ILA82C251 IKSEMICON | Alldatasheet
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Technical content
May 2011, Ver.01 CAN TRANSCEIVER 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 for automotive electronic applications MS-012AA (SO-8) plastic package Fig 1 – External view of packaged IC
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) Fig. 2 – Pin layout 01 08 02 07 03 06 TXD GND VCC RXD Vref CANL CANL RS
ORDERING INFORMATION
ILA82C251D Tj = -40 to 125 C SOP-8 Tube ILA82C251DT Tj = -40 to 125 C SOP-8 Tape & Reel ILA82C251
May 2011, Ver.01 Table 1 – Pin description Pin num- ber Pad number Symbol Description 01 01 TXD Transmit data input (transmitter) 02 02 GND Ground 03 03 VCC Supply voltage 04 05 RXD Receive data output (receiver) 05 06 Vref Reference voltage output 06 07 CANL LOW-level CAN voltage input/output 07 08 CANH HIGH-level CAN voltage input/output 08 09 RS Mode set input - 04 - Not bonded VD1, VD2 – diodes; VT1, VT2 - transistors Fig. 3 – Block diagram Driver Protection block Switch mode block Receiver Reference voltage VD2 VD1 VT1 TXD RS RXD Vref VCC CAN HIGH CANL VT2 GND Input signal block
May 2011, Ver.01 Table 2 – Absolute maximum ratings Symbol Parameter Target Unit Min Max VCC Supply voltage -0.3 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 oC Tj Junction temperature - 150 oC * 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 Parameter Target Unit Min Max VCC Supply voltage 4.5 5.5 V VCAN Input/output high and low level voltage of CAN - signal -36 36 V
May 2011, Ver.01 Table 4 – Electric parameters at -40 ≤Tamb ≤ +125C Symbol Parameter Measurement mode Target Unit Min Max Supply I3 Supply current Dominant; V1 = 1.0 V, VCC 5.1 V - 78 mA Dominant; V1 = 1.0 V, VCC 5.25 V - 80 Dominant; V1 = 1.0 V, VCC 5.5 V - 85 Recessive; V1 = 4.0 V, R8 = 47 k - 10 Standby mode 1) - 0.315 Standby mode 2) - 0.275 Transmitter VIH High-level input voltage Output recessive 0.7 VCC VCC+0.3 V VIL Low-level input voltage Output dominant -0.3 0.3 VCC V IIH High-level input current 4.5 V VCC 5.5 V V1 = 4.0 V -200 30 A IIL Low-level input current 4.5 V VCC 5.5 V V1 = 1.0 V -200 -100 A V6,7 Recessive bus voltage 4.5 V VCC 5.5 V V1 = 4.0 V, no load 2.0 3.0 V ILO Off-state output lea k- age current 4.5 V VCC 5.5 V -2.0 2.0 mA 4. 5 V VCC 5.5 V -10 10 V7 CANH output voltage 4.75 V VСС 5.5 V V1 = 1.0 V 3.0 4.5 V V1 = 1.0 V 4.5 V VСС 4.75 V 2.75 4.5 V6 CANL output voltage 4.5 V VCC 5.5 V V1 = 1.0 V 0.5 2.0 V
May 2011, Ver.01 Table 4 continued Symbol Parameter Measurement mode Target Unit Min Max V6,7 difference between output voltage at pins 6 and 7 4.5 V VCC 5.5 V V1 = 1.0 V 1.5 3.0 V V1 = 4.0 V, no load -0.5 0.05 ISC7 CANH short-circuit current 4.5 V VCC 5.5 V V7 = -5.0 V -200 mA ISC6 CANL signal short - circuit current 4.5 V VCC 5.5 V V6 = 36 V 200 mA Receiver (pins 06, 07 are externally controlled, V4 = 4.0 V, -2.0 V (V6, V7) 7.0 V, unless otherwise specified) VDIFF(R) Differential input volt- age (recessive mode) 3) -1.0 0.5 V 4.5 V VCC 5.5 V -1.0 0.4 VDIFF(D) Differential input vol t- age (dominant mode) - 0.9 5.0 V 4.5 V VCC 5.5 V 1.0 5.0 4) 0.97 5.0 4.5 V VCC 5.1 V 0.91 5.0 VOH High-level output volt- age (pin 4) 4.5 V VCC 5.5 V I4 = -100 A
0.8 VCC VCC V
VOL Low-level output volt- age (pin 4) 4.5 V VCC 5.5 V I4 = 1.0 mA 0 0.2 VCC V 4.5 V VCC 5.5 V I4 = 10 mA 0 1.5 RI CANL and CANH input resistance l 4.5 V VCC 5.5 V 5.0 25 k RDIFF Differential input resistance 4.5 V VCC 5.5 V 20 100 k Reference voltage VREF Reference voltage 4.5 V VCC 5.5 V V8 = 1.0 V, I5 50 мкА 0.45 VCC 0.55 VCC V 4.5 V VCC 5.5 V 0.4 VCC 0.6 VCC
