參數(shù)資料
型號(hào)： MAX14780EESA+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 4/14頁(yè)
文件大小： 0K
描述： TRANSCEIVER RS-485/RS-422 8SO
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
系列： *
12
Maxim Integrated
+5.0V, ±30kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceiver
MAX14780E
Applications Information
The standard RS-485 receiver input impedance is 12kΩ
(1-unit load), and the standard driver can drive up
to 32-unit loads. The MAX14780E has a 1/8-unit load
receiver input impedance (96kΩ), allowing up to 256
transceivers to be connected in parallel on one commu-
nication line. Any combination of the MAX14780E, as well
as other RS-485 transceivers with a total of 32-unit loads
or fewer, can be connected to the line.
Reduced EMI and Reflections
The MAX14780E features reduced slew-rate drivers that
minimize EMI and reduce reflections caused by improp-
erly terminated cables, allowing error-free data transmis-
sion up to 500kbps.
Low-Power Shutdown Mode
Low-power shutdown mode is initiated by bringing both
RE high and DE low. In shutdown, the devices typically
draw only 2.8μA of supply current.
RE and DE can be driven simultaneously; the devices
are guaranteed not to enter shutdown if RE is high and
DE is low for less than 50ns. If the inputs are in this state
for at least 700ns, the devices are guaranteed to enter
shutdown.
Enable times tZH and tZL (see the Switching
Characteristics section) assume the devices were not in
a low-power shutdown state. Enable times tZH(SHDN) and
tZL(SHDN) assume the devices were in shutdown state.
It takes drivers and receivers longer to become enabled
from low-power shutdown mode (tZH(SHDN), tZL(SHDN))
than from driver/receiver-disable mode (tZH, tZL).
Driver Output Protection
Two mechanisms prevent excessive output current and
power dissipation caused by faults or by bus conten-
tion. The first, a foldback current limit on the output
stage, provides immediate protection against short cir-
cuits over the whole common-mode voltage range (see
the Typical Operating Characteristics). The second, a
thermal-shutdown circuit, forces the driver outputs into
a high-impedance state if the die temperature exceeds
+175°C (typ).
Line Length
The RS-485/RS-422 standard covers line lengths up to
4000ft. For line lengths greater than 4000ft, it may be
necessary to implement a line repeater.
Figure 10c. IEC 61000-4-2 ESD Test Model
Figure 10d. IEC 61000-4-2 ESD Generator Current Waveform
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
RC
50M
TO 100M
RD
330
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
tr = 0.7ns TO 1ns
30ns
60ns
t
100%
90%
10%
I PEAK
I
相關(guān)PDF資料
PDF描述
MAX14801CCM+T IC SWITCH SPST 48LQFP
MAX14806CCM+T IC MUX DUAL 8CH HV 48LQFP
MAX1480CEPI+ IC INTERFACE RS485/RS422 28-DIP
MAX1480ECEPI+ IC RS485/RS422 DATA INTRFC 28DIP
MAX14820ETG+ IC IO-LINK TXRX 24TQFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX14783EASA+ 制造商:Maxim Integrated Products 功能描述:HALF DUPLEX, DUAL VOLTAGE (3V TO 5.5V), HIGH ESD HBM (+/-35K - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC TXRX RS485/422 ESD 8SO
MAX14783EASA+T 制造商:Maxim Integrated Products 功能描述:HALF DUPLEX, DUAL VOLTAGE (3V TO 5.5V), HIGH ESD HBM (+/-35K - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TXRX RS485/422 ESD 8SO
MAX14783EATA+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX14783EATA+T 制造商:Maxim Integrated Products 功能描述:HALF DUPLEX, DUAL VOLTAGE (3V TO 5.5V), HIGH ESD HBM (+/-35K - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TXRX RS485/422 ESD 8TDFN
MAX14783EAUA+ 制造商:Maxim Integrated Products 功能描述:HALF DUPLEX, DUAL VOLTAGE (3V TO 5.5V), HIGH ESD HBM (+/-35K - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC TXRX RS485/422 ESD 8UMAX
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*