amis-4168x - fault t olerant can t ransceiver feature sheet amis-4168x - fault t olerant can t ransceiver feature sheet ami semiconductor amis-4168x fault tolerant can transceiver product description key features important characteristics note: the parameters v cm -peak and v cm -step guarantee low electromagnetic emission. ? support for 3.3v and 5v can controller interface 3.3v interface: amis-41683 5v interface: amis-41682 ? fully compatible with the iso 11898-3 standard ? optimized for in-car low-speed communication baud rate up to 125kbaud up to 32 nodes can be connected v ery low electromagnetic emission (eme) due to built-in slope control function and a very good matching of the canl and canh bus outputs fully integrated receiver filters permanent dominant monitoring of transmit data input differential receiver with wide common-mode range for low electromagnetic susceptibility (ems) in normal- and low-power modes esd pr otection guaranteed up to +/-8kv transmit data (txd) dominant time-out function ? management in case of bus failure in the event of bus failur es, automatic switching to single-wire mode, even when the canh bus wire is short circuited to vcc the device will automatically r eset to differential mode if the bus failur e is r emoved during failure modes there is full wake-up capability ? pr otection short-circuit proof to battery and ground thermal protection the bus lines are protected against transients in an automotive environment an un-powered node does not disturb the bus lines ? support for low power modes low curr ent sleep and standby mode with wake-up via the bus lines power -on-r eset flag on the output t wo-edge sensitive wake-up input signal via pin sleep the amis-41682 and the amis-41683 are fault tolerant can transceivers with 5v and 3.3v compatible interfaces to the can contr oller. the transceivers work as the interface between the can pr otocol controller and the physical wir es of the can bus. they are primarily intended for low speed applications, up to 125kbaud, in passenger cars. the devices provide differential transmit capability to the can bus and differential receive capability to the can controller. to reduce eme, the rise and fall slope are limited. excellent matching of canl and canh output stages that allow the use of an unshielded twisted pair or a parallel pair of wires for the bus lines. the symmetry of the outputs is guaranteed through the parameters v cm -peak and v cm -step. the failur e detection logic automatically selects a suitable transmission mode, dif ferential or single-wire transmission. these products consolidate the expertise of amis in car multiplex transceivers and adds to the growing line of transceiver products currently available: amis-30522 (van), amis-30660 and amis-30633 (can high-speed 5v and 3.3v), amis-30600 (lin), and amis-42665 (can high-speed 5v - low power, sleep and vsplit circuit). symbol parameter conditions min. max. units v canh dc voltage at pin canh, canl 0 < vcc < 5.25v ; no time limit -40 +40 v v bat v oltage at pin vbat load-dump 40 v v cm -peak common-mode peak see data sheet -1.5 1.5 v v cm -step common-mode variation see data sheet -0.5 0.5 v
amis-4168x - fault t olerant can t ransceiver feature sheet amis-4168x - fault t olerant can t ransceiver feature sheet ami semiconductor www.amis.com devices sold by amis ar e cover ed by the warranty and patent indemnification pr ovisions appearing in its t erms of sale only . amis makes no warranty , express, statutory, implied or by description, regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. amis makes no warranty of merchantability or fitness for any purposes. amis reserves the right to discontinue production and change specifications and prices at any time and without notice. ami semiconductor's products are intended for use in commercial applications. applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment, are specifically not recommended without additional processing by amis for such applications. copyright ?2005 ami semiconductor , inc. m-20629-001 ko block diagram canh canl rth driver control thermal s hutdown por mode & wake-up control filter timer receiver failure handling amis-4168x rtl inh wake stb en txd err rxd vbat vcc 1 2 3 4 5 6 7 8 9 10 11 12 14 p gnd 13 vcc ( * ) vcc ( * ) 8 9 1 0 1 1 1 2 1 3 14 1 2 3 4 5 6 7 i nh t xd r xd e rr s tb e n w ake v bat r tl r th g nd c anl c anh v cc a m i s - 4 1 6 8 x pc20041029.1 pin name description 1 inh inhibit output for external voltage regulator 2 txd transmit data input; internal pull-up current 3 rxd receive data output 4 err-b error; wake-up and power-on flag; active low 5 stb-b standby digital control input; active low; pull-down resistor 6 en standby digital control input; active high; pull-down resistor 7 wake-b enable digital control input; falling and rising edges are both detected 8 rth pin for external termination resistor at canh 9 rtl pin for external termination resistor at canl 10 vcc 5v supply input 11 canh bus line; high in dominant state 12 canl bus line; low in dominant state 13 gnd ground 14 bat battery supply part n amis-41682aga i/o voltage 5.0v package soic 150 14 green & idem temp. range -40c125c part n AMIS-41683AGA i/o voltage 3.3v package soic 150 14 green & idem temp. range -40c125c ordering codes typical application amis-41682 rtl rth canh canl gnd vcc vbat wake 5v-reg vbat en err stb rxd txd vcc inh 2 1 3 4 5 6 7 8 9 10 11 12 13 14 in out can controller gnd can bus line pc20050610.1 * * optional contact your local sales office at www.amis.com/sales for more information. pin description
|
