Multiprotocol, Pin-Selectable Cable Terminator MAX13174E contains
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Multiprotocol, Pin-Selectable Cable Terminator
MAX13174E contains pin-selectable, multiprotocol cable termination networks. Each network capable terminating V.11 (RS-422, RS-530, RS-530A, RS-449, V.36, X.21) with differential load, V.35 with T-network load, V.28 (RS-232) V.10 (RS-423) with open-circuit load with transceivers having on-chip termination. termination protocol selected serial interface cable wiring control. MAX13174E replaces discrete resistor termination networks expensive relays required multiprotocol termination, saving space cost. MAX13174E terminator ideal form complete cable- pin-selectable multiprotocol DCE/DTE interface port when used with MAX13170E MAX13172E transceiver ICs. MAX13174E terminator power generated MAX13170E charge pump, simplifying system design. MAX13174E/MAX13170E/MAX13172E pinfor-pin compatible with MXL1344A/MXL1543/ MXL1544/MAX3175. MAX13174E available 24-pin SSOP package specified +70°C commercial temperature range. Supports V.11 V.35 Termination Pin-Selectable Termination Pin-Selectable DCE/DTE Support Replaces Discrete Resistor Termination Networks Expensive Relays Available 24-Pin SSOP Package Certified TBR-1 TBR-2-Compliant Chipset (NET1 NET2)-Pending Completion Testing
Features
MAX13174E
Applications
Data Networking Data Routers Cards Telecommunication Equipment Data Switches
Ordering Information
PART MAX13174ECAG+ TEMP RANGE +70°C PIN-PACKAGE SSOP
+Denotes lead(Pb)-free/RoHS-compliant package.
Configuration appears data sheet.
Typical Operating Circuit
SCTE
MAX13172E
MAX13170E
MAX13174E
(141)
(106) (109)
(107)
(108) (105)
(104)
(115)
(114) SCTE (113) SCTE (103)
DB-25 CONNECTOR
Maxim Integrated Products
pricing, delivery, ordering information, please contact Maxim Direct 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
(102) SHIELD (101)
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
ABSOLUTE MAXIMUM RATINGS
(All voltages GND, unless otherwise noted.) Supply Voltages .-0.3V VEE.+0.3V -7.1V Logic-Input Voltages DCE/DTE, LATCH.-0.3V Termination Network Inputs R_A, R_B, R_C.-15V +15V (high-impedance state) .±14V R_B.±6V (high-impedance state) .±3V R_C.±3V (high-impedance state) .±14V Continuous Power Dissipation +70°C) 24-Pin SSOP (derate 14.9mW/°C above +70°C) .1196mW Junction-to-Case Thermal Resistance (JC) (Note 24-Pin SSOP.24.6°C/W Junction-to-Ambient Thermal Resistance (JA) (Note 24-Pin SSOP.66.9°C/W Operating Temperature Range.0°C +70°C Junction Temperature .+150°C Storage Temperature Range .-65°C +150°C Lead Temperature (soldering, 10s) .+300°C Note Package thermal resistances were obtained using method described JEDEC specification JESD51-7, using fourlayer board. detailed information package thermal considerations, refer
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC +4.5V +5.5V, -7.1V, +70°C, unless otherwise noted. Typical values +25°C, +5V, -5V, unless otherwise noted.) (Note
PARAMETER Operating Range Operating Range Rising Threshold Supply Current inputs connected VCC, except no-cable mode inputs connected VCC, except no-cable mode SYMBOL CONDITIONS -7.1 1.88 1.34 -3.5 2.75 6.15 2.85 UNITS
ICC_NOCAB M[x] 1111 (Note Supply Current TERMINATOR INPUTS Differential-Mode Impedance V.35 Mode Common-Mode Impedance V.35 Mode Differential-Mode Impedance V.11 Mode High-Impedance Leakage Current Differential Path Enable Time Differential Path Disable Time Common-Mode Path Enable Time Common-Mode Path Disable +2V, channels (Figure +2V, channels (Figure +7V, channels, except nocable mode (Figure +7V, channels, no-cable mode, (Figure -15V VR_A +15V
Multiprotocol, Pin-Selectable Cable Terminator
ELECTRICAL CHARACTERISTICS (continued)
(VCC +4.5V +5.5V, -7.1V, +70°C, unless otherwise noted. Typical values +25°C, +5V, -5V, unless otherwise noted.) (Note
PARAMETER SYMBOL CONDITIONS 0.66 0.33 Human Body Model R_A, Other Pins Discharge 61000-4-2 Contact Discharge 61000-4-2 Human Body Model UNITS LOGIC INPUTS (M0, LATCH, DCE/DTE) Input High Voltage Input Voltage Logic Input Current PROTECTION
MAX13174E
Note parameters tested single temperature. Specifications over temperature guaranteed design. Note M[x] input DCE/DTE,
Typical Operating Characteristics
(VCC +5V, -5V, +25°C, unless otherwise noted.)
