SIT3088EEPA

芯力特 SIT3088E 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver FEATURES OUTLINE ➢ 3.0V~5.5V Wide Power Range, Half-Duplex ➢ ESD Protection for RS-485 I/O Pins ±15kV, Human Body Model ➢ Bus Fault Tolerance and Withstand Voltage Reach ±15V ➢ 1/8 Unit Load，Allow Up to 256 Transceivers on the Bus ➢ Driver Short-Circuit Output Protection ➢ Thermal-Shutdown Function ➢ Low Power Off Function ➢ Receiver Open-Circuit Failure Protection ➢ Strong Anti-Noise Ability Provide green and environmentally ➢ Integrated Transient Voltage Suppression Function ➢ friendly lead-free package Data transmission up to 14mbps in an electric noise environment DESCRIPTION SIT3088E is a RS-485 transceiver with 3.0V~5.5V wide power supply, bus port ESD protection capacity of over 15kV HBM, bus withstand voltage range of ±15V, half duplex, low power consumption, and fully meet the requirements of TIA / EIA-485 standard. SIT3088E includes a driver and a receiver, both of which can be enabled and closed independently. When both are disabled, both the driver and the receiver output are high resistance state. SIT3088E has 1/8 load, which allows 256 SIT3088E transceivers to be connected to the same communication bus. It can realize error-free data transmission up to 14mbps. SIT3088E has a working voltage range of 3.0~5.5V, and has the functions of fail safe, over temperature protection, current-limiting protection, over-voltage protection, etc. PIN CONFIGURATION SIT3088E RO R VCC RE B DE A DI D GND Figure 1 SIT3088E Pin Configuration REC V1.6 2022.01 1 / 16 www.sitcores.com 芯力特 SIT3088E 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver LIMITING VALUES PARAMETER SYMBOL VALUE UNIT Supply voltage VCC +7 V Control Input Voltage /RE，DE，DI -0.3~VCC+0.5 V Receiver Input Voltage A，B -15~+15 V Receiver Output Voltage RO -0.3~VCC+0.5 V Operating Temperature Ranges -40~125 ℃ Storage Temperature Range -60~150 ℃ Lead Temperature 300 ℃ SOP8 470 mW MSOP8 830 mW DIP8 700 mW Continuous Power Dissipation The maximum limit parameters means that exceeding these values may cause irreversible damage to the device. Under these conditions, it is not conducive to the normal opration of the device. The continuous operation of the device at the maximum allowable rating may affect the reliability of the device. The reference point for all voltages is ground. PINNING PIN SYMBOL DESCRIPTION 1 RO Receiver Output. When /RE is low and if A - B≥-10mV, RO will be high; if A - B≤-200mV, RO will be low. /RE Receiver Output Enable. Drive /RE low to enable RO; RO is high impedance when /RE is high. Drive /RE high and DE low to enter low-power shutdown mode. DE Driver Output Enable. Drive DE high to enable driver outputs. These outputs are high impedance when DE is low.Drive /RE high and DE low to enter low-power shutdown mode. 4 DI Driver Input. With DE high, a low on DI forces non-inverting output low and inverting output high. Similarly, a high on DI forces non-inverting output high and inverting output low. 5 GND 6 A non-inverting Receiver Input and non-inverting Driver Output 7 B Inverting Receiver Input and Inverting Driver Output 8 VCC 2 3 REC V1.6 2022.01 Ground Positive Supply 2 / 16 www.sitcores.com SIT3088E 芯力特 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver DRIVER DC ELECTRICAL CHARACTERISTICS PARAMETER Differential Driver Output（No load） SYMBOL CONDITION MAX. UNIT 3 5.5 V Figure 2，RL = 54 Ω， VCC=3.3V 1.5 VCC Figure 2，RL = 54 Ω， VCC=5V 1.5 VOD1 MIN. TYP. Differential Driver Output VOD2 Change in Magnitude of Driver Differential Output Voltag（NOTE1） ∆VOD Figure 2，RL = 54 Ω 0.2 V Driver Common-Mode Output Voltage VOC Figure 2，RL = 54 Ω 3 V Change in Magnitude of Common-Mode