TECHNICAL DATA CAN TRANSCEIVER ILA82C251 The ILA82C251 is the interface between the CAN protocol controller and the physical bus. The device provides differential transmit capability to the bus and differential receive capability to the CAN controller. The IC is intended MS-012AA (SO-8) plastic package for automotive electronic applications ORDERING INFORMATION Fig 1 – External view of packaged IC Operating Temperature Range Package ILA82C251D Tj = -40 to 125 C SOP-8 Tube ILA82C251DT Tj = -40 to 125 C SOP-8 Tape & Reel Device Shipping FEATURES Fully compatible with the “ISO 11898-24 V” standard Thermally protected Short-circuit proof Three mode operation An unpowered node does not disturb the bus lines At least 110 nodes can be connected High speed of data transfer (up to 1 Mbit/s) High immunity against electromagnetic interference. Permissible value of electrostatic potential is 2000V. The IC is realized in 8-pin plastic SO package ( MS-012AA) TXD 01 08 RS GND 02 07 CANL VCC 03 06 CANL RXD 04 05 Vref Fig. 2 – Pin layout 1 May 2011, Ver.01 ILA82C251 Table 1 – Pin description Pin number 01 02 03 04 05 06 07 08 - Pad number 01 02 03 05 06 07 08 09 04 Symbol TXD GND VCC RXD Vref CANL CANH RS - Description Transmit data input (transmitter) Ground Supply voltage Receive data output (receiver) Reference voltage output LOW-level CAN voltage input/output HIGH-level CAN voltage input/output Mode set input Not bonded VCC 01 TXD Protection block Input signal block 03 VT1 Driver VD1 08 RS Switch mode block 07 CAN HIGH 04 RXD Receiver 06 CANL VD2 05 Vref Reference voltage VT2 02 GND VD1, VD2 – diodes; VT1, VT2 - transistors Fig. 3 – Block diagram May 2011, Ver.01 2 ILA82C251 Table 2 – Absolute maximum ratings Symbol Target Parameter Unit VCC 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 V Tstg Storage temperature -60 150 o Tj Junction temperature - 150 o C C * 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 under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Table 3 – Recommended operating condition Symbol VCC VCAN Target Parameter Supply voltage Input/output high and low level voltage of CAN - signal Min 4.5 Max 5.5 -36 36 Unit V V May 2011, Ver.01 3 ILA82C251 Table 4 – Electric parameters at -40 ≤Tamb ≤ +125C 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 k 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 0.7 VCC VCC+0.3 Unit mA V -0.3 -200 0.3 VCC 30 V A -200 -100 A 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 May 2011, Ver.01 4 ILA82C251 Table 4 continued Symbol V6,7 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 V1 = 4.0 V, no load -0.5 0.05 CANH short-circuit mA 4.5 V VCC 5.5 V ISC7 current -200 V7 = -5.0 V CANL signal shortmA 4.5 V VCC 5.5 V ISC6 circuit current 200 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) -1.0 0.5 V 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) 0.9 1.0 5.0 5.0 0.97 0.91 5.0 5.0 4.5 V VCC 5.5 V I4 = -100 A 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 k 4.5 V VCC 5.5 V 20 100 k 4.5 V VCC 5.5 V -7.0 V (V6, V7) 12 V 4) 4.5 V VCC 5.1 V 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 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 A 0.45 VCC 0.55 VCC 0.4 VCC 0.6 VCC V May 2011, Ver.01 5 ILA82C251 Table 4 continued Symbol tbit tonTXD toffTXD tonRXD toffRXD tWAKE tdRXDL Vstb Islope Vslope Target Min Max Timing parameters (RL = 60 , CL = 100 pF, unless otherwise specified) One bit transmitting 1.0 4.5 V VCC 5.5 V minimum time R8 = 0 Input data transfer to 50 4.5 V VCC 5.5 V active bus delay R8 = 0 Input data transfer to 80 4.5 V VCC 5.5 V inactive bus delay R8 = 0 Input data transfer to 120 4.5 V VCC 5.5 V active receiver delay R8 = 0 550 4.5 V VCC 5.5 V R8 = 47 k Input data transfer to 190 4.5 V VCC 5.5 V inactive receiver delay R8 = 0 400 4.5 V VCC 5.5 V R8 = 47 k Wake-up time from 20 4.5 V VCC 5.5 V standby mode (via 08 pin) Bus input data transfer 3.0 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 Input voltage for 0.75 VCC 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 Measurement mode Unit s ns ns ns ns s s V A 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) May 2011, Ver.01 6 ILA82C251 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 k VCC from 4.5 to 5.5 V; V7 = -36 V 7.0 V/s -100 mA FUNCTIONAL DESCRIPTION The INA82C251 provides differential transmit capability to the bus and differential receive capability 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 60 load. ILA82C251D 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 ILA82C251D 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 high-speed 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 60 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 A. 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. May 2011, Ver.01 7 ILA82C251 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 A -IRs 200 A Standby Slope control (Reduced RFI) High – speed VRs 0.3 VCC RS pin resulting voltage or current - IRs 10 A 0.4 VCC VRs 0.6 VCC - IRs 500 A May 2011, Ver.01 8 ILA82C251 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 VDIFF = V7 – V6 , (1) V7 – CANH output voltage, V; V6 - CANL output voltage, V ** Not determined (hysteresis zone) U V Pin 01 (TXD) UCC 0V Pins 06, 07 (CANL, CAN HIGH) 0,9 V 0,5V U7,6 UO(D) UO( R) UCC Pin 04 (RXD) 0,7UCC 0,3UCC 0V 0 toffTXD tonTXD t s toffRXD tonRXD Fig. 4 –tonTXD, tonRXD, toffTXD, toffRXD parameters measurement timing diagram May 2011, Ver.01 9 ILA82C251 U V High level Pin 04 (RXD) Low level Hysteresis Udiff V 0,9 0,5 Fig. 5 –Vdiff(hys) parameter measurement timing diagram U V UCC Pin 08 (RS) 0 Pin 04 (RXD) 0 t s tWAKE Fig. 6 – tWAKE parameter measurement timing diagram May 2011, Ver.01 10 ILA82C251 U V 1,5 V Pins 07,06 (CAN HIGH, CANL) 0 Pin 04 (RXD) 0 t s tdRXDL tdRXDL≤15s Fig. 7 –tdRXDL parameter measurement timing diagram May 2011, Ver.01 11 ILA82C251 P8C592 MCU CTX0 CTX0 CTX1 PX, Y Rext TXD RXD Vref +5V RS VCC ILA82C251D GND C1 100nF CANL CAN HIGH R1 120 CAN bus line R2 120 Fig. 8 – Application diagramm May 2011, Ver.01 12 ILA82C251 Package Dimensions D 05 01 H E 1 08 04 hx45 C A 1 c Mounting plane e L b 0,25 (0,010) M D min max 4.80 4.95 E1 3.86 4.00 H b 5.84 0.35 6.20 0.51 C e mm 0 1.27 8 A A1 1.35 0.10 1.75 0.25 c L h 0.19 0.40 0.25 0.25 0.89 0.50 Fig. 9 –MS-012AA package dimensions May 2011, Ver.01 13