V.11 V.35 DIFFERENTIAL IMPEDANCE TEMPERATURE
MAX13174E toc01
V.11 V.35 DIFFERENTIAL IMPEDANCE COMMON-MODE VOLTAGE (VCM)
MAX13174E toc02
V.11 V.35 DIFFERENTIAL IMPEDANCE SUPPLY VOLTAGE (VCC)
IMPEDANCE
MAX13174E toc03
IMPEDANCE
IMPEDANCE
TEMPERATURE (NC)
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
Typical Operating Characteristics (continued)
(VCC +5V, -5V, +25°C, unless otherwise noted.)
V.11 V.35 DIFFERENTIAL IMPEDANCE SUPPLY VOLTAGE (VEE)
MAX13174E toc04
V.35 COMMON-MODE IMPEDANCE TEMPERATURE
MAX13174E toc05
V.35 COMMON-MODE IMPEDANCE COMMON-MODE VOLTAGE (VCM)
MAX13174E toc06
IMPEDANCE
IMPEDANCE
IMPEDANCE
TEMPERATURE (NC)
V.35 COMMON-MODE IMPEDANCE SUPPLY VOLTAGE (VCC)
MAX13174E toc07
V.35 COMMON-MODE IMPEDANCE SUPPLY VOLTAGE (VEE)
MAX13174E toc08
HI-Z MODE SUPPLY CURRENT TEMPERATURE
SUPPLY CURRENT (FA)
MAX13174E toc09
IMPEDANCE
IMPEDANCE
1000
TEMPERATURE (NC)
V.11 V.35 DIFFERENTIAL IMPEDANCE MAGNITUDE FREQUENCY
MAX13174E toc10
V.11 V.35 DIFFERENTIAL IMPEDANCE PHASE FREQUENCY
PHASE (DEGREES)
MAX13174E toc11
IMPEDANCE
FREQUENCY (MHz) FREQUENCY (MHz)
Multiprotocol, Pin-Selectable Cable Terminator
Description
NAME LATCH DCE/DTE Mode-Select Input (Table Negative Supply Voltage (typically connected MAX13170E). Bypass with 0.1µF capacitor. Load Center Load Node Load Node Load Node Load Node Load Center Load Node Load Node Load Center Ground Supply Voltage. Bypass with 0.1µF capacitor. Load Node Load Node Load Node Load Node Load Node Load Node Latch Signal Input. When LATCH low, input latches transparent. When LATCH high, data mode-select inputs latched. DCE/DTE Mode-Select Input (Table Mode-Select Input (Table Mode-Select Input (Table FUNCTION
MAX13174E
Detailed Description
MAX13174E contains pin-selectable multiprotocol cable termination networks (Figure Each network capable terminating V.11 (RS-422, RS-530, RS-530A, RS-449, V.36, X.21) with differential load, V.35 with T-network load, V.28 (RS-232) V.10 (RS-423) with open-circuit load with transceivers that have on-chip termination. termination protocol selected serial interface cable wiring control. MAX13174E replaces discrete resistor termination networks expensive relays required multiprotocol termination, saving space cost. MAX13174E terminator designed form complete cable- pin-selectable multiprotocol DCE/DTE interface port when used with MAX13170E MAX13172E transceivers. MAX13174E terminator
power generated MAX13170E charge pump, simplifying system design. MAX13174E/MAX13170E/MAX13172E functionally compatible with MXL1344A/MXL1543/MXL1544/ MAX3175.
Termination Modes
termination networks MAX13174E three modes: V.11, V.35, high impedance. shown Figure V.11 mode, switch closed switch open, presenting across terminals V.35 mode, switches both closed, presenting T-network with differential impedance common-mode impedance. high-impedance mode, switches both open, presenting high impedance across terminals suitable V.28 V.10 modes.
