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參數資料
| 型號： | MAX3362EKA#TG16 |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 4/14頁 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485/422 SGL SOT23-8 |
| 產品培訓模塊： | 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： | 1/1 |
| 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-23-8 |
| 供應商設備封裝： | SOT-23-8 |
| 包裝： | 標準包裝 |
| 其它名稱： | MAX3362EKA#TG16DKR |
MAX3362
3.3V, High-Speed, RS-485/RS-422 Transceiver in
SOT Package
12
______________________________________________________________________________________
connected to the line and is powered up the driver
must not cause the differential signal to drop below
200mV. Figures 10, 11, and 12 show the results of the
MAX3362 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.
Low-Power Shutdown Mode
Low-power shutdown mode is initiated by bringing both
RE high and DE low. In shutdown, the MAX3362 typi-
cally draws only 1A supply current.
RE and DE may be driven simultaneously; the device is
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 600ns, the device will enter shutdown.
Enable times tPDZH, tPDZL, tPRZH and tPRZL in the
Switching Characteristics table assume the device was
not in a low-power shutdown state. Enable times tPDSH,
tPDSL, tPRSH, and tPRSL assume the device was shut
down. Drivers and receivers take longer to become
enabled from low-power shutdown mode than from
driver/receiver disable mode.
Applications Information
Propagation Delays
Figures 5 and 6 show the typical propagation delays.
Skew time is simply the difference between the low-to-
high and high-to-low propagation delay. Small
driver/receiver skew times help maintain a symmetrical
mark-space ratio (50% duty cycle). Both the receiver
skew time and driver skew time are under 6ns.
256 Transceivers on the Bus
The standard RS-485 receiver input impedance is 12k
Ω
(one-unit load), and a standard driver can drive up to
32 unit loads. The MAX3362 transceiver has a 1/8-unit-
load receiver input impedance (96k
Ω), allowing up to
256 transceivers to be connected in parallel on one
communication line. Any combination of these devices
and/or other RS-485 transceivers with a total of 32 unit
loads or less can be connected to the line.
Driver Output Protection
Two mechanisms prevent excessive output current and
power dissipation caused by faults or by bus con-
tention. 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
Typical Operating Characteristics). The second, a ther-
mal shutdown circuit, forces the driver outputs into a
high-impedance state if the die temperature becomes
excessive.
Typical Applications
The MAX3362 transceiver is designed for bidirectional
data communications on multipoint bus transmission
lines. The
Typical Operating Circuit shows a typical net-
work applications circuit. To minimize reflections, the
line should be terminated at both ends in its character-
istic impedance, and stub lengths off the main line
should be kept as short as possible.
1
μs/div
B
VCC
10mV/div
3.3V
A
A-B
10mV/div
AC-COUPLED
10mV/div
AC-COUPLED
0
Figure 11. Differential Power-Up Glitch (1V/s)
200ns/div
B
VCC
10mV/div
3.3V
A
A-B
50mV/div
AC-COUPLED
50mV/div
AC-COUPLED
0
Figure 12. Differential Power-Up Glitch (10V/s)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX336C/D | 功能描述:多路器開關 IC RoHS:否 制造商:Texas Instruments 通道數量:1 開關數量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MAX336C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX336CAI | 功能描述:多路器開關 IC RoHS:否 制造商:Texas Instruments 通道數量:1 開關數量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MAX336CAI+ | 功能描述:多路器開關 IC 16:1 Low Leakage CMOS MUX RoHS:否 制造商:Texas Instruments 通道數量:1 開關數量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MAX336CAI+T | 功能描述:多路器開關 IC 16:1 Low Leakage CMOS MUX RoHS:否 制造商:Texas Instruments 通道數量:1 開關數量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
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