LTM2882IY-3-PBF

LTM2882 Dual Isolated RS232 µModule Transceiver + Power FEATURES n n n n n DESCRIPTION The LTM®2882 is a complete galvanically isolated dual RS232 μModule® transceiver. No external components are required. A single 3.3V or 5V supply powers both sides of the interface through an integrated, isolated DC/DC converter. A logic supply pin allows easy interfacing with different logic levels from 1.62V to 5.5V, independent of the main supply. Coupled inductors and an isolation power transformer provide 2500VRMS of isolation between the line transceiver and the logic interface. This device is ideal for systems with different grounds, allowing for large common mode voltages. Uninterrupted communication is guaranteed for common mode transients greater than 30kV/μs. This part is compatible with the TIA/EIA-232-F standard. Driver outputs are protected from overload and can be shorted to ground or up to ±15V without damage. An auxiliary isolated digital channel is available. This channel allows configuration for half-duplex operation by controlling the DE pin. Enhanced ESD protection allows this part to withstand up to ±10kV (human body model) on the transceiver interface pins to isolated supplies and across the isolation barrier to logic supplies without latchup or damage. n n n n n n Isolated Dual RS232 Transceiver: 2500VRMS Isolated DC Power: 5V at Up to 200mA No External Components Required 1.62V to 5.5V Logic Supply for Flexible Digital Interface High Speed Operation 1Mbps for 250pF/3kΩ Load 250kbps for 1nF/3kΩ Load 100kbps for 2.5nF/3kΩ TIA/EIA-232-F Load 3.3V (LTM2882-3) or 5V (LTM2882-5) Operation No Damage or Latchup to ±10kV ESD HBM on Isolated RS232 Interface or Across Isolation Barrier High Common Mode Transient Immunity: 30kV/μs Common Mode Working Voltage: 560VPEAK True RS232 Compliant Output Levels Small Low Profile (15mm × 11.25mm × 2.8mm) Surface Mount BGA and LGA Packages APPLICATIONS n n n n Isolated RS232 Interface Industrial Communication Test and Measurement Equipment Breaking RS232 Ground Loops L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Isolated Dual RS232 μModule Transceiver 3.3V (LTM2882-3) 5V (LTM2882-5) VL OFF ON ON ISOLATION BARRIER DIN T1IN R1OUT T2IN R2OUT GND GND2 2882 TA01a 1Mbps Operation 5V/DIV TIN VCC LTM2882 VCC2 DE DOUT T1OUT 5V AVAILABLE CURRENT: 150mA (LTM2882-5) 100mA (LTM2882-3) T1OUT/R1IN 10V/DIV T2OUT/R2IN R1OUT 5V/DIV R2OUT R1IN T2OUT R2IN 2882 TA01b 400ns/DIV DRIVER OUTPUTS TIED TO RECEIVER INPUTS TOUT LOAD = 250pF + RIN ROUT LOAD = 150pF 2882fa 1 LTM2882 ABSOLUTE MAXIMUM RATINGS (Note 1) PIN CONFIGURATION TOP VIEW 1 A B C D E F G H I J GND2 K L R2IN T2OUT R1IN T1OUT DOUT BGA PACKAGE 32-PIN (15mm 11.25mm 3.42mm) TJMAX = 125°C, JA = 30°C/W, JCTOP = 27.8°C/W, JCBOTTOM = 19.3°C/W, JB = 24°C/W, WEIGHT = 1.1g DE VCC2 GND 2 3 4 5 DIN 6 ON 7 VL 8 VCC R2OUT T2IN R1OUT T1IN VCC to GND .................................................. –0.3V to 6V VL to GND .................................................... –0.3V to 6V VCC2 to GND2............................................... –0.3V to 6V Logic Inputs T1IN, T2IN, ON, DIN to GND .......