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
AMMETER
AMMETER
Figure V.11 V.35 Differential Impedance Measurement
Figure V.35 Common-Mode Impedance Measurement
DCE/DTE LATCH MAX13174E
Applications Information
Older multiprotocol interface termination circuits have been constructed using expensive relays with discrete resistors, custom cables with built-in termination, complex circuit-board configurations route signals correct termination. MAX13174E provides simple solution this termination problem. required termination configurations easily cable- pinselectable using four mode-control input pins (M0, DCE/DTE).
Figure Block Diagram
Using MAX13174E Multiprotocol Serial Interface
MAX13174E terminator designed form complete cable- pin-selectable multiprotocol DCE/DTE interface port when used with MAX13170E/MAX13172E differential drivers/receivers. MAX13174E terminator designed power generated MAX13171E's charge pump meets data sheet specifications when connected illustrated Figure mode-selection tables three devices identical, allowing DCE/DTE pins each device connected single 4-wire control bus. MAX13170E MAX13172E provide internal pullups four lines,
state MAX13174E's mode-select pins-M0, DCE/DTE-determines mode each termination networks. Table shows cross-reference termination mode select state each termination networks within MAX13174E.
No-Cable Mode
MAX13174E enters no-cable mode when modeselect inputs-M0, M2-are connected high. no-cable mode, termination networks placed V.11 mode, with closed open (Figure
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
Table Termination Mode Select Table
PROTOCOL V.10/RS-423 RS-530A RS-530 X.21 V.35 RS-449/V.36 V.28/RS-232 Cable V.10/RS-423 RS-530A RS-530 X.21 V.35 RS-449/V.36 V.28/RS-232 Cable DCE/ V.35 V.11 V.35 V.11 V.35 V.11 V.35 V.11 V.11 V.35 V.11 V.11 V.11 V.11 V.35 V.11 V.11 V.11 V.11 V.11 V.11 V.35 V.11 V.11 V.11 V.11 V.11 V.35 V.11 V.11 V.11 V.11 V.11 V.35 V.11 V.11 V.11 V.11 V.11 V.35 V.11 V.11
Note: indicates high impedance, high, low. V.11, V.35 refer termination modes (Figure
MAX13174E
MAX13174E
MAX13174E
CLOSED
CLOSED
OPEN
OPEN
CLOSED
OPEN
V.11
Figure Termination Modes
V.35
forcing them logic-high state they grounded. This allows interface-mode configuration simply strapping appropriate pins ground interconnect cable.
V.11 Termination
standard V.11 interface shown Figure highspeed data transmission, V.11 specification recommends terminating cable receiver with (min) resistor. resistor, although required, prevents reflections from corrupting transmitted data.
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
100pF 4.7µF 4.7µF DTE_TXD/DCE_RXD DTE_SCTE/DCE_RXC DTE_TXC/DCE_TXC DTE_RXC/DCE_SCTE DTE_RXD/DCE_TXD CHARGE PUMP 4.7µF DCE/DTE LATCH 100pF 100pF
MAX13174E
SCTE SCTE
SCTE SCTE
MAX13170E DCE/DTE
SHIELD
DB-25 CONNECTOR
DTE_RTS/DCE_CTS DTE_DTR/DCE_DSR
DTE_DCD/DCE_DCD DTE_DSR/DCE_DTR DTE_CTS/DCE_RTS DTE_LL/DCE_LL
MAX13172E INVERT DCE/DTE DCE/DTE
Figure Multiprotocol DCE/DTE Port
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
GENERATOR BALANCED INTERCONNECTING CABLE LOAD CABLE RECEIVER TERMINATION
impedance common-mode impedance. V.35 driver generates current output (±11mA, typ) that develops output voltage between 440mV 660mV across load termination networks. Figure MAX13174E used implement resistive T-network that needed properly terminate V.35 receiver. Internal MAX13174E, closed connect T-network resistors circuit. V.35 specification allows ground difference between V.35 generator V.35 load. MAX13174E maintains correct termination impedance over these conditions.
Figure Typical V.11 Interface
Figure MAX13174E used terminate V.11 receiver MAX13170E. Internal MAX13174E, closed open present typical differential resistance high-Z common-mode impedance. MAX13170E's internal V.28 termination disabled opening V.11 specification allows signals with commonmode variations differential signal amplitudes from MAX13174E maintains termination impedance between over these conditions.
