參數(shù)資料
型號： MAX3293AUT+T
廠商： Maxim Integrated Products
文件頁數(shù)： 11/11頁
文件大?。?/td> 0K
描述： IC TX RS485/422 DIFF SGL SOT23-6
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 1
類型： 收發(fā)器
驅動器/接收器數(shù)： 1/0
規(guī)程： RS422，RS485
電源電壓： 3.14 V ~ 3.47 V
安裝類型： 表面貼裝
封裝/外殼： SOT-23-6
供應商設備封裝： SOT-6
包裝： 標準包裝
其它名稱： MAX3293AUT+TDKR
MAX3293/MAX3294/MAX3295
20Mbps, +3.3V, SOT23 RS-485/
RS-422 Transmitters
_______________________________________________________________________________________
9
Hot-Swap Input Circuitry
The MAX3293/MAX3294/MAX3295 enable input fea-
tures hot-swap capability. At the input, there are two
NMOS devices, M1 and M2 (Figure 6). When VCC
ramps from zero, an internal 10s timer turns on M2
and sets the SR latch, which also turns on M1.
Transistors M2, a 2mA current sink, and M1, a 100A
current sink, pull DE to GND through a 5.6k
Ω resistor.
M2 is designed to pull DE to the disabled state against
an external parasitic capacitance up to 100pF that may
drive DE high. After 10s, the timer deactivates M2
while M1 remains on, holding DE low against three-
state leakages that can drive DE high. M1 remains on
until an external source overcomes the required input
current. At this time, the SR latch resets and M1 turns
off. When M1 turns off, DE reverts to a standard, high-
impedance CMOS input. Whenever VCC drops below
1V, the hot-swap input is reset.
Hot-Swap Line Transient
During a hot-swap event when the driver is connected to
the line and is powered up, the driver must not cause the
differential signal to drop below 200mV. Figures 7, 8, and
9 show the results of the MAX3295 during power-up for
three different VCC ramp rates (0.1V/s, 1V/s, and
10V/s). The photos show the VCC ramp, the single-
ended signal on each side of the 100
Ω termination, as
well as the differential signal across the termination.
ESD Protection
Human Body Model
Figure 10 shows the Human Body Model, and Figure 11
shows the current waveform it generates when dis-
charged into low impedance. This model consists of a
100pF capacitor charged to the ESD voltage of interest,
which is then discharged into the device through a
1.5k
Ω resistor.
Figure 8. Differential Power-Up Glitch (1V/s)
Figure 9. Differential Power-Up Glitch (10V/s)
Figure 11. Current Waveform
DIFFERENTIAL POWER-UP GLITCH
(10V/
μs)
200ns/div
2V/div
VCC
Y
Z
Y-Z
0V
50mV/div
AC-COUPLED
50mV/div
AC-COUPLED
100mV/div
DIFFERENTIAL POWER-UP GLITCH
(1V/
μs)
1
μs/div
2V/div
VCC
Y
Z
Y-Z
0V
100mV/div
AC-COUPLED
100mV/div
AC-COUPLED
200mV/div
Figure 10. Human Body ESD Test
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
RC
1M
Ω
RD
1.5k
Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
IP 100%
90%
36.8%
tRL
TIME
tDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0V
AMPERES
相關PDF資料
PDF描述
MAX966ESA+T IC COMPARATOR R-R 8-SOIC
MAX965ESA+T IC COMPARATOR R-R 8-SOIC
AD1674KRZ IC ADC 12BIT 100KSPS 28-SOIC
MAX965EUA+T IC COMPARATOR R-R 8-UMAX
MAX972ESA IC COMP DUAL OPEN DRAIN LP 8SOIC
相關代理商/技術參數(shù)
參數(shù)描述
MAX3294AUT 制造商:Maxim Integrated Products 功能描述:20MBPS +3.3V SOT23 RS-485/RS-422 - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:
MAX3294AUT+ 制造商:Maxim Integrated Products 功能描述:LINE TRANSMITTER 1TX 6PIN SOT-23 - Rail/Tube
MAX3294AUT+T 功能描述:RS-422/RS-485 接口 IC 20Mbps 3.3V Transmitter RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube
MAX3294AUT+TCGD 制造商:Maxim Integrated Products 功能描述:20MBPS, +3.3V, SOT23 RS-485/RS-422 TRANSMITTERS - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TX RS485/422 DIFF SGL SOT23
MAX3294AUT-T 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*