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MAX3171 Datasheet

  • MAX3171

  • +3.3V Multiprotocol 3Tx/3Rx Software-Selectable Control Tran...

  • Maxim   Maxim

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19-1703; Rev 1; 8/01
+3.3V Multiprotocol 3Tx/3Rx
Software-Selectable Control Transceivers
General Description
The MAX3171/MAX3173 are three-driver/three-receiver
multiprotocol transceivers that operate from a single
+3.3V supply. The MAX3171/MAX3173, along with the
MAX3170 and MAX3172/MAX3174, form a complete
software-selectable data terminal equipment (DTE) or
data communications equipment (DCE) interface port
that supports V.28 (RS-232) and V.10/V.11 (RS-449,
V.36, EIA-530, EIA-530-A, X.21, RS-423) protocols. The
MAX3171/MAX3173 transceivers carry the serial inter-
face control signaling; the MAX3170 transceivers carry
the clock and data signals. The MAX3172/
MAX3174 have an extra transceiver for applications
requiring four transceivers for control signaling.
An internal charge pump and proprietary low-dropout
transmitter output stage allow V.28, V.11, and V.10
compliant operation from a single +3.3V 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 2mA and all
transmitter and receiver outputs are disabled (high
impedance). Short-circuit limiting and thermal-shut-
down circuits protect the drivers against excessive
power dissipation.
The MAX3171 features 10碌s deglitching on the
V.10/V.11/V.28 receiver inputs. The MAX3173 is avail-
able for applications that do not require deglitching on
the serial handshake signals.
These parts require only four surface-mount capacitors
for charge-pump operation in addition to supply
bypassing.
CTS
DSR
DCD
DTR
RTS
LL
Features
o
Industry鈥檚 First +3.3V Multiprotocol Transceiver
o
Certified TBR-1 and TBR-2 Compliant
(NET1 and NET2)
o
Supports V.28 (RS-232) and V.10/V.11 (RS-449,
V.36, EIA-530, EIA-530-A, X.21, RS-423) Protocols
o
3V/5V Logic Compatibility
o
o
o
o
o
Software-Selectable DCE/DTE
True Fail-Safe Receiver Operation
Available in Small 28-Pin SSOP Package
10碌s Receiver Input Deglitching (MAX3171 only)
All Transmitter Outputs Fault Protected to 鹵15V,
Tolerate Cable Miswiring
MAX3171/MAX3173
________________________Applications
Data Networking
CSU and DSU
PCI Cards
Telecommunications
Ordering Information
PART
MAX3171CAI
MAX3173CAI
TEMP. RANGE
0擄C to +70擄C
0擄C to +70擄C
PIN-PACKAGE
28 SSOP
28 SSOP
Data Routers
Pin Configuration appears at end of data sheet
Typical Operating Circuit
RXD
RXC
TXC
SCTE TXD
MAX3171
MAX3173
R3
R2
R1
D3
D2
D1
MAX3172
MAX3174
R3
R2
R1
D3
D2
D1
MAX3170
R4
D4
13 5
CTS B
CTS A
10 8
DSR B
DSR A
22 6
DCD B
DCD A
23 20 19 4
DTR B
DTR A
RTS B
RTS A
1
SHIELD
7
SG
DB-25 CONNECTOR
18
LL A
16 3
9 17
12 15 11 24 14 2
TXC B
TXC A
SCTE B
SCTE A
TXD B
TXD A
________________________________________________________________
Maxim Integrated Products
RXD B
RXD A
RXC B
RXC A
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.

MAX3171 PDF文件相關(guān)型號(hào)

MAX3171CAI,MAX3173,MAX3173CAI

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