–0.3V to (VL + 0.3V) DE to GND2 ............................–0.3V to (VCC2 + 0.3V) Logic Outputs R1OUT, R2OUT to GND ...............–0.3V to (VL + 0.3V) DOUT to GND2........................–0.3V to (VCC2 + 0.3V) Driver Output Voltage T1OUT, T2OUT to GND2...........................–15V to 15V Receiver Input Voltage R1IN, R2IN to GND2 ............................... –25V to 25V Operating Temperature Range (Note 4) LTM2882C .........................................0°C ≤ TA ≤ 70°C LTM2882I ..................................... –40°C ≤ TA ≤ 85°C Storage Temperature Range .................. –55°C to 125°C Peak Reflow Temperature (Soldering, 10 sec)....... 245°C LGA PACKAGE 32-PIN (15mm 11.25mm 2.8mm) TJMAX = 125°C, JA = 29°C/W, JCTOP = 27.9°C/W, JCBOTTOM = 18°C/W, JB = 22.7°C/W, WEIGHT = 1.1g ORDER INFORMATION LEAD FREE FINISH LTM2882CY-3#PBF LTM2882IY-3#PBF LTM2882CY-5#PBF LTM2882IY-5#PBF LTM2882CV-3#PBF LTM2882IV-3#PBF LTM2882CV-5#PBF LTM2882IV-5#PBF TRAY LTM2882CY-3#PBF LTM2882IY-3#PBF LTM2882CY-5#PBF LTM2882IY-5#PBF LTM2882CV-3#PBF LTM2882IV-3#PBF LTM2882CV-5#PBF LTM2882IV-5#PBF PART MARKING* LTM2882Y-3 LTM2882Y-3 LTM2882Y-5 LTM2882Y-5 LTM2882V-3 LTM2882V-3 LTM2882V-5 LTM2882V-5 PACKAGE DESCRIPTION 32-Pin (15mm × 11.25mm × 3.42mm) BGA 32-Pin (15mm × 11.25mm × 3.42mm) BGA 32-Pin (15mm × 11.25mm × 3.42mm) BGA 32-Pin (15mm × 11.25mm × 3.42mm) BGA 32-Pin (15mm × 11.25mm × 2.8mm) LGA 32-Pin (15mm × 11.25mm × 2.8mm) LGA 32-Pin (15mm × 11.25mm × 2.8mm) LGA 32-Pin (15mm × 11.25mm × 2.8mm) LGA TEMPERATURE RANGE 0°C to 70°C –40°C to 85°C 0°C to 70°C –40°C to 85°C 0°C to 70°C –40°C to 85°C 0°C to 70°C –40°C to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ This product is only offered in trays. For more information go to: http://www.linear.com/packaging/ 2882fa 2 LTM2882 ELECTRICAL CHARACTERISTICS SYMBOL Supplies VCC VL ICC Input Supply Range Logic Supply Range Input Supply Current ON = 0V LTM2882-3, No Load LTM2882-5, No Load VCC2 Regulated Output Voltage, Loaded LTM2882-3 DE = 0V, ILOAD = 100mA LTM2882-5 DE = 0V, ILOAD = 150mA VCC2(NOLOAD) Regulated Output Voltage, No Load Efficiency ICC2 Driver VOLD VOHD IOSD IOZD Receiver VIR VHYSR RIN Logic VITH Logic Input Threshold Voltage ON, T1IN, T2IN, DIN = 1.62V ≤ VL < 2.35V ON, T1IN, T2IN, DIN = 2.35V ≤ VL ≤ 5.5V DE IINL VHYS VOH Logic Input Current Logic Input Hysteresis Logic Output High Voltage T1IN, T2IN, DIN (Note 2) R1OUT, R2OUT ILOAD = –1mA (Sourcing), 1.62V ≤ VL < 3.0V ILOAD = –4mA (Sourcing), 3.0V ≤ VL ≤ 5.5V DOUT, ILOAD = –4mA (Sourcing) VOL Logic Output Low Voltage R1OUT, R2OUT ILOAD = 1mA (Sinking), 1.62V ≤ VL < 3.0V ILOAD = 4mA (Sinking), 3.0V ≤ VL ≤ 5.5V DOUT, ILOAD = 4mA (Sinking) ESD (HBM) (Note 2) RS232 Driver and Receiver Protection Isolation Boundary (T1OUT, T2OUT, R1IN, R2IN) to (VCC2, GND2) (T1OUT, T2OUT, R1IN, R2IN) to (VCC, VL, GND) (VCC2, GND2) to (VCC, VL, GND) ±10 ±10 ±10 kV kV kV 2882fa The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. LTM2882-3 VCC = 3.3V, LTM2882-5 VCC = 5.0V, VL = VCC, and GND = GND2 = 0V, ON = VL unless otherwise noted. PARAMETER CONDITIONS LTM2882-3 LTM2882-5 l l l l l l l l MIN 3.0 4.5 1.62 TYP 3.3 5.0 0 24 17 MAX 3.6 5.5 5.5 10 30 21 UNITS V V V μA mA mA V V 4.7 4.7 4.8 5.0 5.0 5.0 65 5.35 250 DE = 0, No Load ICC2 = 100mA, LTM2882-5 (Note 2) l l l l l V % mA V V Output Supply Short-Circuit Current Driver Output Voltage Low Driver Output Voltage High Driver Short-Circuit Current Driver Three-State (High Impedance) Output Current Receiver Input Threshold Receiver Input Hysteresis Receiver Input Resistance –15V ≤ (VR1IN, VR2IN) ≤ 15V RL = 3kΩ RL = 3kΩ VT1OUT, VT2OUT = 0V, VCC2 = 5.5V DE = 0V, VT1OUT, VT2OUT = ±15V –5 5 –5.7 6.2 ±35 ±0.1 ±70 ±10 mA μA Input Low Input High l l l l l l l l 0.8 0.1 3 0.25•VL 0.4 0.4 1.3 1.7 0.4 5 2.5 1.0 7 0.75•VL 0.67•VL 0.67•VCC2 ±1 150 V V V kΩ V V V μA mV V V V 0.4 0.4 0.4 V V V l l l l l l VL – 0.4 VL – 0.4 VCC2 – 0.4 3 LTM2882 SWITCHING CHARACTERISTICS SYMBOL PARAMETER Maximum Data Rate (T1IN to T1OUT, T2IN to T2OUT) The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. LTM2882-3 VCC = 3.3V, LTM2882-5 VCC = 5.0V, VL = VCC, and GND = GND2 = 0V, ON = VL unless otherwise noted. CONDITIONS RL = 3kΩ, CL = 2.5nF (Note 3) RL = 3kΩ, CL = 1nF (Note 3) RL = 3kΩ, CL = 250pF (Note 3) Maximum Data Rate (DIN to DOUT) CL = 15pF RL = 3kΩ, CL = 50pF (Figure 1) RL = 3kΩ, CL = 50pF (Figure 1) RL = 3kΩ, CL = 50pF (Figure 1) DE = ↑ , RL = 3kΩ, CL = 50pF (Figure 2) DE = ↓ , RL = 3kΩ, CL = 50pF (Figure 2) CL = 150pF (Figure 3) CL = 150pF (Figure 3) CL = 150pF (Figure 3) CL = 15pF tR and tF < 4ns (Figure 4) , CL = 150pF (Figure 4) ON = ↑ to VCC2(MIN) l l l l l l l l l l l MIN 100 250 1000 10 TYP MAX UNITS kbps kbps kbps Mbps Driver Driver Slew Rate (6V/tTHL or tTLH) tPHLD, tPLHD tSKEWD tPZHD, tPZLD tPHZD, tPLZD Receiver tPHLR, tPLHR tSKEWR tRR, tFR Auxiliary Channel tPHLL, tPLHL tRL, tFL Power Supply Power-Up Time 0.2 2 ms Propagation Delay Rise or Fall Time 60 60 100 200 ns ns Receiver Propagation Delay Receiver Skew |tPHLR – tPLHR| Receiver Rise or Fall Time 0.2 40 60 200 0.4 μs ns ns Driver Propagation Delay Driver Skew |tPHLD – tPLHD| Driver Output Enable Time Driver Output Disable Time l l 150 0.2 40 0.6 0.3 2 2 0.5 V/μs μs ns μs μs ISOLATION CHARACTERISTICS SYMBOL VISO PARAMETER Rated Dielectric Insulation Voltage Common Mode Transient Immunity VIORM Maximum Working Insulation Voltage Partial Discharge Input to Output Resistance Input to Output Capacitance Creepage Distance The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. LTM2882-3 VCC = 3.3V, LTM2882-5 VCC = 5.0V, VL = VCC, and GND = GND2 = 0V, ON = VL unless otherwise noted. CONDITIONS 1 Minute, Derived from 1 Second Test 1 Second (Note 2) (Note 2) VPR = 1050 VPEAK (Note 2) (Note 2) (Note 2) (Note 2) >109 6 9.48 MIN 2500 ±4400 30 560