HT82C251ARZ

HT82C251A CAN transceiver for 24 V systems The HT82C251A is the interface between the CAN protocol controller and the physical bus.. The device provides differential transmit ca-pability to the bus and differential receive ca-pability to the CAN controller. The IC is in-tended for automotive electronic applications Main features • Fully compatible with the “ISO 11898-24 V” standard • Thermally protected • Short-circuit proof • Three mode operation • High speed of data transfer (up to 1 Mbit/s) • High immunity against electromagnetic interference. • Permissible value of electrostatic potential is 2000V. DIP8 N SUFFIX HT82C251ANZ 8 1 SOP8 R SUFFIX HT82C251ARZ MSOP8 M SUFFIX HT82C251ARMZ QFN16(3*3) Q SUFFIX HT82C251ARQZ TA = -40 to 150C for all packages. Pin layout TXD 01 08 RS GND 02 07 CANH VCC 03 06 CANL RXD 04 05 Vref Rev. 01 HT82C251A VCC 01 TXD Input signal block Protection block 03 VT1 Driver VD1 08 RS Switch mode block 07 RXD CANH 04 Receiver 06 CANL VD2 Vref 05 Reference voltage VT2 02 GND VD1, VD2 – diodes; VT1, VT2 - transistors Fig. 3 – Block diagram Rev. 01 HT82C251A Table 2 – Absolute maximum ratings Symbol Unit Target Parameter Supply voltage Min -0,3 Max 7,0 V Vn 01, 04, 05, 08 pin voltage -0,3 VCC + 0,3 V Vtr 06, 07 pin transient voltage -200 200 Tstg Storage temperature -60 Tj Junction temperature - VCC V 150 o C 150 o C Table 3 – Recommended operating condition Symbol VCC VCAN Supply voltage Input/output high and low level voltage of CAN - signal Unit Target Parameter Min 4,5 Max 5,5 V -36 36 V Rev. 01 HT82C251A Table 4 – Electric parameters at -40 ≤Tamb ≤ +125 °C Symbol I3 VIH VIL IIH IIL V6,7 ILO V7 V6 Parameter Supply current Measurement mode Supply Dominant; V1 = 1,0 V, VCC < 5,1 V Dominant; V1 = 1,0 V, VCC < 5,25 V Dominant; V1 = 1,0 V, VCC < 5,5 V Recessive; V1 = 4,0 V, R8 = 47 kΩ Standby mode 1) Standby mode 2) Transmitter Output recessive High-level input voltage Low-level input voltage Output dominant High-level input 4,5 V< VCC < 5,5 V current V1 = 4,0 V 4,5 V< VCC < 5,5 V Low-level input current V1 = 1,0 V 4,5 V< VCC < 5,5 V Recessive bus voltage V1 = 4,0 V, no load 4, 5 V< VCC < 5,5 V Off-state output leak-2, 0 V< (V6, V7) < 7,0 V age 4, 5 V< VCC < 5,5 V current -5, 0 V< (V6, V7) < 36 V CANH output voltage 4,75 V< VСС < 5,5 V V1 = 1,0 V V1 = 1,0 V 4,5 V< VСС < 4,75 V 4,5 V< VCC < 5,5 V CANL output voltage V1 = 1,0 V Target Min Max - 78 - 80 - 85 - 10 - 0,315 0,275 Unit mA 0,7 VCC VCC+0,3 V -0,3 -200 0,3 VCC 30 V μA -200 -100 μA 2,0 3,0 V -2,0 2,0 mA -10 10 3,0 4,5 2,75 4,5 0,5 2,0 V V Rev. 01 HT82C251A Table 4 continued Symbol ΔV6,7 Parameter Measurement mode Target Min Max 1,5 3,0 Unit V 4,5 V< VCC < 5,5 V V1 = 1,0 V 1,5 V1 = 1,0 V, RL = 45 Ω -0,5 0,05 V1 = 4,0 V, no load CANH short-circuit mA 4,5 V< VCC < 5,5 V -200 ISC7 current V7 = -5,0 V