參數(shù)資料
型號(hào)： M54HC245
廠(chǎng)商： 意法半導(dǎo)體
英文描述： Octal Bus Transceiver(八總線(xiàn)收發(fā)器(三態(tài)反相))
中文描述： 八路總線(xiàn)收發(fā)器（八總線(xiàn)收發(fā)器（三態(tài)反相））
文件頁(yè)數(shù)： 1/11頁(yè)
文件大小： 266K
代理商： M54HC245
M54/74HC245/640/643
M54/74HC245/640/643
October 1993
HC640 INVERTING, HC643 INVERTING/NON INVERTING
.
HIGH SPEED
t
PD
= 10 ns(TYP.) at V
CC
= 5V
.
LOWPOWER DISSIPATION
I
CC
= 4
μ
A(MAX.) at T
A
= 25
o
C
.
HIGH NOISE IMMUNITY
V
NIH
= V
INL
= 28 % V
CC
(MIN.)
.
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
|I
OH
| = I
OL
= 6 mA (MIN)
.
BALANCEDPROPAGATION DELAYS
t
PLH
= t
PHL
.
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2 V TO6 V
.
PIN ANDFUNCTION COMPATIBLE
WITH 54/74LS245/640/643
OCTALBUS TRANSCEIVER (3-STATE):HC245 NONINVERTING
B1R
(Plastic Package)
ORDER CODES :
M54HCXXXF1R
M74HCXXXB1R
M74HCXXXM1R
M74HCXXXC1R
F1R
(CeramicPackage)
M1R
(MicroPackage)
C1R
(Chip Carrier)
PIN CONNECTION
(top view)
DESCRIPTION
The M54/74HC245, HC640 and HC643 utilise
silicon gate C2MOStechnology to achive operating
speedsequivalent to LSTTL devices.
Alongwith the lowpower dissipation and high noise
immunity of standards C
2
MOS integrated circuit, it
possesses the capability to drive 15 LSTTL loads.
These IC’s are intended fortwo-way asynchronous
communication between data buses, and the
direction of data trasmission is determined by DIR
input. The enable input (G) can be used to disable
the device so thatthe busesare effectively isolated.
All input are equipped with protection circuits
against staticdischarge andtransientdischarge and
transient excess voltage.
IT IS PROHIBITED TO APPLY A SIGNAL TO A
BUS TERMINAL WHEN IT IS IN OUTPUT MODE
AND WHEN A BUS THERMINAL IS FLOATING
(HIGH IMPEDANCE STATE), IT IS REQUESTED
TO FIX THE INPUT LEVEL BY MEANS OF
EXTERNAL
PULL
DOWN
RESISTOR.
OR
PULL
UP
HC245
HC640
HC643
1/11
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M54HC245_04 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:RAD-HARD OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED)
M54HC245B1R 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:OCTAL BUS TRANSCEIVER 3-STATE: HC245 NON INVERTING HC640 INVERTING, HC643 INVERTING/NON INVERTING
M54HC245C1R 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:OCTAL BUS TRANSCEIVER 3-STATE: HC245 NON INVERTING HC640 INVERTING, HC643 INVERTING/NON INVERTING
M54HC245D 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:RAD-HARD OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED)
M54HC245D1 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:RAD-HARD OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED)
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