CBM3085AS8

CBM3085AS OPERATION INSTRUCTION FEATURES  1 transmitter and 1 receivers of the serial data of the standard RS-485  Auto Shutdown function provide low power consumption  Supply voltage range: 5.0V±5%  Operating temperature range: -40 ~ +125℃  ESD protection up to 2000V for transmitter input and receiver output (TTL/CMOS levels) and up to 15000V for transmitter output and receiver input (RS-485 levels)  Latch current, min – 300mA at normal climatic condition  Enhanced ESD Specifications: ±15kV IEC61000-4-2 Air Discharge ±8kV IEC61000-4-2 Contact Discharge GENERAL DESCRIPTION The CBM3085A is interface transceiver of serial data under RS-485 standard with low power consumption. The CBM3085A is purposed for application in telecom systems under RS-485/RS-422 standards with low power dissipation, translators of the level, transceiving devices sensitive to electromagnetic radiation, industrial control systems. 1 www.corebai.com CBM3085AS OPERATION INSTRUCTION Pin Description Figure 2 Pin Description Pin Number Symbol Pin Description 01 RO TTL/CMOS Receiver data output 02 RE Receiver Output Enable. 03 DE Transmitter Output Enable. 04 DI Transmitter input 05 GND 06 А Noninverting receiver/transmitter input/output 07 B Inverting receiver/transmitter input/output 08 VCC Common pin Power supply Figure 3. Block Diagram 2 www.corebai.com CBM3085AS OPERATION INSTRUCTION Transmitter Truth Table INPUTS Receiver Truth Table OUTPUTS INPUTS OUTPUTS RE DE DI B A RE DE A,B RO X H H L H L X ≥ –0,05 В H X H L H L L X ≤ –0,2 В L L L X Z Z L X BH H H L X H H X Z H L X ZZ ZZ Note : Н – high level, L – low level , Х –don’t care, Z Note : Н – high level, L – low level , ВН – inputs not – used, Х –don’t care, Z – third state third state, ZZ – inputs and outputs are in the third state Recommended Operating Condition Symbol Limit Parameter Unit min max 4.75 5.25 V VCC Supply voltage VIL Input low voltage DI, DE, PE pins 0 0.8 V VIH Input high voltage DI, DE, PE pins 2.0 VCC V VOD Transmitter output voltage -7.0 12.0 V VIR Receiver input voltage -7.0 12.0 V VOR Receiver output voltage 0 VCC V VTH Receiver differential threshold ±50 ±200 V -40 125 ℃ T voltage Ambient temperature 3 www.corebai.com CBM3085AS OPERATION INSTRUCTION Maximum Ratings Symbol Limit Parameter Unit min max - 7.0 V VCC Supply voltage VIL Input voltage on pins DI, DE,RE -0.3 7.0 V VOD Transmitter output voltage -13 13 V VIR Receiver input voltage -13 13 V VOR Receiver output voltage -0.3 VCC+0.3 V *Stresses beyond those listed under “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 under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 4 www.corebai.com CBM3085AS OPERATION INSTRUCTION Electrical Parameters (VCC = 5V±5%) Symbol Parameter Mode Limit Min VRE = 0B or VCC Idle mode supply current VDE = VCC IILL IILH tSHDN Input low leakage current on control pin Input high leakage current on control pin Shutdown time 25 ± 10 900 –40~125 500 25 ± 10 600 –40~125 9.0 25 ± 10 10 –40~125 - VDE = 0 Shutdown mode supply current 800 Unit μA VRE = 0 V VDI = 0 V or VCC ISHDN TA,℃ - VDI = 0B or VCC ICC Max VDE = 0V - VRE = VCC VDE = VDI = VRE = 0V - VDE = VDI = VRE = VCC - - 50 -0.2 25 ± 10 -2.0 –40~125 0.2 25 ± 10 2.0 –40~125 600 25 ± 10 0.36 25 ± 10 0.4 –40~125 μA μA μA ns Receiver VOLR Output low voltage VOHR Output high voltage RI Input resistance VID = –200mV IOL= 4.0 mA VID = –50 mV IOH= – 4.0 mA – 7.0 V≤VIR≤12 V VIR = 12 V II Input current VIR = –7.0 V VIR = 12 V VIR = –7.0 V IOZLR IOZHR Output low current for OFF-state Output high current for OFF-state - VCC– 