CANL signal shortmA 4,5 V< VCC < 5,5 V 200 ISC6 circuit current V6 = 36 V Receiver (pins 06, 07 are externally controlled, V4 = 4,0 V, -2,0 V< (V6, V7) < 7,0 V, unless otherwise specified) 3) VDIFF(R) V -1,0 0,5 Differential input volt-1,0 0,4 4,5 V< VCC < 5,5 V age -7, 0 V< (V6, V7) < 12 V (recessive mode) difference between output voltage at pins 6 and 7 3) VDIFF(D) - Differential input voltage (dominant mode) 5,0 5,0 0,97 0,91 5,0 5,0 4,5 V< VCC < 5,5 V I4 = -100 μA 4,5 V< VCC < 5,5 V I4 = 1,0 mA 4,5 V< VCC < 5,5 V I4 = 10 mA 4,5 V< VCC < 5,5 V 0,8 VCC VCC V 0 0,2 VCC V 0 1,5 5,0 25 kΩ 4,5 V< VCC < 5,5 V 20 100 kΩ 4,5 V< VCC < 5,5 V -7,0 V< (V6, V7) < 12 V 4) 4,5 V< VCC < 5,1 V 4) VOH VOL RI RDIFF VREF High-level output voltage (pin 4) Low-level output voltage (pin 4) CANL and CANH input resistance l Differential input resistance Reference voltage V 0,9 1,0 Reference voltage 4,5 V< VCC < 5,5 V V8 = 1,0 V, |I5| < 50 мкА 4,5 V< VCC < 5,5 V V8 = 4,0 V, |I5| < 5,0 μA 0,45 VCC 0,55 VCC 0,4 VCC 0,6 VCC V Rev. 01 HT82C251A Table 4 continued Symbol tbit tonTXD toffTXD tonRXD toffRXD tWAKE tdRXDL Vstb Islope Vslope Measurement mode Target Min Max Timing parameters (RL = 60 Ω, CL = 100 pF, unless otherwise specified) 1,0 One bit transmitting 4,5 V< VCC < 5,5 V minimum time R8 = 0 Ω 50 Input data transfer to 4,5 V< VCC < 5,5 V active bus delay R8 = 0 Ω Input data transfer to 80 4,5 V< VCC < 5,5 V inactive bus delay R8 = 0 Ω 120 Input data transfer to 4,5 V< VCC < 5,5 V active receiver delay R8 = 0 Ω 550 4,5 V< VCC < 5,5 V R8 = 47 kΩ 190 Input data transfer to 4,5 V< VCC < 5,5 V inactive receiver delay R8 = 0 Ω 400 4,5 V< VCC < 5,5 V R8 = 47 kΩ Wake-up time from 20 4, 5 V< VCC < 5,5 V standby mode (via 08 pin) 3,0 Bus input data transfer 4,5 V< VCC < 5,5 V delay to low on output V8 = 4,0 V of received data Standby mode and low RFI mode 0,75 VCC Input voltage for 4,5 V< VCC < 5,5 V standby mode Input current for low - 200 - 10 4,5 V< VCC < 5,5 V RFI mode Input voltage for low 0,4 VCC 0,6 VCC 4,5 V< VCC < 5,5 V RFI mode Parameter Unit μs ns ns ns ns μs μs V μA V _______ 1) I1 = I4 = I5 = 0 mA, V8 = VCC I1 = I4 = I5 = 0 mA, V8 = VCC, Tamb < 90 oC. 3) For the receiver in all modes. 4) Standby mode 2) Rev. 01 HT82C251A Table 5 Typical values of electric parameters Symbol Parameter Vdiff(hys) Differential hysteresis voltage |SR| CANH, CANL slew rate ISC7 High level CAN short circuit current Measurement mode Typical value Unit VCC from 4,5 to 5,5 V 150 mV VCC from 4,5 to 5,5 V; R8 = 47 kΩ VCC from 4,5 to 5,5 V; V7 = -36 V 7,0 V/μs -100 mA FUNCTIONAL DESCRIPTION The HT82C251A provides differential transmit capability to the bus and differential receive ca-pability to the CAN controller. Data transfer rate is up to 1 Mbit/s. Output stage has good load capacity. It guarantees 2V peak-to-peak output voltage