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參數(shù)資料
| 型號(hào)： | MAX3170 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | +3.3V, Multiprotocol, 3 Tx/3 Rx, Software-Selectable Clock/Data Transceiver(+3.3V,多協(xié)議,3Tx/3Rx,軟件可編程時(shí)鐘/數(shù)據(jù)收發(fā)器) |
| 中文描述： | +3.3V、多協(xié)議、3 Tx/3 Rx、軟件可選的時(shí)鐘/數(shù)據(jù)收發(fā)器 |
| 文件頁(yè)數(shù)： | 9/16頁(yè) |
| 文件大小： | 344K |
| 代理商： | MAX3170 |
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Mode Selection
The state of the mode select pins M0, M1, and M2
determines which serial interface protocol is selected
(Table 1). The state of the DCE/
DTE
input determines
whether the transceiver will be configured as a DTE or
a DCE serial port. When the DCE/
DTE
input is logic
HIGH, driver T3 is activated and receiver R1 is dis-
abled. When the DCE/
DTE
input is logic LOW, driver T3
is disabled and receiver R1 is activated. M0, M1, M2,
and DCE/
DTE
are internally pulled up to V
CC
to ensure
a logic HIGH if left unconnected.
The MAX3170
’
s mode can be selected through soft-
ware control of the M0, M1, M2, and DCE/
DTE
inputs.
Alternatively, the mode can be selected by shorting the
appropriate combination of mode control inputs to
GND. The inputs left floating will be internally pulled up
to V
CC
(logic HIGH). If the M0, M1, and M2 mode
inputs are all unconnected, the MAX3170 will enter no-
cable mode and the supply current will drop to 1mA.
No-Cable Mode
The MAX3170 will enter no-cable mode when the mode
select pins are left unconnected or tied high (M0 = M1
= M2 = 1). In this mode, the multiprotocol drivers and
receivers are disabled and the supply current drops to
1mA. The receiver outputs enter a high-impedance
state in no-cable mode, which allows these output lines
to be shared with other receivers (the receiver outputs
have an internal pull-up resistor to pull the outputs
HIGH if not driven). Also, in no-cable mode, the trans-
mitter outputs enter a high-impedance state so that
these output lines can be shared with other devices.
Dual Charge-Pump Voltage Converter
The MAX3170
’
s internal power supply consists of a reg-
ulated dual charge pump that provides positive and
negative output voltages from a +3.3V supply. The
charge pump operates in discontinuous mode: if the
output voltage is less than the regulated voltage, the
charge pump is enabled; if the output voltage exceeds
the regulated voltage, the charge pump is disabled.
Each charge pump requires a flying capacitor (C1, C2)
and a reservoir capacitor (C3, C4) to generate the V+
and V- supplies. See Figure 6 for charge-pump con-
nections.
Fail-Safe Receivers
The MAX3170 guarantees a logic-high receiver output
when the receiver inputs are shorted or open, or when
they are connected to a terminated transmission line
with all drivers disabled. This is done by setting the
M
+3.3V, Multiprotocol, 3 Tx/3 Rx, Software-
Selectable Clock/Data Transceiver
_______________________________________________________________________________________
9
Table 1. Mode Selection
LOGIC INPUTS
M1
M0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
TRANSMITTERS
T2
V.11
V.11
V.11
V.11
V.11
V.11
V.11
V.11
V.35
V.35
V.11
V.11
V.28
V.28
Z
V.11
V.11
V.11
V.11
V.11
V.11
V.11
V.11
V.35
V.35
V.11
V.11
V.28
V.28
Z
RECEIVERS
R2
V.11
V.11
V.11
V.11
V.35
V.11
V.28
Z
V.11
V.11
V.11
V.11
V.35
V.11
V.28
Z
PROTOCOL
M2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
DCE/
DTE
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
T1
T3
Z
Z
Z
Z
Z
Z
Z
Z
V.11
V.11
V.11
V.11
V.35
V.11
V.28
Z
R1
V.11
V.11
V.11
V.11
V.35
V.11
V.28
Z
Z
Z
Z
Z
Z
Z
Z
Z
R3
V.11
V.11
V.11
V.11
V.35
V.11
V.28
Z
V.11
V.11
V.11
V.11
V.35
V.11
V.28
Z
V.11
RS-530A
RS-530
X.21
V.35
RS-449/V.36
V.28/RS-232
No cable
V.11
RS-530A
RS-530
X.21
V.35
RS-449/V.36
V.28/RS-232
No cable
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Z
Z
Z = High impedance
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| MAX3170CAI | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3170CAI+ | 功能描述:接口 - 專用 3.3V 3Tx/3Rx Tcvr Multiprotocol RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
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| MAX3170CAI-T | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3170EVKIT | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
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