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參數(shù)資料
| 型號(hào)： | 74F640 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal bus transceiver, inverting (3-State)(八通道總線收發(fā)器，反向（三態(tài)）) |
| 中文描述： | 八路總線收發(fā)器，反相（3態(tài)）（八通道總線收發(fā)器，反向（三態(tài)）） |
| 文件頁數(shù)： | 2/11頁 |
| 文件大小： | 85K |
| 代理商： | 74F640 |
Philips Semiconductors
Product specification
74F640
Octal bus transceiver, inverting (3-State)
2
1989 Nov 27
853–0381 98171
FEATURES
High-impedance NPN base inputs for reduced loading
(70
μ
A in High and Low states)
Ideal for applications which require high-output drive and minimal
bus loading
Inverting version of 74F245
Octal bidirectional bus interface
3-State outputs sink 64mA and source 15mA
DESCRIPTION
The 74F640 is an octal transceiver featuring inverting 3-State bus
compatible outputs in both transmit and receive directions. The B
port outputs are capable of sinking 64mA and sourcing 15mA,
providing very good capacitive drive characteristics. The device
features an Output Enable (OE) input for easy cascading and
Transmit/Receiver (T/R) input for direction control. The 3-State
outputs, B0–B7, have been designed to prevent output bus loading if
the power is removed from the device.
PIN CONFIGURATION
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
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL SUPPLY CURRENT
(TOTAL)
74F640
3.5ns
78mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
PKG DWG #
20-pin plastic DIP
N74F640N
SOT146-1
20-pin plastic SOL
N74F640D
SOT163-1
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
3.5/0.115
70
μ
A/70
μ
A
OE
Output Enable input (active Low)
2.0/0.067
40
μ
A/40
μ
A
T/R
Transmit/Receive input
2.0/0.067
40
μ
A/40
μ
A
A0 - A7
A port outputs
150/40
3.0mA/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.
B port outputs
750/106.7
15mA/64mA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F641 | Octal Bus Transceiver with Common Output Enable, Non-Inverting (Open Collector)(帶普通輸出使能的八通道總線收發(fā)器，同相（集電極開路）) |
| 74F642 | Transceivers |
| 74F646SDC | Single 8-bit Bus Transceiver |
| 54F646DMQB | BUS TRANSCEIVER|SINGLE|8-BIT|F-TTL|DIP|24PIN|CERAMIC |
| 54F646FMQB | BUS TRANSCEIVER|SINGLE|8-BIT|F-TTL|FP|24PIN|CERAMIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F640 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74F640N | 制造商:NXP Semiconductors 功能描述:OCTAL BUS TRANSCEIVER 制造商:North American Philips Discrete Products Div 功能描述:Bus Transceiver, Single, 8 Bit, 20 Pin, Plastic, DIP 制造商:NXP Semiconductors 功能描述:Bus Transceiver, Single, 8 Bit, 20 Pin, Plastic, DIP |
| 74F640PC | 功能描述:總線收發(fā)器 Octal Bus Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| 74F640SC | 功能描述:總線收發(fā)器 Octal Bus Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| 74F640SCX | 功能描述:總線收發(fā)器 Octal Bus Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
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