for 60Ω load. HT82C251A has thermal and short circuit protection, high immunity to EMI and is fully compatible with the “ISO 11898-24 V” standard. The IC provides three operation modes: high-speed, reduced RFI mode, standby mode. The design of HT82C251A permits possibility of adjustment of rise and fall slope of output stages (transistors). Pin RS is used to select one of three modes of operation: high-speed, reduced RFI or standby. High level applied to this pin switches the IC to standby mode, low level – to highspeed mode. The high-speed mode is selected by connecting pin RS to ground.To reduce RFI, connect pin RS by resistor Rext to ground. The rise and fall slope of output stages (transistors) can be regulated with Rext resistance. To select high-speed dominant mode a low level voltage (~ 1 V) is applied to TXD pin and RS is connected to ground, CANH and CANL pins are connected by 60Ω resistor. Guaranteed peak-to-peak output voltage (high and low level) will be 1,5 V for all operating supply voltage range To select recessive mode a high level voltage (~ 4 V) is applied to TXD pin and RS is connected to ground. In recessive mode bus output voltage V6,7 is about (~ 2.5 V). High level (~ 4V) applied to pin RS switches IC to standby mode (with low power consumption); in this mode consumption current doesn`t exceed 270 μA. In this mode transmitter is turn off and consumption current of receiver and all circuit is significantly decreased. Reference voltage value VREF per 05 output is half of supply voltage. Rev. 01 HT82C251A Table 6 - Truth table of the transceiver Supply voltage range, VCC, V TXD CANH CANL Bus state RXD pin pin pin 4,5 ÷ 5,5 L H L Dominant L 4,5 ÷ 5,5 H Floating Floating Recessive H* 4,5 ÷ 5,5 X Floating, if VRs > 0,75 VCC Floating, if VRs > 0,75 VCC Floating H* 0 ÷ 5,5 Floating Floating Floating Floating X output Notes 1 H – high level voltage; L – low level voltage; X – б don’t care (H or L). 2 Floating state – half of sum of output levels on pins 06 and 07 (VO(CANL) + VO(CANH) / 2). __________ * If another bus node is transmitting a dominant bit, then RXD shall be low Table 7 – Transceiver mode table RS pin state Mode VRs > 0,75 VCC 10 μA < -IRs < 200 μA Standby Slope control (Reduced RFI) High – speed VRs < 0,3 VCC RS pin resulting voltage or current - IRs < 10 μA 0,4 VCC < VRs < 0,6 VCC - IRs < 500 μA Rev. 01 HT82C251A Table 8 - Truth table of the receiver Input differential voltage VDIFF*, В RXD pin VDIFF > 0,9 V L 0,5 V < VDIFF < 0,9 V ** VDIFF < 0,5 V H Absent H _________ * Input difference voltage VDIFF, V is determined by formula (1) VDIFF = V7 – V6 , V7 – CANH output voltage, V; V6 - CANL output voltage, V ** Not determined (hysteresis zone) U V UCC Pin 01 (TXD) 0V 0,9 V Pins 06, 07 (CANL, CAN HIGH) 0,5V ΔU7,6 UO(D) UO( R) UCC Pin 04 (RXD) 0,7UCC 0,3UCC 0V 