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參數資料
| 型號： | 74ALS645AD |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal transceiver 3-State |
| 中文描述： | ALS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | 7.50 MM, PLASTIC, SOL-20 |
| 文件頁數： | 3/8頁 |
| 文件大?。?/td> | 79K |
| 代理商： | 74ALS645AD |
Philips Semiconductors
Product specification
74ALS645A/74ALS645A-1
Octal transceiver (3-State)
1991 Jun 03
3
LOGIC DIAGRAM
SF00201
18
B0
17
B1
16
B2
15
B3
14
B4
13
B5
12
B6
11
B7
A0
A1
A2
A3
A4
A5
A6
A7
2
3
4
5
6
7
8
9
19
1
OE
T/R
V
= Pin 20
GND = Pin 10
FUNCTION TABLE
INPUTS
OUTPUTS
OE
T/R
L
L
Bus B data to Bus A
L
H
Bus A data to Bus B
H
X
Z
H =
L
X =
Z =
High voltage level
Low voltage level
Don’t care
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
V
CC
V
IN
I
IN
V
OUT
Supply voltage
–0.5 to +7.0
V
Input voltage
–0.5 to +7.0
V
Input current
–30 to +5
mA
Voltage applied to output in High output state
–0.5 to V
CC
48
V
I
OUT
Current applied to output in Low output state
All versions
mA
-1 version
96
mA
°
C
°
C
T
amb
T
stg
Operating free-air temperature range
0 to +70
Storage temperature range
–65 to +150
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
NOM
UNIT
MIN
MAX
V
CC
V
IH
V
IL
I
IK
I
OH
Supply voltage
4.5
5.0
5.5
V
High-level input voltage
2.0
V
Low-level input voltage
0.8
V
Input clamp current
–18
mA
High-level output current
–15
mA
I
OL
Low level output current
Low-level output current
All versions
24
48
1
mA
-1 version
mA
T
amb
Operating free-air temperature range
0
+70
°
C
NOTES:
1. The 48mA limit applies only under the condition of V
CC
= 5.0V
±
5%.
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