1.5 - 96 114 VDE = 0 V VCC = 0 - or 5.25 V -66 125 -75 VOR = 0.4 V - VOR = 2.4 V - 25 ± 10 –40~125 25 ± 10 –40~125 V V kΩ 25 ± 10 μA –40~125 -0.5 25 ± 10 -1.0 –40~125 0.5 25 ± 10 1.0 –40~125 5 www.corebai.com μA μA CBM3085AS OPERATION INSTRUCTION IOSHR Output high short circuit current VOR = VCC IOSLR Output low short circuit current VOR = 0 V VhR Hysteresis - tPHLR, Receiver input to output tPLHR switching delay tSKD R Differential receiver skew tPZHR, Receiver enable from OFF to tPZLR output high (low) tLR (SHDN), Receiver enable from shutdown tHR (SHDN) to output high (low) 8.0 87 25 ± 10 7.0 95 –40~125 -8.0 -87 25 ± 10 -7.0 -95 –40~125 - 50 25 ± 10 185 25 ± 10 200 –40~125 28 25 ± 10 30 –40~125 45 25 ± 10 50 –40~125 |VID|≥2.0V tLH = tHL≤15 ns - |VID|≥2.0V tLH = tHL≤15 ns - CL = 100 pF - CL = 100 pF - 3150 25 ± 10 3500 –40~125 mA mA mV ns ns ns ns Transmitter VOD1 VOD2 Differential output voltage (no load) Differential output voltage (no load) - 5.0 RL = 50Ω(RS-422) RL = 27Ω(RS-485) 2.08 2.00 1.56 1.50 Change in magnitude of ∆VOD differential output voltage for RL = 50; 27Ω - RL = 50; 27Ω - RL = 50; 27Ω - complementary output states VOС Output bias voltage refer to common pin Change in magnitude ∆VOC of bias output voltage for complementary output states –7.0V≤VOD≤VCC IOSD Short circuit current 0V≤VOD≤12V - 25 ± 10 –40~125 V 25 ± 10 –40~125 25 ± 10 V –40~125 0.18 25 ± 10 0.2 –40~125 2.9 25 ± 10 3.0 –40~125 0.18 25 ± 10 0.20 –40~125 ±240 25 ± 10 ±250 –40~125 V V V 240 25 ± 10 250 –40~125 ±26 25 ± 10 ±25 –40~125 - 200 25±10 - 0V≤VOD≤VCC VhD - Hysteresis - tPHL D, Transmitter input to output CL1 = CL2 = 100 pF 330 800 25±10 tPLH D switching delay RDIFF = 54Ω 250 1000 –40~125 6 www.corebai.com CBM3085AS OPERATION INSTRUCTION tSKEW D Transmitter output skew tPZH D, Transmitter enable time from tPZL D OFF to output high (low) tPHZ D, Transmitter disable time from tPLZ D output high (low) to OFF tRD, tFD tLD (SHDN), tHD (SHDN) ST CL1 = CL2 = 100 pF 90 25±10 RDIFF = 54Ω 100 –40~125 2200 25±10 2500 –40~125 CL = 100 pF CL = 15 pF 90 25±10 100 –40~125 Rise or fall time of differential RDIFF = 54Ω 220 620 25±10 output signal CL1 = CL2 = 100 pF 200 750 –40~125 4000 25±10 4500 –40~125 Transmitter enable time from shutdown to output high (low) CL = 15 pF Data rate 600 25±10 500 –40~125 7 www.corebai.com CBM3085AS OPERATION INSTRUCTION Figure 4. Transmitter output & input signals time diagram 8 www.corebai.com CBM3085AS OPERATION INSTRUCTION During the input signal A is changing DC voltage 1.5 V is supplied to input B During the input signal B is changing DC voltage 1.5 V is supplied to input A Figure 5. Receiver output & input signals time diagram 9 www.corebai.com CBM3085AS OPERATION INSTRUCTION Figure 6. Transmitter output & input signals time diagram 10 www.corebai.com CBM3085AS OPERATION INSTRUCTION Figure 7. Receiver output & input signals time diagram 11 www.corebai.com CBM3085AS OPERATION INSTRUCTION PACKAGE NOTES: 1. Dimensions A and B do not include mold flash or protrusion. 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B ‑ 0.25 mm (0.010) per side. Symbol Dimensions ,mm Min Max A 4.8 5 B 3.8 4 C 1.35 1.75 D 0.33 0.51 F 0.4 1.27 G 1.27 H 5.72 J 0° 8° K 0.1 0.25 M 0.19 0.25 P 5.8 6.2 R 0.25 0.5 12 www.corebai.com CBM3085AS OPERATION INSTRUCTION PACKAGE/ORDERING INFORMATION PRODUCT ORDERING NUMBER CBM3085AS8 CBM3085A CBM3085ACS8 TEMPRANGE -40 ~ +125℃ -0℃~70℃ PAKEAGE TRANSPOT MARKING MEDIA,QUANTILY SOIC-8(SOP8) CBM3085A Tape and Reel,2500 SOIC-8(SOP8) CBM3085AC Tape and Reel,2500 PACKAGE 13 www.corebai.com