0 toffTXD tonTXD tonRXD t μs toffRXD Fig. 4 –tonTXD, tonRXD, toffTXD, toffRXD parameters measurement timing diagram Rev. 01 HT82C251A U V High level Pin 04 (RXD) Low level Hysteresis 0,5 Udiff V 0,9 Fig. 5 –Vdiff(hys) parameter measurement timing diagram U V Pin 08 (RS) UCC 0 Pin 04 (RXD) 0 tWAKE t μs Fig. 6 – tWAKE parameter measurement timing diagram Rev. 01 HT82C251A U V 1,5 V Pins 07,06 (CAN HIGH, CANL) 0 Pin 04 (RXD) 0 t μs tdRXDL tdRXDL≤15μs Fig. 7 –tdRXDL parameter measurement timing diagram Rev. 01 HT82C251A P8×C592 MCU CTX0 CTX0 CTX1 PX, Y Rext TXD RXD Vref +5V RS VCC HT82C251A CAN HIGH R1 120Ω CAN bus line GND C1 100nF CANL R2 120Ω Fig. 8 – Application diagramm Rev. 01 HT82C251A SOP8 package information Dimensions Ref. Millimeters Min. Typ. A Inches Max. Min. Typ. 1.75 0.069 A1 0.10 A2 1.25 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 D 4.80 4.90 5.00 0.189 0.193 0.197 E 5.80 6.00 6.20 0.228 0.236 0.244 E1 3.80 3.90 4.00 0.150 0.154 0.157 e 0.25 Max 0.004 0.010 0.049 1.27 0.050 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 L1 k ccc 1.04 0° 0.040 8° 0.10 0° 8° 0.004 Rev. 01 HT82C251A MiniSO8P package information Table 5: MiniSO8 mechanical data Dimensions Ref. Millimeters Min. Typ. A Inches Max. Min. Typ. 1.1 A1 0 A2 0.75 b Max. 0.043 0.15 0 0.95 0.030 0.22 0.40 0.009 0.016 c 0.08 0.23 0.003 0.009 D 2.80 3.00 3.20 0.11 0.118 0.126 E 4.65 4.90 5.15 0.183 0.193 0.203 E1 2.80 3.00 3.10 0.11 0.118 0.122 0.80 0.016 e L 0.85 0.65 0.40 0.60 0.006 0.033 0.026 0.024 L1 0.95 0.037 L2 0.25 0.010 k ccc 0° 0.037 8° 0.10 0° 0.031 8° 0.004 Rev. 01 HT82C251A QFN16(3*3) package information Rev. 01 HT82C251A DIP8 package information D A E H 8 5 E1 1 4 NOTE 8 b2 c B END VIEW TOP VIEW WITH LEADS CONSTRAINED NOTE 5 A2 A e/2 NOTE 3 L SEATING PLANE A1 C D1 M e 8X SIDE VIEW b 0.010 eB END VIEW M C A M B M NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: INCHES. 3. DIMENSIONS A, A1 AND L ARE MEASURED WITH THE PACKAGE SEATED IN JEDEC SEATING PLANE GAUGE GS−3. 4. DIMENSIONS D, D1 AND E1 DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS ARE NOT TO EXCEED 0.10 INCH. 5. DIMENSION E IS MEASURED AT A POINT 0.015 BELOW DATUM PLANE H WITH THE LEADS CONSTRAINED PERPENDICULAR TO DATUM C. 6. DIMENSION E3 IS MEASURED AT THE LEAD TIPS WITH THE LEADS UNCONSTRAINED. 7. DATUM PLANE H IS COINCIDENT WITH THE BOTTOM OF THE LEADS, WHERE THE LEADS EXIT THE BODY. 8. PACKAGE CONTOUR IS OPTIONAL (ROUNDED OR SQUARE CORNERS). DIM A A1 A2 b b2 C D D1 E E1 e eB L M INCHES MIN MAX −−−− 0.210 0.015 −−−− 0.115 0.195 0.014 0.022 0.060 TYP 0.008 0.014 0.355 0.400 0.005 −−−− 0.300 0.325 0.240 0.280 0.100 BSC −−−− 0.430 0.115 0.150 −−−− 10 ° MILLIMETERS MIN MAX −−− 5.33 0.38 −−− 2.92 4.95 0.35 0.56 1.52 TYP 0.20 0.36 9.02 10.16 0.13 −−− 7.62 8.26 6.10 7.11 2.54 BSC −−− 10.92 2.92 3.81 −−− 10 ° NOTE 6 Rev. 01