = A
H = High Voltage
L = Low Voltage
Z = High Impedance, Off-State
ABSOLUTE MAXIMUM RATINGS
1, 2
SYMBOL
PARAMETER
CONDITIONS
RATING
UNIT
V
CC
DC supply voltage
–0.5 to +6.5
V
I
IK
DC input diode current
V
I
< 0
±
20
mA
V
I
DC input voltage
3
–2 to +7.0
V
I
OK
DC output diode current
V
O
< 0
±
50
mA
V
OUT
DC output voltage
3
Output in Off or High state
–0.5 to +5.5
V
I
OUT
DC output current
Output in Low state
±
50
mA
T
stg
Storage temperature range
–65 to 150
°
C
I
CC
/I
GND
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150
°
C.
3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
Continuous current through V
CC
or GND
±
200
mA
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
MIN
MAX
V
CC
DC supply voltage
4.7
5.5
V
V
I
Input voltage
0
V
CC
V
V
IH
High-level input voltage
2.0
V
V
IL
Low-level Input voltage
0.8
V
I
OH
High-level output current
–14
mA
I
OL
Low-level output current
14
mA
T
amb
Operating free-air temperature range
0
+70
°
C
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