L9637

® L9637 ISO 9141 INTERFACE OPERATING POWER SUPPLY VOLTAGE RANGE 4.5V ≤ VS ≤ 36V (40V FOR TRANSIENTS) REVERSE SUPPLY (BATTERY) PROTECTED DOWN TO VS ≥ -24V STANDBY MODE WITH VERY LOW CURRENT CONSUMPTION ISSB 1µA @ VCC 0.5V LOW QUIESCENT CURRENT IN OFF CONDITION ISOFF = 120µA TTL COMPATIBLE TX INPUT BIDIRECTIONAL K-I/O PIN WITH SUPPLY VOLTAGE DEPENDENT INPUT THRESHOLD OVERTEMPERATURE SHUT DOWN FUNCTION SELECTIVE TO K-I/O PIN WIDE INPUT AND OUTPUT VOLTAGE RANGE -24V ≤ VK ≤ VS K OUTPUT CURRENT LIMITATION, TYP IK = 60mA DEFINED OFF OUTPUT STATUS IN UNDERVOLTAGE CONDITION AND VS OR GND INTERRUPTION CONTROLLED OUTPUT SLOPE FOR LOW EMI HIGH INPUT IMPEDANCE FOR OPEN VS OR GND CONNECTION BLOCK DIAGRAM SO8 Minidip ORDERING NUMBERS: L9637D L9637 DEFINED OUTPUT ON STATUS OF LO OR RX FOR OPEN LI OR K INPUTS DEFINED K OUTPUT OFF FOR TX INPUT OPEN INTEGRATED PULL UP RESISTORS FOR TX, RX AND LO EMI ROBUSTNESS OPTIMIZED DESCRIPTION The L9637 is a monolithic integrated circuit containing standard ISO 9141 compatible interface functions. VCC VS RTX RL O RRX K IK OFF + 1, 75 V TX + LI IL I RX + LO GND December 1998 1/11 L9637 ABSOLUTE MAXIMUM RATINGS (No damage or latch) Symbol VS VCC ∆VS/dt VLI, K VLO, RX, TX Supply Voltage ISO transients t = 400ms Stabilized Voltage Supply Voltage transient Pin Voltage Pin Voltage Parameter Value -24 to +36 -24 to +40 -0.3 to +7 -10 to +10 -24 to VS -24 to VCC Unit V V V V/µs V V Note: Max. ESD voltages are ±2kV with human body model C = 100pF, R = 1.5k corresponds to maximum energy dissipation 0.2mJ according to MIL883C. PIN CONNECTION (Top view) RX 1 8 LI LO 2 U537 7 VS VCC 3 6K TX 4 5 GND THERMAL DATA Symbol TJSDon TJSDoff Rth j-amb Parameter Temperature K shutdown switch on threshold Temperature K shutdown switch off threshold Thermal steady state junction to ambient resistance for SO8 Thermal steady state junction to ambient resistance for Minidip Min. 160 150 130 80 155 100 Typ. Max. 200 200 180 120 Unit °C °C °C/W °C/W PIN DESCRIPTION N. 1 2 3 4 5 6 7 8 Name RX LO VCC TX GND K VS LI Output for K as input Output L comparator Stabilized voltage supply Input for K as output Common GND Bidirectional I/O Supply voltage Input L comparator Function 2/11 L9637 ELECTRICAL CHARACTERISTICS (The electrical characteristics are valid within the below defined operating conditions, unless otherwise specified. The function is guaranteed by design until TJSDon temperature shutdown switch-on-threshold.) Symbol VS VCC Tj ICC Parameter Supply Voltage Stabilized Voltage Junction temperature Supply VCC Current VCC ≤ 5.5V; VLI,VTX = 0V VK ≥ VKhigh; VLI ≥ VLIhigh VTX = VCC @ VCC ≤ 5.5V VS ≤ 16V; VLI, VTX = 0V VK ≥ VKhigh; VLI ≥ VLIhigh VTX ≥ VTXhigh @ VS ≤ 12V VCC ≤ 0.5V @ VS ≤ 12V Input Voltage Low state RX output status LOW 4.5V ≤ VS ≤ 18V RX output status LOW 18V < VS VKhigh Input Voltage High state RX output status HIGH 4.5V ≤ VS ≤ 18V RX output status HIGH 18V < VS VK hys IKoff Input Threshold Hysteresis Input Current VKhigh - VKlow @ VTX ≥ VTXhigh VK ≤ VS VS, VCC ≥ 0 VS, VCC = open @ VS ≥ 6.5V VTX ≤ VTXlow IK ≥ 7mA 1) 30 -24 2.5 VK ≤ VKlow; VLI ≤ VLIlow VS ≥ 6.5V IRX, LO ≥ 1mA 1) 9 10MΩ ≤ R LRX 10MΩ ≤ R LLO Output status = (HIGH) -0.15V ≤ VLO ≤ VCC + 0.15V -0.15V ≤ VRX ≤ VCC + 0.15V -0.15V ≤ VTX ≤ VCC + 0.15V LO output status LOW 4.5V ≤ VS ≤ 18V LO output status LOW 18V < VS VL high Input voltage HIGH state LO output status HIGH 4.5V ≤ VS ≤ 18V LO output status HIGH 18V < VS VLI hys ILI Input threshold hysteresis Input current VLIhigh - VLIlow VLI ≤ VS VS, VCC ≥ 0 or VS, VCC = open -5 40 20 -5 or 10 30 Ω -24 -24 0.55VS 12 0.025 VS 4 Test Condition Min. 4.5 3 -40 1.4 -5 IO U T M IN IOUT > IOUT M IN I O U T < IO U T M IN t 7/11 L9637 Figure 6: EMS Performance (ISO 9141 BUS system). = VS = 12V 510 Ohm VS 50 Ohm TX IS O i n te rf a c e K 136 Ohm N A P - 73 SMG 10k Hz 1 . 5n F P im a x = 5 W 0 .1 - 1 0 0 0M H z P ro b e 4 0dB R h o d e & S c h w a rt z 68 Ohm VS D Pi K RX IS O i n te rf a c e Signal comparison NAP ∆≤± 10% % D£ 10 Figure 7. P i(m W ) 1 0000 n o t i n c id e n t p o w e r re s i s ta n t 50 00 10 00 in c id e n t p o w e r r e s is t a n t 10 0 1 10 10 0 1 0 00 f (M H z) 8/11 L9637 mm MIN. A a1 a2 a3 b b1 C c1 D (1) E e e3 F (1) L M S 3.8 0.4 4.8 5.8 1.27 3.81 4.0 1.27 0.6 8 ° (max.) 0.15 0.016 0.65 0.35 0.19 0.25 0.1 TYP. MAX. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 0.026 0.014 0.007 0.010 0.004 MIN. inch TYP. MAX. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 DIM. OUTLINE AND MECHANICAL DATA 45° (typ.) 5.0 6.2 0.189 0.228 0.050 0.150 0.157 0.050 0.024 0.197 0.244 SO8 (1) D and F do not include mold flash or protrusions. Mold flash or potrusions shall not exceed 0.15mm (.006inch). 9/11 L9637 DIM. MIN. A a1 B b b1 D E e e3 e4 F I L Z 3.18 7.95 2.54 7.62 7.62 6.6 5.08 3.81 1.52 0.125 0.51 1.15 0.356 0.204 1.65 0.55 0.304 10.92 9.75 0.313 0.100 0.300 0.300 0.260 0.200 0.150 0.060 mm TYP. 3.32 0.020 0.045 0.014 0.008 0.065 0.022 0.012 0.430 0.384 MAX. MIN. inch TYP. 0.131 MAX. OUTLINE AND MECHANICAL DATA Minidip 10/11 L9637 I nformation furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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