MAX3170CAI-T Maxim Integrated, MAX3170CAI-T Datasheet

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MAX3170CAI-T

Manufacturer Part Number
MAX3170CAI-T
Description
RS-232 Interface IC
Manufacturer
Maxim Integrated
Series
MAX3170r
Datasheet
1.MAX3170CAI-T.pdf (16 pages)

Specifications of MAX3170CAI-T

Data Rate
240 Kbps
Operating Supply Voltage
3.3 V
Supply Current
7 mA
Operating Temperature Range
0 C to + 70 C
Mounting Style
SMD/SMT
Function
Transceiver
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Number Of Drivers
3
Number Of I/os
12
Number Of Receivers
3
Propagation Delay Time Ns
1 us
Shutdown
Yes
The MAX3170 is a three-driver/three-receiver multipro-
tocol transceiver that operates from a +3.3V single sup-
ply. The MAX3170, along with the MAX3171/MAX3173
and MAX3172/MAX3174, form a complete software-
selectable data terminal equipment (DTE) or data com-
munications equipment (DCE) interface port that
supports the V.28 (RS-232), V.11 (RS-449/V.36, EIA530,
EIA530-A, X.21), and V.35 protocols. The MAX3170
transceiver carries the high-speed clock and data sig-
nals, while the MAX3171 or MAX3173 carries the con-
trol signals. The MAX3170 can be terminated by the
MAX3172 or MAX3174 software-selectable resistor ter-
mination network or by a discrete termination network.
An internal charge pump and proprietary low-dropout
transmitter output stage allow V.11-, V.28-, and V.35-
compliant operation from a +3.3V 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 1mA and all
transmitter and receiver outputs are disabled (high
impedance). Short-circuit limiting and thermal shut-
down circuitry protect the drivers against excessive
power dissipation.
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
________________________Applications
19-1703; Rev 0; 4/00
Data Networking
CSU and DSU
Data Routers
MAX3171
MAX3173
+3.3V, Multiprotocol, 3 Tx/3 Rx, Software-
________________________________________________________________ Maxim Integrated Products
CTS
R3
13 5
PCI Cards
Telecommunications
General Description
DSR
10 8
R2
R1
Selectable Clock/Data Transceiver
DCD
D3
22 6
DTR
D2
23 20 19 4
RTS
D1
LL
1
MAX3172
MAX3174
7
DB-25 CONNECTOR
R4
D4
o Industry’s First +3.3V Single-Supply Transceiver
o 3V/5V Logic-Compatible I/O
o Certified TBR-1 and TBR-2 Compliant (NET1 and
o Supports V.28 (RS-232), V.11 (RS-449/V.36,
o Software-Selectable DTE/DCE
o Complete DTE/DCE Port with MAX3171/MAX3173
o True Fail-Safe Receiver Operation
o Available in Small 28-Pin SSOP Package
o 10Mbps Operation (V.11/V.35)
o Requires Only Four Tiny Surface-Mount
o All Transmitter Outputs Are Fault Protected to
Pin Configuration appears at end of data sheet.
MAX3170CAI
NET2)—Pending Completion
EIA530, EIA530-A, X.21), and V.35 Protocols
and MAX3172/MAX3174
Capacitors
±15V to Survive Cable Miswiring
PART
18
RXD
16
R3
3
Typical Operating Circuit
RXC
R2
9 17
R1
TEMP. RANGE
0°C to +70°C
Ordering Information
TXC SCTE
D3
12 15 11 24 14 2
D2
TXD
D1
MAX3170
PIN-PACKAGE
28 SSOP
Features
1

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MAX3170CAI-T Summary of contents

Page 1

... MAX3172/MAX3174 o True Fail-Safe Receiver Operation o Available in Small 28-Pin SSOP Package o 10Mbps Operation (V.11/V.35) o Requires Only Four Tiny Surface-Mount Capacitors o All Transmitter Outputs Are Fault Protected to ±15V to Survive Cable Miswiring PART MAX3170CAI 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 MAX3170CAI .....................................................0°C to +70°C + 0.3V) Storage Temperature Range ............................-65°C to +150°C CC Lead Temperature (soldering, 10s) ................................+300° unless otherwise noted ...

Page 3

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver ELECTRICAL CHARACTERISTICS (continued +3.3V ±5 1µ 3.3µ and V = +3.3V.) CC PARAMETER SYMBOL LOGIC OUTPUTS (R_OUT) Output High ...

Page 4

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver ELECTRICAL CHARACTERISTICS (continued +3.3V ±5 1µ 3.3µ and V = +3.3V.) CC PARAMETER SYMBOL V.35 TRANSMITTER Differential Output Voltage ...

Page 5

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver (V = +3.3V 1.0µ 3.3µ V.11 SUPPLY CURRENT vs. DATA RATE 250 DCE MODE 50Ω ALL TRANSMITTERS OPERATING AT ...

Page 6

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver (V = +3.3V 1.0µ 3.3µ V.11 LOOPBACK SCOPE PHOTO TIN TOUT/RIN ROUT 50ns/div V.28 SLEW RATE vs. LOAD CAPACITANCE 16 14 ...

Page 7

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver Figure 1. V.11 DC Test Circuit Figure 3. V.35 Transmitter/Receiver Test Circuit C L Figure 4. V.28 Driver Test Circuit _______________________________________________________________________________________ V OC Figure 2. V.11 AC ...

Page 8

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver PIN NAME Positive Supply Generated by the Charge Pump. Bypass V+ to ground with a 3.3µF ceramic 1 V+ capacitor. Positive Terminal of the Inverting Charge-Pump Capacitor. Connect C2+ to C2- ...

Page 9

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver 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 ...

Page 10

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver receiver threshold between -25mV and -200mV in the V.11 and V.35 modes. If the differential receiver input voltage ( ≥-25mV, R_OUT is logic HIGH ...

Page 11

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver CTS(DTE) DTR(DTE) RTS(DCE) DSR(DCE) DSR(DTE) DCD(DTE) DTR(DCE) DCD(DCE) D3 MAX3171 MAX3173 CABLE WIRING FOR MODE SELECTION CABLE WIRING FOR MODE PIN 18 ...

Page 12

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver BALANCED INTERCONNECTING CABLE GENERATOR CABLE TERMINATION A′ A 100Ω MIN B′ B C′ C Figure 8. Typical V.11 Interface A′ R1 51.5Ω 51.5Ω B′ C′ Figure 10. V.11 ...

Page 13

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver A′ R1 51.5Ω 51.5Ω B′ C′ Figure 12. V.35 Termination and Internal Resistance Networks UNBALANCED INTERCONNECTING GENERATOR CABLE TERMINATION A A′ C C′ Figure 13. Typical V.28 Interface ...

Page 14

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver A′ R1 51.5Ω 51.5Ω B′ C′ Figure 14. V.28 Termination and Internal Resistance Networks CTS(DTE) DTR(DTE) RTS(DCE) DSR(DCE) DSR(DTE) DCD(DTE) DTR(DCE) DCD(DCE MAX3171 ...

Page 15

Multiprotocol, 3 Tx/3 Rx, Software- Selectable Clock/Data Transceiver SERIAL CONTROLLER D1 TXD SCTE D2 D3 TXC RXC RXD LL D1 RTS DTR D2 D3 DCD DSR CTS Figure 16. DCE-to-DTE X.21 Interface ______________________________________________________________________________________ DTE MAX3170 MAX3172 MAX3172 MAX3174 MAX3174 ...

Page 16

... Maxim reserves the right to change the circuitry and specifications without notice at any time. implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ...

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