MXL1543CAI ,+5V, Multiprotocol, 3Tx/3Rx, Software-Selectable Clock/Data TransceiversFeaturesThe MXL1543 is a three-driver/three-receiver multipro-♦ MXL1543, MXL1544/MAX3175, and MXL13 ..
MXL1544CAI ,+5V Multiprotocol, Software-Selectable Control TransceiversELECTRICAL CHARACTERISTICS(V = +5V, V = +6.8V, V = -5.6V, T = T to T , unless otherwise noted. Typi ..
MXR7311GL , Low Cost, Low Noise ±2 g Dual Axis Accelerometer with Ratiometric Analog Outputs
MXR7311GL , Low Cost, Low Noise ±2 g Dual Axis Accelerometer with Ratiometric Analog Outputs
MXR9150MZ , The MXR9150G/M is a low cost, tri axis accelerometer fabricated on a standard, submicron CMOS process.
MXT224 , maXTouch 224-channel Touchscreen Sensor IC
NDY2403C , Isolated 3W Wide Input DC/DC Converters
NDY2405C , Isolated 3W Wide Input DC/DC Converters
NDY2405C , Isolated 3W Wide Input DC/DC Converters
NDY2405C , Isolated 3W Wide Input DC/DC Converters
NDY2415C , Isolated 3W Wide Input DC/DC Converters
NE02135 ,NECs NPN SILICON HIGH FREQUENCY TRANSISTORapplications. . _
FREQUENCY (MHz) NFmln (dB) GA OPT SOURCE HN/50 n
600 1.2 16.6 .36 A 69° A4
1 ..
MXL1543CAI
+5V, Multiprotocol, 3Tx/3Rx, Software-Selectable Clock/Data Transceivers
General DescriptionThe 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 0.5µA 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.
Applications
FeaturesMXL1543, MXL1544/MAX3175, and MXL1344A
Chipset Is Pin Compatible with LTC1543,
LTC1544, and LTC1344ASupports RS-232, RS-449, EIA-530, EIA-530A,
V.35, V.36, and X.21Software-Selectable Cable Termination Using the
MXL1344AComplete DTE or DCE Port with MXL1544/
MAX3175, and MXL1344A+5V Single-Supply Operation0.5µA No-Cable ModeTUV-Certified NET1/NET2 and TBR1/TBR2-
Compliant
MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data Transceivers
Ordering Information19-1929; Rev 1; 9/01
PART TEMP. RANGE PIN-PACKAGEMXL1543CAI 0° to +70°C 28 SSOP
Data Networking
CSU and DSU
Data Routers
PCI Cards
Telecommunications
Equipment
Typical Operating CircuitD2D3D4R1R2R3
MXL1543
RXDRXCTXDTXCSCTED2D3R1R2R3MXL1544
MAX3175
CTSDSRRTSDTRDCD
RXC B
RXD A (104)
RXD B
SG (102)
SHIELD (101)
RTS A (105)
RTS B
DTR A (108)
DTR B
DCD A (107)
DCD B
DSR A (109)CTS A (106)
DSR BCTS B
LL A (141)
TXD B
SCTE A (113)
SCTE B
TXC A (114)
TXC B
TXD A (103)
DB-25 CONNECTOR
RXC A (115)510822623201941716391712151124142
MXL1344A
Pin Configuration appears at end of data sheet.
MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data Transceivers
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VCC= +5.0V, C1 = C2 = C4 = 1µF, C3 = C5 = 4.7µF, (Figure 10), TA = TMINto TMAX. Typical values are at TA = +25°C, unless oth-
erwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
All Voltages Referenced to GND Unless Otherwise Noted.
