L9637D

® L9637D 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 ORDERING NUMBER: L9637D 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 L9637D is a monolithic integrated circuit containing standard ISO 9141 compatible interface functions. VCC VS RTX RL O RRX K IK OFF + 1,75V TX + LI IL I RX + LO GND September 2002 1/10 L9637D 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 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 Min. 160 150 130 155 Typ. Max. 200 200 180 Unit °C °C °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 2/10 L9637D 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 VKhys 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 ≤ RLRX 10MΩ ≤ RLLO 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 LO output status HIGH 4.5V ≤ VS ≤ 18V LO output status HIGH 18V < VS VLIhigh - VLIlow or VLI ≤ VS VS, VCC ≥ 0 VS, VCC = open 40 20 -5 or 10 30 Ω -24 -24 0.55VS 12 0.025 VS 4 -5 Test Condition Min. 4.5 3 -40 1.4 IO U T M IN IO U T > IO U T M IN I O U T < IO U T M IN t 7/10 L9637D Figure 6: EMS Performance (ISO 9141 BUS system). = V S = 1 2V 510 Ohm VS 50 Ohm TX IS O i n te rfa c e K 136 Ohm NAP - 73 S MG 1 0k H z 1 .5 n F P im a x = 5 W 0 .1 - 1 0 0 0 M H z P ro b e 4 0 dB R h o d e & S c h w a rtz 68 Ohm VS D Pi K RX IS O i n te rfa c e Signal comparison 10 D£ ∆≤± 10% % NAP Figure 7. P i(m W ) 10000 n o t i n c id e n t p o w e r re s i s ta n t 5000 1000 in c id e n t p o w e r r e s is t a n t 100 1 10 100 1000 f (M H z) 8/10 L9637D 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). 9/10 L9637D Information 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. The ST logo is a registered trademark of STMicroelectronics © 2002 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 10/10