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參數資料
| 型號： | 74VHC245M |
| 廠商： | 意法半導體 |
| 元件分類： | 通用總線功能 |
| 英文描述： | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
| 中文描述： | 八路總線收發器三態 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 66K |
| 代理商： | 74VHC245M |
74VHC245
OCTAL BUS
TRANSCEIVER (3-STATE)
PRELIMINARY DATA
June 1999
ORDER CODES :
74VHC245M
74VHC245T
M
(Micro Package)
I
HIGHSPEED:t
PD
=4.0ns(TYP.)atV
CC
= 5V
I
LOWPOWERDISSIPATION:
I
CC
=4
μ
A(MAX.) at T
A
=25
o
C
I
HIGHNOISEIMMUNITY:
V
NIH
= V
NIL
=28%V
CC
(MIN.)
I
POWERDOWN PROTECTIONON CONTROL
INPUTS
I
SYMMETRICALOUTPUTIMPEDANCE:
|I
OH
| = I
OL
= 8 mA(MIN)
I
BALANCEDPROPAGATIONDELAYS:
t
PLH
t
PHL
I
OPERATINGVOLTAGERANGE:
V
CC
(OPR)= 2Vto 5.5V
I
PINANDFUNCTION COMPATIBLEWITH
74SERIES245
I
IMPROVEDLATCH-UP IMMUNITY
I
LOWNOISEV
OLP
= 0.9V(Max.)
DESCRIPTION
The 74VHC245 is an advanced high-speed
CMOS OCTAL BUS TRANSCEIVER (3-STATE)
fabricated with sub-micron silicon gate
double-layermetal wiring C
2
MOS technology.
This IC is intended for two-way asynchronous
communication
between
direction of data trasmission is determined by the
level of the DIR input. The enable input G can be
and
data
busses;
the
T
(TSSOPPackage)
used to disable the device so that the busses are
effectivelyisolated.
All
inputs
and
outputs are
protection circuits against static discharge, giving
them 2kV ESD immunity and transient excess
voltage.
IT IS PROHIBITED TO APPLY A SIGNAL TO A
TERMINAL WHEN IT IS IN OUTPUT MODE
AND WHEN A BUS TERMINAL IS FLOATING
(HIGH IMPEDANCE STATE) IT IS REQUESTED
TO FIX THE INPUT LEVEL BY MEANS OF
EXTERNAL
PULL
DOWN
RESISTOR.
equipped with
OR
PULL
UP
PIN CONNECTION AND IEC LOGIC SYMBOLS
1/8
相關PDF資料 |
PDF描述 |
|---|---|
| 74VHC245 | Octal Bus Transceiver (3-State)(八總線收發器) |
| 74VHC257 | QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| 74VHC257M | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
| 74VHC257T | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
| 74VHC273 | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 74VHC245M | 制造商:Fairchild Semiconductor Corporation 功能描述:74VHC CMOS SMD 74VHC245 SOIC20 |
| 74VHC245M_Q | 功能描述:總線收發器 Octal Bidir 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 |
| 74VHC245MSC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single 8-bit Bus Transceiver |
| 74VHC245MTC | 功能描述:總線收發器 Octal Bidir 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 |
| 74VHC245MTC_Q | 功能描述:總線收發器 Octal Bidir 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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