V.35 reduction
applications where reduction especially important, MAX13174E termination networks provide shunting common-mode driver currents GND. Mismatches between driver output propagation delays create common-mode disturbance cable. This common-mode energy shunted placing 100pF capacitor from center T-network termination (R1C, R2C, shown Figure
V.28 Termination
Most industry-standard V.28 receivers (including MAX13170E MAX13172E) require external termination because receiver includes internal termination resistor. When MAX13174E
V.35 Termination
Figure shows standard V.35 interface. generator load must both present differential
MAX13170E
MAX13174E
RECEIVER
1.4V
Figure V.11 Termination Internal Resistance Networks
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
GENERATOR BALANCED INTERCONNECTING CABLE CABLE TERMINATION LOAD RECEIVER
Figure Typical V.35 Interface
MAX13170E
MAX13174E
RECEIVER
1.4V
Figure V.35 Termination Internal Resistance Networks
placed V.28 mode, termination networks placed high-Z mode. high-Z mode, MAX13174E termination networks interfere with MAX13170E's internal termination. Figure MAX13174E MAX13170E placed V.28 mode. Switches opened MAX13174E place network high-Z mode. Switch closed MAX13170E enable terminating resistor.
Complete X.21 Interface
complete DTE-to-DCE interface operating X.21 mode shown Figure MAX13174E terminates V.11 clock data signals. MAX13170E carries clock data signals, MAX13172E carries control signals. control signals generally require external termination.
Protection
ESD-protection structures incorporated pins protect against electrostatic discharges encountered during handling assembly. differential resistors
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
MAX13170E
MAX13174E
RECEIVER
1.4V
Figure V.28 Termination Internal Resistance Networks
have extra protection against static electricity. Maxim's engineers have developed state-of-the-art structures protect these pins against ±15kV (Human Body Model) without damage. structures withstand high states: normal operation, shutdown, powered down. After event, MAX13174E keeps working without latchup damage. protection tested various ways. Electrical Characteristics table shows limits, each device characterized protection following methods: Human Body Model Contact Method specified 61000-4-2 Discharge Method specified 61000-4-2
61000-4-2 61000-4-2 standard covers testing performance finished equipment. However, does specifically refer integrated circuits. MAX13174E helps equipment designs meet 61000-4-2 without need additional ESD-protection components. major difference between tests done using Human Body Model 61000-4-2 higher peak current 61000-4-2 because series resistance lower 61000-4-2 model. Figure shows 61000-4-2 model, Figure shows current waveform 61000-4-2 Contact Discharge test.
Test Conditions performance depends variety conditions. Contact Maxim reliability report that documents test setup, test methodology, test results. Human Body Model Figure shows Human Body Model, Figure shows current waveform generates when discharged into impedance. This model consists 100pF capacitor charged voltage interest, which then discharged into test device through 1.5k resistor.
Compliance Testing
European Standard 45001 test report MAX13170E, MAX13172E, MAX13174E chipset will available from Maxim upon completion testing. Contact Maxim Quality Assurance copy report.
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
SERIAL CONTROLLER
MAX13170E MAX13174E MAX13174E
MAX13170E
SERIAL CONTROLLER
SCTE
SCTE
SCTE
MAX13172E
MAX13172E
Figure DTE-to-DCE X.21 Interface
Multiprotocol, Pin-Selectable Cable Terminator MAX13174E
CHARGE-CURRENT LIMIT RESISTOR HIGHVOLTAGE SOURCE 1500 DISCHARGE RESISTANCE DEVICE UNDER TEST
100% AMPS
PEAK-TO-PEAK RINGING (NOT DRAWN SCALE)
100pF
STORAGE CAPACITOR
36.8% TIME CURRENT WAVEFORM
Figure 12a. Human Body Test Model
100M CHARGE-CURRENT LIMIT RESISTOR HIGHVOLTAGE SOURCE DISCHARGE RESISTANCE DEVICE UNDER TEST
Figure 12b. Human Body Current Waveform
100% IPEAK
150pF
STORAGE CAPACITOR
0.7ns 30ns 60ns
Figure 12c. 61000-4-2 Test Model
Figure 12d. 61000-4-2 Generator Current Waveform
Configuration
PROCESS: BiCMOS
VIEW
Chip Information
DCE/DTE LATCH
Package Information
latest package outline information land patterns, www.maxim-ic.com/packages. PACKAGE TYPE SSOP PACKAGE CODE A24+3 DOCUMENT 21-0056
MAX13174E
SSOP
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600
2009 Maxim Integrated Products SPRINGER Maxim registered trademark Maxim Integrated Products, Inc.
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