Output Voltage（NOTE1） ∆VOC Figure 2，RL = 54 Ω 0.2 V Input High Voltage VIH DE，DI，/RE Input Low Voltage VIL DE，DI，/RE Logic Input Current IIN1 DE，DI，/RE Output short-circuit current, short-circuit to high IOSD1 short-circuit to 0V~12V Output short-circuit current, short-circuit to low IOSD2 short-circuit to -7V~0V V VCC 2.0 V -2 0.8 V 2 μA 250 mA mA -250 Over temperature shutdown threshold temperature 140 ℃ Overtemperature shutdown hysteresis temperature 20 ℃ （Unless otherwise noted，Temp=TMIN~TMAX， Temp＝25℃） NOTE1：∆VOD and ∆VOC are the changes in VOD and VOC, respectively, when the DI input changes state. REC V1.6 2022.01 3 / 16 www.sitcores.com SIT3088E 芯力特 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver RECEIVER DC ELECTRICAL CHARACTERISTICS PARAMETER Input current（A，B） SYMBOL IIN2 CONDITION MIN. TYP. DE = 0 V， VCC=0 或 3.3/5V VIN = 12 V DE = 0 V， VCC=0 或 3.3/5V VIN = -7 V MAX. UNIT 125 μA μA -100 Positive input threshold voltage VIT+ -7V≦VCM≦12V Reverse input threshold voltage VIT- -7V≦VCM≦12V -200 Input hysteresis voltage Vhys -7V≦VCM≦12V 10 Receiver Output High Voltage VOH IOUT = −2.5mA， VID = +200 mV VCC-1.5 Receiver Output Low Voltage VOL IOUT = +2.5mA， VID = -200 mV 0.4 V Three-State Output Current at Receiver IOZR 0.4 V < VO < 2.4 V ±1 μA Receiver Input Resistance RIN -7V≦VCM≦12V 96 Receiver Short-Circuit Output Current IOSR 0 V≤VO≤VCC ±8 -10 mV mV 30 mV V kΩ ±90 mA TYP. MAX. UNIT /RE=0V， DE = 0 V， VCC=3.3V 240 650 μA /RE=0V， DE = 0 V VCC=5V 270 750 μA /RE=VCC， DE=VCC， 250 650 μA （Unless otherwise noted， Temp=TMIN~TMAX，Temp＝25℃） SUPPLY CURRENT PARAMETER SYMBOL ICC1 Supply Current ICC2 REC V1.6 2022.01 CONDITION 4 / 16 MIN. www.sitcores.com SIT3088E 芯力特 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver VCC=3.3V Shutdown current ISHDN /RE=VCC， DE=VCC， VCC=5V 280 750 μA /RE=VCC， DE=0V， VCC=3.3V 0.2 10 μA /RE=VCC， DE=0V， VCC=5V 0.2 10 μA TYP. MAX. UNIT 20 40 ns 12 28 ns 20 40 ns 20 40 ns 1 8 ns 55 ns 55 ns 85 ns 85 ns DRIVER SWITCHING CHARACTERISTICS PARAMETER SYMBOL Driver differential Output delay tDD Driver differential output Transition time tTD Drive propagation delay From low to high tPLH CONDITION RL = 60 Ω, CL1=CL2=100pF (figure3、4) RL = 27 Ω, (figure3、4) MIN. Drive propagation delay From high to low tPHL |tPLH-tPHL| tPDS Driver Enable to Output High tPZH Driver Enable to Output low tPZL Driver Disable Time from Low tPLZ Driver Disable Time from high tPHZ In Shutdown mode， Enable to Output High tDSH RL = 110Ω， （figure 5、6） 20 100 ns In Shutdown mode， Enable to Output low tDSL RL = 110Ω， （figure 5、6） 20 100 ns REC V1.6 2022.01 RL = 110Ω， （figure5、6） RL = 110Ω， （figure 5、6） 5 / 16 www.sitcores.com SIT3088E 芯力特 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver RECEIVER SWITCHING CHARACTERISTICS PARAMETER Receiver Input to output from low to high SYMBOL CONDITION MIN. tRPLH Receiver Input to output from high to low tRPHL |tRPLH − tRPHL| tRPDS Receiver Enable to Output Low tRPZL Receiver Enable to Output high CL=15pF Figure7 & Figure8 TYP. MAX. UNIT 60 ns 60 ns 3 10 ns CL=15pF Figure7& Figure 8 15 40 ns tRPZH CL=15pF Figure7 & Figure8 15 40 ns Receiver Disable Time from Low tPRLZ CL=15pF Figure7 & Figure8 25 55 ns Receiver Disable Time from high tPRHZ CL=15pF Figure7 & Figure8 25 55 ns In Shutdown mode， Enable to Output High tRPSH CL=15pF Figure7 & Figure8 150 500 ns In Shutdown mode， Enable to Output low tRPSL CL=15pF Figure7 & Figure8 150 500 ns Time to Shutdown tSHDN NOTE2 300 ns 50 NOTE2： If the enable inputs are RE=high and DE=low for less than 50ns, the device is guaranteed not to enter shutdown. If the enable inputs are in this state for at least 300ns, the device is guaranteed to have entered