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MXL1543 Datasheet

  • MXL1543

  • +5V Multiprotocol, 3Tx/3Rx, Software-Selectable Clock/Data T...

  • 335.91KB

  • 18頁

  • MAXIM   MAXIM

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19-1929; Rev 1; 9/01
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data Transceivers
General Description
The MXL1543 is a three-driver/three-receiver multipro-
tocol transceiver that operates from a +5V single sup-
ply. The MXL1543, along with the MXL1544/MAX3175
and the MXL1344A, form a complete software-selec-
table data terminal equipment (DTE) or data communi-
cation equipment (DCE) interface port that supports the
V.28 (RS-232), V.10/V.11 (RS-449/V.36, EIA-530, EIA-
530A, X.21), and V.35 protocols. The MXL1543 trans-
ceivers carry the high-speed clock and data signals
while the MXL1544/MAX3175 carry the control signals.
The MXL1543 can be terminated by the MXL1344A
software-selectable resistor termination network or by
discrete termination networks.
An internal charge pump and a proprietary low-dropout
transmitter output stage allow V.11- , V.28- , and V.35-
compliant operation from a +5V single supply. A no-
cable mode is entered when all mode pins (M0, M1,
and M2) are pulled high or left unconnected. In no-
cable mode, supply current decreases to 0.5碌A and all
transmitter and receiver outputs are disabled (high
impedance). Short-circuit current limiting and thermal
shutdown circuitry protect the drivers against excessive
power dissipation.
Features
o
MXL1543, MXL1544/MAX3175, and MXL1344A
Chipset Is Pin Compatible with LTC1543,
LTC1544, and LTC1344A
o
Supports RS-232, RS-449, EIA-530, EIA-530A,
V.35, V.36, and X.21
o
Software-Selectable Cable Termination Using the
MXL1344A
o
Complete DTE or DCE Port with MXL1544/
MAX3175, and MXL1344A
o
+5V Single-Supply Operation
o
0.5碌A No-Cable Mode
o
TUV-Certified NET1/NET2 and TBR1/TBR2-
Compliant
MXL1543
Ordering Information
PART
MXL1543CAI
TEMP. RANGE
0擄 to +70擄C
PIN-PACKAGE
28 SSOP
Applications
Data Networking
CSU and DSU
Data Routers
PCI Cards
Telecommunications
Equipment
Pin Configuration appears at end of data sheet.
Typical Operating Circuit
LL
CTS
DSR
DCD
DTR
RTS
RXD
RXC
TXC
SCTE TXD
D4
R4
R3
R2
R1
MXL1544
MAX3175
D3
D2
D1
R3
R2
R1
MXL1543
D3
D2
D1
MXL1344A
18
LL A (141)
13 5 10 8
CTS A (106)
CTS B
DSR A (109)
DSR B
22 6
DCD A (107)
DCD B
23 20 19 4
DTR A (108)
DTR B
RTS A (105)
RTS B
1
SHIELD (101)
7
SG (102)
16 3
RXD A (104)
RXD B
9 17
RXC A (115)
RXC B
12 15 11 24 14 2
TXC A (114)
TXC B
SCTE A (113)
SCTE B
TXD A (103)
TXD B
DB-25 CONNECTOR
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

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