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參數(shù)資料
| 型號： | 74F642 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Transceivers |
| 中文描述： | 收發(fā)器 |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 92K |
| 代理商： | 74F642 |
Philips Semiconductors
Product specification
74F641/
74F642*
Transceivers
74F641 Octal Bus Transceiver with Common Output Enable, Non-Inverting (Open Collector)
74F642 Octal Bus Transceiver with Common Output Enable, Inverting (Open Collector)
2
1999 Jan 08
853–0382 20616
* Discontinued part. Please see the Discontinued Products List.
FEATURES
High-impedance NPN base inputs for reduced loading
(20
μ
A in High and Low states)
Octal bidirectional bus interface
Common Output Enable for both Transmit and Receive modes
Open collector outputs sink 64mA
—74F641, non-inverting
—74F642, inverting
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
PKG DWG #
20-pin plastic DIP
N74F641N
SOT146-1
20-pin plastic SOL
N74F641D
SOT163-1
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL SUPPLY CURRENT
(TOTAL)
74F641
8.0ns
69mA
74F642
8.5ns
52mA
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F(U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
A0 - A7, B0 - B7
Data inputs
1.0/0.033
20
μ
A/20
μ
A
T/R
Transmit/Receive input
2.0/0.067
40
μ
A/40
μ
A
OE
Output Enable inputs
2.0/0.067
40
μ
A/40
μ
A
A0 - A7
Data outputs
OC/40
OC/24mA
B0 - B7
NOTE:
One (1.0) FAST unit load is defined as: 20
μ
A in the High state and 0.6mA in the Low state. OC = Open Collector.
Data outputs
OC/106.7
OC/64mA
PIN CONFIGURATION – 74F641
SF00198
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
T/R
A0
A1
A2
A3
A4
A5
A6
A7
GND
V
CC
OE
B0
B1
B2
B3
B4
B6
B5
B7
PIN CONFIGURATION – 74F642
SF00198
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
T/R
A0
A1
A2
A3
A4
A5
A6
A7
GND
V
CC
OE
B0
B1
B2
B3
B4
B6
B5
B7
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F643PC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Inverting/Non-Inverting Bus Trasceiver |
| 74F643PCQR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Inverting/Non-Inverting Bus Trasceiver |
| 74F643SC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Inverting/Non-Inverting Bus Trasceiver |
| 74F645 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal Bus Transceiver with 3-STATE Outputs |
| 74F645 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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