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参数资料
| 型号： | M54HC7640 |
| 厂商： | 意法半导体 |
| 英文描述： | Octal Bus Transceiver(八总线收发器) |
| 中文描述： | 八路总线收发器（八总线收发器） |
| 文件页数： | 1/10页 |
| 文件大小： | 256K |
| 代理商： | M54HC7640 |
M54HC7245/7640/7643/7645
M74HC7245/7640/7643/7645
January 1994
HC7640INVERTING,HC7643INVERTING/NONINVERTING
.
HIGH SPEED
t
PD
= 12 ns(TYP.) at V
CC
= 5V
.
LOWPOWER DISSIPATION
I
CC
= 4
μ
A(MAX.) at T
A
= 25
o
C
.
HIGH NOISE IMMUNITY
V
H
= 1.1 (TYP.) at V
CC
= 5V
.
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
|I
OH
| = I
OL
= 6 mA (MIN)
.
BALANCEDPROPAGATION DELAYS
t
PLH
= t
PHL
.
WIDE OPERATING RANGE
V
CC
(OPR) = 2V to 6V
.
PIN ANDFUNCTION COMPATIBLE
WITH 54/74LS245/640/643
OCTALBUSTRANSCEIVER(3-STATE):HC7645NONINVERTING
B1R
(Plastic Package)
ORDER CODES :
M54HCXXXXF1R
M74HCXXXXB1R
M74HCXXXXM1R
M74HCXXXXC1R
F1R
(CeramicPackage)
M1R
(MicroPackage)
C1R
(Chip Carrier)
PIN CONNECTION
(top view)
DESCRIPTION
TheM54/74HC7245 HC7640,HC7643 andHC7645
utilise silicon gate C
2
MOS technology to achive
operating speeds equivalent to LSTTL devices.
Along with the low power dissipation and high noise
immunity of standads C
2
MOS integrated circuit, it
possesses the capability to drive 15 LSTTL loads.
These IC’s are intended for two-way asynchronous
communication between data buses, and the
direction of data trasmission is determined by DIR
input.Theenableinput(G)canbeusedtodisablethe
device so that the buses are effectively isolated.
The HC7245/640/7643/7645 have the same pin
configuration and function as the HC245/640/643
and they have a hysteresis characteristics with each
input, so HC7245/7640/7643/7645 can beusedas a
line receiver, etc. All input are equipped with
protection circuits against static discharge and
transient excess voltage.
ITISPROHIBITEDTOAPPLYASIGNALTOABUS
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
PULLDOWN ORPULL UP RESISTOR.
HC7640
HC7643
HC7645/HC7245
HC7245 iselectrically andfuncutionally the same as theHC7645
1/10
相关PDF资料 |
PDF描述 |
|---|---|
| M54HC7643 | Octal Bus Transceiver(八总线收发器) |
| M54HC7645 | Octal Bus Transceiver(八总线收发器) |
| M54HC76 | Dual D Type Flip Flop with Preset and Clear(带复位和清除的双D触发器) |
| M54HCT139 | Dual 2 to 4 Decoder/Demultiplexer(双2-4线译码器/多路分解器) |
| M54HCT14 | Hex Schmitt Inverter(六施密特反相器) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M54HC86K | 制造商:STMicroelectronics 功能描述: |
| M54HCT244K | 制造商:STMicroelectronics 功能描述:BFFR/LINE DRVR OCTAL NON-INV 3-ST CMOS 20PIN FPC - Bulk 制造商:STMicroelectronics 功能描述:LOGIC, 5VOLTSOCTAL BUFFEROCTAL BUS BUFFER, 3-STATE FLAT-20 - Bulk |
| M54HCT244K1 | 制造商:STMicroelectronics 功能描述: |
| M54HCT245K | 制造商:STMicroelectronics 功能描述:LOGIC, 5VOLTSOCTAL BUSOCTAL BUS TRANSCEIVER - 3-STATEFLAT-20 - Bulk |
| M54HCU04D | 制造商:STMicroelectronics 功能描述:LOGIC, 5VOLTSGATESHEX INVERTER, UNBUFFERIZEDDIL-14 SOLDER DI - Bulk |
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