shutdown. REC V1.6 2022.01 6 / 16 www.sitcores.com SIT3088E 芯力特 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver FUNCTION TABLE Driver Function CONTROL INPUT Receiver Function OUTPUT CONTROL INPUT OUTPUT /RE DE DI A B /RE DE A-B RO X 1 1 H L 0 X ≥-10mV H X 1 0 L H 0 X ≤-200mV L 0 0 X Z Z 0 X Open/short circuit H 1 0 X Z(shutdown) 1 X X Z X=irrelevant; Z=high impedance REC V1.6 2022.01 X=irrelevant; Z=high impedance 7 / 16 www.sitcores.com 芯力特 SIT3088E 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver TEST CIRCUIT Figure 2 Driver DC test load CL includes probe and stray capacitance (the same below) Figure 3 Differential delay and transit time of driver Figure 4 Drive propagation delay REC V1.6 2022.01 8 / 16 www.sitcores.com 芯力特 SIT3088E 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver Figure 5 Drive enable and disable time Figure 6 Drive enable and disable time REC V1.6 2022.01 9 / 16 www.sitcores.com 芯力特 SIT3088E 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver Figure 7 Receiver propagation delay test circuit Figure 8 Receiver enable and disable time REC V1.6 2022.01 10 / 16 www.sitcores.com SIT3088E 芯力特 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver ADDITIONAL DESCRIPTION 1 Sketch SIT3088E is a half-duplex high-speed transceiver with 3.0V~5.5V wide power supply, bus port ESD protection capacity of more than 15kV HBM, bus DC withstand voltage of more than ±15V, used for RS-485/RS-422 communication, including a driver and receiver. It has the functions of fail-safe, over-voltage protection, over-current protection and over temperature protection. SIT3088E realizes error-free data transmission up to 14mbps. 2 Allowing up to 256 Transceivers on the Bus The input impedance of the standard RS485 receiver is 12kΩ (1 unit load), and the standard driver can drive up to 32 unit loads. The receiver of SIT3088E transceiver has 1/8 unit load input impedance (96kΩ), which allows up to 256 transceivers to be connected on the same communication bus in parallel. These devices can be combined arbitrarily or with other RS485 transceivers.Any combination of these devices and/or other RS-485 transceivers with a total of 32 unit loads or less can be connected to the line. 3 Driver output protection Tow mechanisms prevent excessive output current and power dissipation caused by faults or by bus contention.First, over-current protection,fast short circuit protection in the mode voltage range (refer to typical operating characteristics). Second, when the temperature of the tube core exceeds 140℃, the output of the driver is forced into the high resistance state. 4 Typical Applications 4.1Bus Networking: SIT3088E RS485 transceiver is designed for bidirectional data communication on multi-point bus transmission line. Figure 9 shows a typical network application circuit. These devices can also be used as linear repeaters with cables longer than 4000 feet. In order to reduce reflection, terminal matching should be carried out at both ends of the transmission line with its characteristic impedance, and the length of branch lines outside the main line should be as short as possible. SIT3088E 120Ω RE VCC B DE A RO DI R VCC B VCC B A GND VCC B RO RE DE D DI Slave N SIT3088E R D SIT3088E R D Slave 1 A GND Master R A GND GND D SIT3088E 120Ω Slave 2 RE RO DI DE RE RO DI DE Figure 9 Bus type RS485 half duplex communication network REC V1.6 2022.01 11 / 16 www.sitcores.com SIT3088E 芯力特 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver 4.2 Hand in hand Networking: also known as daisy chain topology, is the standard and specification of RS485 bus wiring, and is the RS485 bus topology recommended by TIA and other organizations. The