MAX3173CAI-T Maxim Integrated, MAX3173CAI-T Datasheet

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MAX3173CAI-T

Manufacturer Part Number
MAX3173CAI-T
Description
RS-232 Interface IC
Manufacturer
Maxim Integrated
Series
MAX3171, MAX3173r
Datasheet
1.MAX3173CAI-T.pdf (15 pages)

Specifications of MAX3173CAI-T

Data Rate
240 Kbps
Operating Supply Voltage
3.3 V
Supply Current
23 mA
Operating Temperature Range
0 C to + 70 C
Mounting Style
SMD/SMT
Number Of Drivers
3
Number Of Receivers
3
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 10µs 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.
19-1703; Rev 1; 8/01
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX3171
MAX3173
Software-Selectable Control Transceivers
________________________________________________________________ Maxim Integrated Products
CTS
13 5
R3
DSR
General Description
10 8
R2
R1
DCD
D3
22 6
DTR
D2
23 20 19 4
RTS
D1
+3.3V Multiprotocol 3Tx/3Rx
LL
1
MAX3172
MAX3174
7
DB-25 CONNECTOR
R4
D4
o Industry’s First +3.3V Multiprotocol Transceiver
o Certified TBR-1 and TBR-2 Compliant
o Supports V.28 (RS-232) and V.10/V.11 (RS-449,
o 3V/5V Logic Compatibility
o Software-Selectable DCE/DTE
o True Fail-Safe Receiver Operation
o Available in Small 28-Pin SSOP Package
o 10µs Receiver Input Deglitching (MAX3171 only)
o All Transmitter Outputs Fault Protected to ±15V,
________________________Applications
Pin Configuration appears at end of data sheet
MAX3171CAI
MAX3173CAI
(NET1 and NET2)
V.36, EIA-530, EIA-530-A, X.21, RS-423) Protocols
Tolerate Cable Miswiring
Data Networking
CSU and DSU
Data Routers
PART
18
RXD
16
R3
Typical Operating Circuit
3
RXC
R2
9 17
TEMP. RANGE
Ordering Information
0°C to +70°C
0°C to +70°C
R1
PCI Cards
Telecommunications
TXC SCTE
D3
12 15 11 24 14 2
D2
TXD
D1
Features
PIN-PACKAGE
28 SSOP
28 SSOP
MAX3170
1

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MAX3173CAI-T Summary of contents

Page 1

... Available in Small 28-Pin SSOP Package o 10µs Receiver Input Deglitching (MAX3171 only) o All Transmitter Outputs Fault Protected to ±15V, Tolerate Cable Miswiring ________________________Applications Data Networking CSU and DSU PART MAX3171CAI MAX3173CAI Data Routers Pin Configuration appears at end of data sheet DTR RTS MAX3172 ...

Page 2

... T_OUT_...............................................................-15V to +15V Short-Circuit Duration ........................................................60s Receiver Inputs R_IN_ ..................................................................-15V to +15V Continuous Power Dissipation (T 28-Pin SSOP (derate 11.1mW/°C above +70°C) ........889mW Operating Temperature Range MAX3171CAI/MAX3173CAI ...............................0°C to +70°C + 0.3V) Storage Temperature Range ............................-65°C to +150°C CC Lead Temperature (soldering, 10s) ................................+300° ...

Page 3

Software-Selectable Control Transceivers ELECTRICAL CHARACTERISTICS (continued 3.3V ±5 1µ 3.3µF, and T CC PARAMETER SYMBOL LOGIC OUTPUTS (R_OUT) Output High Voltage Output Low Voltage Rise or Fall Time ...

Page 4

Multiprotocol 3Tx/3Rx Software-Selectable Control Transceivers ELECTRICAL CHARACTERISTICS (continued 3.3V ±5 1µ 3.3µF, and +3.3V +25°C.) (Note 2) A PARAMETER SYMBOL Receiver Input ...

Page 5

Software-Selectable Control Transceivers (V = +3.3V 1.0µ 3.3µ V.10/V.11 MODE SUPPLY CURRENT vs. DATA RATE 250 FULL LOAD 200 150 100 50 NO LOAD 0 0.001 0.01 0.1 ...

Page 6

Multiprotocol 3Tx/3Rx Software-Selectable Control Transceivers (V = +3.3V 1.0µ 3.3µ MAX3173 LOOPBACK SCOPE PHOTO V.11 MODE (UNLOADED) ROUT TOUT/ RIN TIN 10µs/div Figure ...

Page 7

Software-Selectable Control Transceiver Figure 3. V.10/V.28 Driver Test Circuit PIN NAME Positive Supply Generated by the Charge Pump (connect to V+ pin of MAX3172/MAX3174 Bypass V+ to ground with a 3.3µF ceramic capacitor. Positive Terminal ...

Page 8

Multiprotocol 3Tx/3Rx Software-Selectable Control Transceivers Table 1. Mode Selection PROTOCOL M2 V.11 0 RS-530A 0 RS-530 0 X.21 0 V.35 1 RS-449/V.36 1 V.28/RS-232 1 No cable 1 V.11 0 RS-530A 0 RS-530 0 X.21 0 V.35 1 RS-449/V.36 ...

Page 9

Software-Selectable Control Transceiver The MAX3171/MAX3173 enter no-cable mode when the mode select pins are left unconnected or tied HIGH ( 1). In this mode, the multiprotocol dri- vers and receivers are disabled and the supply ...

Page 10

Multiprotocol 3Tx/3Rx Software-Selectable Control Transceivers CTS(DTE) DTR(DTE) RTS(DCE) DSR(DCE) DSR(DTE) DCD(DTE) DTR(DCE) DCD(DCE MAX3171 MAX3173 CABLE WIRING FOR MODE SELECTION CABLE WIRING FOR MODE ...

Page 11

Software-Selectable Control Transceiver I Z -3V -10V +3V -3.25mA Figure 8. Receiver Input Impedance Curve A′ 30kΩ R8 5kΩ R6 10kΩ 10kΩ R4 30kΩ B′ B C′ GND Figure 9. V.11 Termination and Internal Resistance Networks ...

Page 12

Multiprotocol 3Tx/3Rx Software-Selectable Control Transceivers CTS(DTE) DTR(DTE) RTS(DCE) DSR(DCE) DSR(DTE) DCD(DTE) DTR(DCE) DCD(DCE MAX3171 MAX3173 Figure 13. Multiprotocol DCE/ DTE Port Safe). To aid ...

Page 13

Software-Selectable Control Transceiver SERIAL CONTROLLER TXD SCTE TXC RXC RXD LL RTS DTR DCD DSR CTS Figure 14. DCE-to-DTE X.21 Interface driver 3 on the MAX3171/MAX3173, driver 3 on the MAX3170, and driver 4 on the MAX3172/MAX3174. A logic low ...

Page 14

Multiprotocol 3Tx/3Rx Software-Selectable Control Transceivers Compliance Testing A European Standard EN 45001 test report is available for the MAX3170–MAX3174 chipset. A copy of the test report will be available from Maxim. Chip Information TRANSISTOR COUNT: 1763 PROCESS: BiCMOS 14 ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2001 Maxim Integrated Products +3 ...

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