L9638D

L9638 LIN BUS TRANSCEIVER 1 ■ ■ ■ ■ ■ FEATURES Single-wire transceiver for LIN-protocol Transmission rate up to 20 kbaud Operating power supply voltage range 6V ≤ Vs ≤ 26V (40V for transients) Low quiescent current in sleep mode (typ.10µA) Wake-up through LIN-bus, Enable input (from µC CMOS compatible) or Wake-up input (edge driven) Wide input and output range -24V ≤ VLIN ≤ Vs Integrated pull/down/up resistors for LIN, TxD, RxD, EN, INH Inhibit output with low resistance (0)>t gts 1 and no wake up event TxD RxD WUP LIN float float 0 1 float float 0 1 EN 0 0 INH Vs Vs S HORT CIRCUIT TxD RxD WUP LIN HiZ HiZ X 0 EN 0 INH 0 EN if t (LIN=0 after ->0)>t LINgs 1 W UP LIN if (LIN=1) SLEEP TxD RxD WUP LIN H iZ HiZ X 1 EN 0 INH 0 if t(EN=1 after ->1)>t ENgs 0 W UP t delay=t W UPgs X HiZ don’t care, input signal is stable high or low internal pull up is switched off; T xD input signal may be high or low or transitioning RxD output signal is high impedance. input signal may be high or low or transitioning float 10/14 L9638 Figure 7. Typical Application Circuit VBAT VS CS RS EXTERNAL SWITCH 3 RLIN VS 8 1 WUP VS 7 LIN 6 LIN BUS CLIN EN RES VCR WD Vo VCW 6 7 5 L4979D L9638D WD VCC CO RES µC GND RXD TXD EN 1 4 2 RXD TXD EN 3 4 CTR GND 2 GND 5 INH 8 CTW Suggested Values CS =100 nF CTR = 1 nF CTW = 47 nF CO = 10 µF CLIN_MASTER = 1 nF CLIN_SLAVE = 220 pF RS = 100 kΩ RLIN = 1 kΩ 11/14 L9638 mm DIM. MIN. A A1 A2 B C D (1) E e H h L k ddd Note: inch MAX. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 MIN. 0.053 0.004 0.043 0.013 0.007 0.189 0.15 0.050 6.20 0.50 1.27 0.228 0.010 0.016 0.244 0.020 0.050 TYP. MAX. 0.069 0.010 0.065 0.020 0.010 0.197 0.157 TYP. OUTLINE AND MECHANICAL DATA 1.35 0.10 1.10 0.33 0.19 4.80 3.80 1.27 5.80 0.25 0.40 0˚ (min.), 8˚ (max.) 0.10 0.004 (1) Dimensions D does not include mold flash, protrusions or gate burrs. Mold flash, potrusions or gate burrs shall not exceed 0.15mm (.006inch) in total (both side). SO-8 0016023 C 12/14 L9638 Table 6. Revision History Date Revision Description of Changes April 2004 April 2004 1 2 First Issue Changed maturity from Product Preview in Final; Corrected Order Codes; Changed min. value of the item 1.4 of the Table 4 in the page 3. Add VESD in table 3; Changed numbers item of the table 5 and add item 9 Updated figure 7 on page11/14. October 2004 October 2004 3 4 13/14 L9638 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. Specifications 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. All other names are the property of their respective owners © 2004 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 14/14