Supply Voltages
VCC.......................................................................-0.3V to +6V
VDD....................................................................-0.3V to +7.3V
VEE.....................................................................+0.3V to -6.5V
VDDto VEE (Note 1)................................................................13V
Logic Input Voltages
M0, M1, M2, DCE/DTE, T_IN................................-0.3V to +6V
Logic Output Voltages
R_OUT....................................................-0.3V to (VCC+ 0.3V)
Transmitter Outputs
T_OUT_, T3OUT_/R1IN_.....................................-15V to +15V
Short-Circuit Duration............................................Continuous
Receiver Input
R_IN_T3OUT_/R1IN_..........................................-15V to +15V
Continuous Power Dissipation (TA= +70°C)
28-Pin SSOP (derate 11.1mW/°C above +70°C).........889mW
Operating Temperature Range
MXL1543CAI .......................................................0°C to 70°C
Junction Temperature.......................................................150°C
Storage Temperature Range ...........................-65°C to +150°C
Lead Temperature (soldering, 10s) ...............................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DC CHARACTERISTICSVCC Operating RangeVCC4.755.25V
RS-530, RS-530A, X.21, no load13
RS-530, RS-530A, X.21, full load100130
V.35 mode, no load20
V.35 mode, full load126170
V.28 mode, no load20
V.28 mode, full load4075
Supply Current
(DCE Mode)
(Digital Inputs = GND or
VCC)
(Transmitter Outputs Static)
ICC
No-cable mode0.510μA
RS-530, RS-530A, X.21, full load230
V.35 mode, full load600Internal Power Dissipation
(DCE Mode)PD
V.28 mode, full load140
Any mode (except no-cable mode), no load6.46.8
V.28 mode, with load6.46.8Positive Charge-Pump
Output VoltageVDD
V.28, V.35 modes, with load, IDD = 10mA6.46.8
V.28, V.35, no load-5.6
V.28 mode, full load-5.6-5.4
V.35 mode, full load-5.6-5.4
Negative Charge-Pump
Output VoltageVEE
RS-530, RS-530A, X.21, full load-5.6-5.4
Supply Rise TimetrNo-cable mode or power-up to turn on500µs
LOGIC INPUTS (M0, M1, M2, DCE/DTE, T1IN, T2IN, T3IN)Input High VoltageVIH2.0
Input Low VoltageVIL0.8V
T1IN, T2IN, T3IN±10
M0, M1, M2, DCE/DTE = GND-100-50-30Logic Input CurrentIIN
M0, M1, M2, DCE/DTE = VCC±10
Note 1:VDDand VEEabsolute difference cannot exceed 13V.
MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data Transceivers
ELECTRICAL CHARACTERISTICS (continued)(VCC= +5.0V, C1 = C2 = C4 = 1µF, C3 = C5 = 4.7µF, (Figure 10), TA= TMINto TMAX. Typical values are at TA = +25°C, unless oth-
erwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
LOGIC OUTPUTS (R1OUT, R2OUT, R3OUT)Output High VoltageVOHISOURCE = 4mA34.5
Output Low VoltageVOLISINK = 4mA0.30.8V
Output Short-Circuit CurrentISC0 ≤ VOUT ≤ VCC±50mA
Output Pullup CurrentILVOUT = 0, no-cable mode70μA
V.11 TRANSMITTEROpen-Circuit Differential Output