May 2011, Ver.01 Table 4 continued Symbol Parameter Measurement mode Target Unit Min Max Timing parameters (RL = 60 , CL = 100 pF, unless otherwise specified) tbit One bit transmitting minimum time 4.5 V VCC 5.5 V R8 = 0 - 1.0 s tonTXD Input data transfer to active bus delay 4.5 V VCC 5.5 V R8 = 0 - 50 ns toffTXD Input data transfer to inactive bus delay 4.5 V VCC 5.5 V R8 = 0 - 80 ns tonRXD Input data transfer to active receiver delay 4.5 V VCC 5.5 V R8 = 0 - 120 ns 4.5 V VCC 5.5 V R8 = 47 k - 550 toffRXD Input data transfer to inactive receiver delay 4.5 V VCC 5.5 V R8 = 0 - 190 ns 4.5 V VCC 5.5 V R8 = 47 k - 400 tWAKE Wake-up time from standby mode (via 08 pin) 4.5 V VCC 5.5 V - 20 s tdRXDL Bus input data transfer delay to low on output of received data 4.5 V VCC 5.5 V V8 = 4.0 V - 3.0 s Standby mode and low RFI mode Vstb Input voltage for standby mode 4.5 V VCC 5.5 V
0.75 VCC - V
Islope Input current for low RFI mode 4.5 V VCC 5.5 V - 200 - 10 A Vslope Input voltage for low RFI mode 4.5 V VCC 5.5 V 0.4 VCC 0.6 VCC V 1) I1 = I4 = I5 = 0 mA, V8 = VCC 2) I1 = I4 = I5 = 0 mA, V8 = VCC, Tamb 90 oC. 3) For the receiver in all modes. 4) Standby mode
May 2011, Ver.01 Table 5 Typical values of electric parameters Symbol Parameter Measurement mode Typical val- ue Unit Vdiff(hys) Differential hysteresis voltage VCC from 4.5 to 5.5 V 150 mV |SR| CANH, CANL slew rate VCC from 4.5 to 5.5 V; R8 = 47 k
7.0 V/s
ISC7 High level CAN short circuit current VCC from 4.5 to 5.5 V; V7 = -36 V -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 provide s three operation modes: high -speed, reduced RFI mode, standby mode . The design of ILA82C251D permits possibility of adjustment of rise and fall slope of out- put stages (transistors). Pin R S 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 R S to ground.To reduce RFI, connect pin R S 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 v oltage (~ 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 con- nected 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 de- creased. Reference voltage value VREF per 05 output is half of supply voltage.
May 2011, Ver.01 Table 6 - Truth table of the transceiver Supply volt- age range, VCC, V TXD pin CANH pin CANL pin Bus state RXD output 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 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 RS pin resulting voltage or current VRs 0.75 VCC Standby - IRs 10 A 10 A -IRs 200 A Slope control (Reduced RFI) 0.4 VCC VRs 0.6 VCC VRs 0.3 VCC High – speed - IRs 500 A
May 2011, Ver.01 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) Fig. 4 –tonTXD, tonRXD, toffTXD, toffRXD parameters measurement timing diagram tonTXD U V Pin 01 (TXD) Pins 06, 07 (CANL, CAN HIGH) Pin 04 (RXD) 0,9 V 0,5V 0,3UCC 0,7UCC UCC 0 V UO(D) UO( R) UCC 0 V t tonRXD toffTXD toffRXD U7,6
May 2011, Ver.01 Fig. 5 –Vdiff(hys) parameter measurement timing diagram Fig. 6 – tWAKE parameter measurement timing diagram U V t Pin 08 (RS) Pin 04 (RXD) UCC tWAKE U V Pin 04 (RXD) Hysteresis 0,5 0,9 High level Low level Udiff V
May 2011, Ver.01 tdRXDL≤15s Fig. 7 –tdRXDL parameter measurement timing diagram U V t Pins 07,06 (CAN HIGH, CANL) Pin 04 (RXD) 1,5 V tdRXDL
May 2011, Ver.01 Fig. 8 – Application diagramm P8C592 MCU Vref CTX0 CTX0 CTX1 PX, Y TXD 100nF RS RXD CAN HIGH CANL ILA82C251D CAN bus line Rext 120 120 + 5 V VCC GND
May 2011, Ver.01 Package Dimensions M D E C A e b C0,25 (0,010) H c L hx45 01 04 0508 Mounting plane D E1 H b e A A1 c L h mm Fig. 9 –MS-012AA package dimensions