wiring mode is that the main control equipment and a plurality of slave control equipment form a hand-held connection mode, as shown in Figure 10, and the hand-held mode is no branches. This wiring mode has the advantages of small signal reflection and high communication success rate. RO RE DI DE 120Ω DE A DI GND D SIT3088E 120Ω VCC B VCC B R A GND RE RO SIT3088E R D SIT3088E VCC B RO R RE A VCC B A GND DE DI D Slave N SIT3088E R D SIT3088E R D Slave1 VCC B A GND Master GND Slave 2 RE RO DI DE RE RO DI DE Figure10 Hand in hand RS485 half duplex communication network 4.3 Bus port protection: in severe environment, RS485 communication port is usually provided with electrostatic protection, lightning surge protection and other additional protection, and even the plan to prevent 380V market electricity access is needed to avoid the damage of intelligent instrument and industrial control host. Figure 11 shows three common RS485 bus port protection schemes. The first is the scheme of three-level protection by connecting TVS devices in parallel with A,B port to the protective ground, TVS devices in parallel with A,B port, thermistor in series with A,B port, gas discharge tube in parallel to the protective ground; the second is the scheme of three-level protection by connecting TVS in parallel with A,B port to the ground, thermistor in series with A,B port, and varistor in parallel with A,B port; the third is the scheme of three-level protection by connecting AB with pull-up or pull-down resistor to power and ground respectively, connecting TVS between A & B, A or B port connecting thermistor. SIT3088E PTC1 RE VCC B DE A RO DI R TVS1 GDT TVS3 GND D TVS2 Master or Slave PTC2 PE SIT3088E SIT3088E TVS1 RO R RE Master or Slave R RE CK D RO PTC1 A DE DI VCC B GND PTC1 A DE DI VCC B D PTC1 TVS1 GND Master or Slave TVS2 Figure 11 Port protection scheme REC V1.6 2022.01 12 / 16 www.sitcores.com 芯力特 SIT3088E 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver SOP8 DIMENSIONS PACKAGE SIZE SYMBOL MIN./mm TYP./mm MAX./mm A 1.40 - 1.80 A1 0.10 - 0.25 A2 1.30 1.40 1.50 b 0.38 - 0.51 D 4.80 4.90 5.00 E 3.80 3.90 4.00 E1 5.80 6.00 6.20 e 1.27BSC L 0.40 0.60 0.80 c 0.20 - 0.25 θ 0° - 8° REC V1.6 2022.01 13 / 16 www.sitcores.com 芯力特 SIT3088E 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver MSOP8 /8μMAX / VSSOP8 DIMENSIONS PACKAGE SIZE SYMBOL MIN./mm TYP./mm MAX./mm A 2.90 3.0 3.10 A1 0.28 0.35 A2 0.65TYP A3 0.375TYP B 2.90 3.0 B1 4.70 5.10 B2 0.45 0.75 C 0.75 0.95 C1 3.10 1.10 C2 0.328 TYP C3 0.152 C4 0.15 0.23 H 0.00 0.09 θ REC V1.6 2022.01 12°TYP 14 / 16 www.sitcores.com 芯力特 SIT3088E 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver DIP8 DIMENSIONS Package size SYMBOL MIN./mm TYP./mm MAX./mm A 9.00 9.20 9.40 A1 0.33 0.45 0.51 A2 2.54TYP A3 1.525TYP B 8.40 8.70 9.10 B1 6.20 6.40 6.60 B2 7.32 7.62 7.92 C 3.20 3.40 3.60 C1 0.50 0.60 0.80 C2 3.71 4.00 4.31 D 0.20 0.28 0.36 L 3.00 3.30 3.60 REC V1.6 2022.01 15 / 16 www.sitcores.com 芯力特 SIT3088E 3.0V~5.5V, 15KV HBM ESD-Protected, 14Mbps Half-Duplex RS485/RS422 Transceiver DFN3*3-8 /HVSON8 DIMENSIONS PACKAGE SIZE SYMBOL MIN./mm A 0.70 A1 0.00 A3 TYP./mm MAX./mm 0.80 0.02 0.05 0.203 REF D 2.90 3.00 3.10 E 2.90 3.00 3.10 D1 2.35 2.3 2.55 E1 1.55 1.65 1.75 b 0.2 0.25 0.33 e L 0.65 TYP 0.35 0.45 ORDERING INFORMATION TYPE NUMBER TEMPERATURE PACKAGE SIT3088EESA -40℃~125℃ SOP8 SIT3088EEUA -40℃~125℃ MSOP8/VSSOP8/8μMAX SIT3088EEPA -40℃~125℃ DIP8 SIT3088ETK -40℃~125℃ HVSON8/DFN3*3-8 Tapered package is 2500 pcs/reel. The HVSON8/DFN3*3-8 package is 5000 pcs/reel. Important statement SIT reserves the right to change the above-mentioned information without prior notice. REC V1.6 2022.01 16 / 16 www.sitcores.com