VoltageVODOOpen circuit, R = 1.95kΩ (Figure 1)±5V
R = 50Ω (Figure 1), TA = +25oC0.5 ✕
VODO
0.67 ✕
VODOLoaded Differential Output
VoltageVODL
R = 50Ω (Figure 1)±2
Change in Magnitude of Output
Differential VoltageΔVODR = 50Ω (Figure 1)0.2V
Common-Mode Output VoltageVOCR = 50Ω (Figure 1)3.0V
Change in Magnitude of Output
Common-Mode VoltageΔVOCR = 50Ω (Figure 1)0.2V
Short-Circuit CurrentISCVOUT = GND150mA
Output Leakage CurrentIZ-0.25V ≤ VOUT ≤ +0.25V, power-off or
no-cable mode±1±100μA
Rise or Fall Timetr, tf(Figures 2, 6)21025ns
Transmitter Input to Output
DelaytPHL , tPLH(Figures 2, 6)4080ns
Data SkewItPHL- tPLHI(Figures 2, 6)312ns
Output to Output SkewtSKEW(Figures 2, 6)3ns
V.11 RECEIVERDifferential Threshold VoltageVTH-7V ≤ VCM ≤ 7V-200200mV
Input HysteresisΔVTH-7V ≤ VCM ≤ 7V1540mV
Receiver Input CurrentIIN-10V ≤ VA, B ≤10V±0.66mA
Receiver Input ResistanceRIN-10V ≤ VA, B ≤ 10V1530kΩ
Rise or Fall Timetr, tf(Figures 2, 7)15ns
Receiver Input to Output DelaytPHL,tPLH(Figures 2, 7)5080ns
Data Skew|tPHL- tPLH|(Figures 2, 7)416ns
V.35 TRANSMITTEROpen circuit (Figure 3)±7Differential Output VoltageVODWith load, -4V ≤ VCM ≤ 4V (Figure 3)±0.44±0.55±0.66V
Output High CurrentIOHVA,B = 0-13-11-9mA
Output Low CurrentIOLVA,B = 091113mA
MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data Transceivers
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSOutput Leakage CurrentIZ-0.25V ≤ VOUT ≤ +0.25V, power-off or no-
cable mode±1±100μA
Rise or Fall Timetr, tf(Figures 3, 6)5ns
Transmitter Input to Output
DelaytPHL, tPLH(Figures 3, 6)3580ns
Data Skew|tPHL–tPLH|(Figures 3, 6)416ns
Output-to-Output SkewtSKEW(Figures 3, 6)4ns
V.35 RECEIVERDifferential Input VoltageVTH-2V ≤ VCM ≤ 2V (Figure 3)-200200mV
Input HysteresisΔVTH-2V ≤ VCM ≤ 2V (Figure 3)1540mV
Receiver Input CurrentIIN-10V ≤ VA,B ≤ 10V±0.66mA
Receiver Input ResistanceRIN-10V ≤ VA,B ≤ 10V1530kΩ
Rise or Fall Timetr, tf(Figures 3, 7)15ns
Receiver Input to Output DelaytPHL, tPLH(Figures 3, 7)5080ns
Data Skew|tPHL–tPLH|(Figures 3, 7)416ns
V.28 TRANSMITTEROpen circuit±7Output Voltage Swing (Figure 4)VORL = 3kΩ±5±6V
Short-Circuit CurrentISC±150mA
Output Leakage CurrentIZ-0.25V ≤ VOUT ≤ +0.25V, power-off or no-
cable mode±1±100μA
Output Slew RateSRRL = 3kΩ, CL = 2500pF (Figures 4, 8)430V/μs
Transmitter Input to Output
DelaytPHLRL = 3kΩ, CL = 2500pF (Figures 4, 8)1.52.5μs
Transmitter Input to Output
DelaytPLHRL = 3kΩ, CL = 2500pF (Figures 4, 8)1.53μs
V.28 RECEIVERInput Threshold LowVIL0.81.2V
Input Threshold HighVIH1.22.0V
Input HysteresisVHYST0.050.3V
Input ResistanceRIN-15V ≤ VIN ≤ +15V357kΩ
Rise or Fall Timetr, tf(Figures 5, 9)15ns
Receiver Input to Output DelaytPHL(Figures 5, 9)60100ns
Receiver Input to Output DelaytPLH(Figures 5, 9)160250ns
ELECTRICAL CHARACTERISTICS (continued)(VCC= +5.0V, C1 = C2 = C4 = 1µF, C3 = C5 = 4.7µF, (Figure 10), TA= TMINto TMAX. Typical values are at TA = +25°C, unless oth-
erwise noted.)
MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data TransceiversV.11 SUPPLY CURRENT
vs. DATA RATE
MXL1543 toc01
DATA RATE (kbps)
SUPPLY CURRENT (mA)110,000
DCE MODE, R = 50Ω, ALL TRANSMITTERS
OPERATING AT THE SPECIFIED DATA RATE
V.28 SUPPLY CURRENT
vs. DATA RATE
MXL1543 toc02
DATA RATE (kbps)
SUPPLY CURRENT (mA)
DCE MODE ALL TRANSMITTERS
OPERATING AT THE SPECIFIED DATA RATE
RL = 3kΩ, CL = 2500pF160
V.35 SUPPLY CURRENT
vs. DATA RATE
MXL1543 toc03
DATA RATE (kbps)
SUPPLY CURRENT (mA)0.110,000
DCE MODE, FULL LOAD, ALL TRANSMITTERS
OPERATING AT THE SPECIFIED DATA RATE
V.11 DRIVER DIFFERENTIAL OUTPUT
VOLTAGE vs. TEMPERATURE
MXL1543 toc04
TEMPERATURE (°C)
DRIVER DIFFERENTIAL OUTPUT VOLTAGE (V)
DCE MODE, R = 50ΩVOUT+
VOUT-
V.28 OUTPUT VOLTAGE
vs. TEMPERATUREMXL1543 toc05
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
DCE MODE, RL = 3kΩ
VOUT+
VOUT-
OUTPUT VOLTAGE (V)
V.35 OUTPUT VOLTAGE
vs. TEMPERATUREMXL1543 toc06
TEMPERATURE (°C)
DCE MODE, VCM = 0
FULL LOAD
VOL
VOH
V.35 DIFFERENTIAL OUTPUT VOLTAGE
vs. COMMON-MODE VOLTAGE
MXL1543 toc07
COMMON-MODE VOLTAGE (V)
DIFFERENTIAL OUTPUT VOLTAGE (mV)
|VOD|
V.11/V.35 RECEIVER INPUT CURRENT
vs. INPUT VOLTAGE
MXL1543 toc08
INPUT VOLTAGE (V)
RECEIVER INPUT CURRENT (µ
DCE MODE
V.28 RECEIVER INPUT CURRENT
vs. INPUT VOLTAGE
MXL1543 toc09
INPUT VOLTAGE (V)
RECEIVER INPUT CURRENT (mA)
DCE MODE
Typical Operating Characteristics
(VCC= +5.0V, C1 = C2 = C4 =1µF, C3 = C5 = 4.7µF, (Figure 10), TA= TMINto TMAX, TA = +25°C, unless otherwise noted.)
MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data Transceivers200ns/div
V.11 LOOPBACK OPERATIONTIN
TOUT/RIN
ROUT
5V/div
5V/div
5V/div
MXL1543 toc10
R = 50Ω
1μs/div
V.28 LOOPBACK OPERATIONTIN
TOUT/RIN
ROUT
5V/div
5V/div
5V/div
MXL1543 toc11
CL = 2500pF
RL = 3kΩ
V.11 TRANSMITTER PROPAGATION DELAY
vs. TEMPERATUREMXL1543 toc14
PROPAGATION DELAY (ns)
TEMPERATURE (°C)
tPLH
tPHL
V.11 RECEIVER PROPAGATION DELAY
vs. TEMPERATUREMXL1543 toc15
PROPAGATION DELAY (ns)
TEMPERATURE (°C)
tPLH
tPHL
V.35 TRANSMITTER PROPAGATION DELAY
vs. TEMPERATUREMXL1543 toc16
PROPAGATION DELAY (ns)
TEMPERATURE (°C)
tPLH
tPHL
V.35 RECEIVER PROPAGATION DELAY
vs. TEMPERATUREMXL1543 toc17
PROPAGATION DELAY (ns)
TEMPERATURE (°C)
tPHL
tPLH
200ns/div
V.35 LOOPBACK OPERATIONTIN
TOUT/RIN
ROUT
1V/div
5V/div
5V/div
MXL1543 toc12
FULL LOAD10002000300040005000
V.28 SLEW RATE vs. CLOADMXL1543 toc13
CLOAD (pF)
SLEW RATE (V/µs)
+SLEW
-SLEW
RL = 3kΩ
1 TRANSMITTER SWITCHING AT 250kbps.
OTHER TRANSMITTERS SWITCHING AT 15kbps
Typical Operating Characteristics (continued)(VCC= +5.0V, C1= C2 = C4 =1µF, C3 = C5 = 4.7µF (Figure 10), TA = +25°C, unless otherwise noted.)
MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data TransceiversVOC
VOD
Figure 1. V.11 DC Test CircuitRLVOD
Figure 4. V.28 Driver Test CircuitAR
15pF
Figure 5. V.28 Receiver Test Circuit
100pF
15pF
100pF
100ΩB
Figure 2. V.11 AC Test Circuit
VCM
15pF
50Ω
50Ω
125Ω125Ω
50Ω
50ΩBVOD
Figure 3. V.35 Transmitter/Receiver Test Circuit
est Circuits
MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data Transceivers
f = 1MHz: tr ≤10ns: tf ≤ 10ns
VDIFF = V(A) - V(B)
1.5V
1/2 V0
90%
10%50%
tPLH
-V0
B — A
tSKEW
1.5V
tPHL
tSKEW
90%
10%50%
Figure 6. V.11, V.35 Driver Propagation Delays
-V0
V0H
V0L
B — AINPUT
OUTPUT
1.5V
f = 1MHz: tr ≤10ns: tf ≤ 10ns
tPLH
1.5V
tPHL
Figure 7. V.11, V.35 Receiver Propagation Delays
1.5V
tPHL
-V0
-3V
1.5V
tPLH
-3V
Figure 8. V.28 Driver Propagation Delays
VIH
VIL
V0H
V0L
1.3V
tPHL
0.8V
1.7V
tPLH
2.4V
Figure 9. V.28 Receiver Propagation Delays
Timing Diagrams
Detailed Description
The MXL1543 is a three-driver/three-receiver, multipro-
tocol transceiver that operates from a single +5V sup-
ply. The MXL1543, along with the MXL1544/MAX3175
and MXL1344A, form a complete software-selectable
DTE or 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 transceivers
carry the high-speed clock and data signals, while the
MXL1544/MAX3175 transceivers carry serial interface
control signaling. The MXL1543 can be terminated by
the MXL1344A software-selectable resistor termination
network or by a discrete termination network. The
MXL1543 features a 0.5µA no-cable mode, true fail-
safe operation, and thermal shutdown circuitry. Thermal
shutdown protects the drivers against excessive power
dissipation. When activated, the thermal shutdown cir-
cuitry places the driver outputs into a high-impedance
state.
Mode Selection
The state of the mode-select pins M0, M1, and M2
determines which serial interface protocol is selected
(Table 1). The state of the DCE/DTEinput determines
whether the transceiver will be configured as a DTE or
DCE serial port. When the DCE/DTEinput is logic
HIGH, driver T3 is activated and receiver R1 is dis-
abled. When the DCE/DTEinput is logic LOW, driver T3
MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data Transceivers
Pin Description
PINNAMEFUNCTIONC1-Capacitor C1 Negative Terminal. Connect a 1μF ceramic capacitor between C1+ and C1-.C1+Capacitor C1 Positive Terminal. Connect a 1μF ceramic capacitor between C1+ and C1-.
3VDDGenerated Positive Supply. Connect a 4.7μF ceramic capacitor to ground.
4VCC+5V Supply Voltage (±5%). Decouple with a 1μF capacitor to ground.T1INTransmitter 1 TTL-Compatible InputT2INTransmitter 2 TTL-Compatible InputT3INTransmitter 3 TTL-Compatible InputR1OUTReceiver 1 CMOS OutputR2OUTReceiver 2 CMOS OutputR3OUTReceiver 3 CMOS OutputM0Mode-Select Pin with Internal Pullup to VCCM1Mode-Select Pin with Internal Pullup to VCCM2Mode-Select Pin with Internal Pullup to VCCDCE/DTEDCE/DTE Mode-Select Pin with Internal Pullup to VCCR3INBNoninverting Receiver InputR3INAInverting Receiver InputR2INBNoninverting Receiver InputR2INAInverting Receiver InputT3OUTB/R1INBNoninverting Transmitter Output/Noninverting Receiver InputT3OUTA/R1INAInverting Transmitter Output/Inverting Receiver InputT2OUTBNoninverting Transmitter OutputT2OUTAInverting Transmitter OutputT1OUTBNoninverting Transmitter OutputT1OUTAInverting Transmitter OutputGNDGroundVEEGenerated Negative Supply. Connect a 4.7μF ceramic capacitor to ground.C2-Capacitor C2 Negative Terminal. Connect a 1μF ceramic capacitor between C2+ and C2-.C2+Capacitor C2 Positive Terminal. Connect a 1μF ceramic capacitor between C2+ and C2-.
