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參數(shù)資料
| 型號(hào)： | 74VHC245T |
| 廠商： | 意法半導(dǎo)體 |
| 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(fā)器三態(tài) |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 66K |
| 代理商： | 74VHC245T |
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(guān)PDF資料 |
PDF描述 |
|---|---|
| 74VHC245M | Quadruple 2-Input Positive-AND Gates 14-SOIC -40 to 85 |
| 74VHC245 | Octal Bus Transceiver (3-State)(八總線收發(fā)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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74VHC245TTR | 功能描述:總線收發(fā)器 Octal Bus Tranceiver 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 |
| 74VHC257 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| 74VHC257 WAF | 制造商:Texas Instruments 功能描述: |
| 74VHC257M | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| 74VHC257MTC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
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