AMIS41682AGA - AMI Semiconductor, Inc.

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

1.0 General Description

The new AMIS-4168x is an interface between the protocol controller

and the physical wires of the bus lines in a control area network (CAN).

The new AMIS-41683 is identical to the AMIS-41682 but has a true 3.3V

digital interface to the CAN controller.

The device provides differential transmit capability but will switch in

error conditions to single-wire transmitter and/or receiver. Initially it will

be used for low speed applications, up to 125kBaud, in passenger cars.

The AMIS-41682 is implemented in I2T100 technology enabling both

high-voltage analog circuitry and digital functionality to co-exist on the

same chip.

This product consolidates the expertise of AMIS for in car multiplex

transceivers and supports together with AMIS-30522 (VAN), AMIS-

30660 and AMIS-30663 (CAN High Speed), and AMIS-30600 (LIN)

another widely used physical layer.

2.0 Key Features

• Optimized for in-car low-speed communication

° Baud rate up to 125kBaud

° Up to 32 nodes can be connected

° Due to built-in slope control function and a very good matching of

the CANL and CANH bus outputs this device realizes a very low

electro magnetic emission (EME)

° Fully integrated receiver filters

° Permanent dominant monitoring of transmit data input

° Differential receiver with wide common-mode range for high

electro magnetic susceptibility (EMS) in normal- and low-power-

modes

° True 3.3V digital I/O interface to CAN controller for AMIS-41683

only

• Management in case of bus failure

° In the event of bus failures, automatic switching to single-wire

mode, even when the CANH bus wire is short circuited to VCC

° The device will automatically reset to differential mode if the bus

failure is removed

° During failure modes there is full wake-up capability

° Un-powered nodes do not disturb bus lines

• Protection issues

° 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 current sleep and standby mode with wake-up via the bus lines

° Power-on-reset flag on the output

° Two-edge sensitive wake-up input signal via pin SLEEP

3.0 Technical Characteristics

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VCANH DC voltage at pin CANH, CANL 0 < VCC < 5.25V; no time limit -40 +40 V

Vbat Voltage at pin Vbat Load dump +40 V

Table 1: Technical Characteristics

4.0 Ordering Information

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D2CANM AMIS41682AGA SOIC-14 GREEN -40°C...125°C

C2CANN AMIS41683AGA SOIC-14 GREEN -40°C...125°C

Table 2: Ordering Information

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

5.0 Block Diagram

Driver

control

Thermal

shutdown

POR

Mode &

wake-up

control

Filter

Timer

VCC

Receiver

Failure

handling

AMIS-4168x

RTL

CANH

CANL

RTH

INH

WAKE

STB

GND

TxD

ERR

RxD

VBAT VCC

Figure 1: Block Diagram

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

6.0 Typical Application Schematic

6.1 Application Schematic

AMIS-41682

RTL

RTH

CANH

CANL

GND

VCC

VBAT

WAKE

5V-reg

VBAT

ERR

STB

RxD

TxD

VCC INH

OUT

CAN

controller

GND

CAN BUS LINE

PC20041029.3

Figure 2: Appplication Diagram AMIS-41682

AMIS-41683

RTL

RTH

CANH

CANL

GND

VCC

VBAT

WAKE

5V-reg

VBAT

ERR

STB

RxD

TxD

VCC INH

OUT

3.3V CAN

controller

GND

CAN BUS LINE

PC20041029.5

3.3V-

reg

OUT

4.7 kW

Figure 3: Application Diagram AMIS-41683

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

6.2 Pin Description

141

INH

TxD

RxD

ERR

STB

WAKE

VBAT

RTL

RTH

GND

CANL

CANH

VCC

AMIS-4168x

PC20041029.1

Table 3: Pin Description

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1INH Inhibit output for external voltage regulator

2TxD Transmit data input; internal pull-up current

3 RxD Receive data output

4ERR-B Error; wake-up and power-on flag; active low

5 STB-B Standby digital control input; active low; pull-down resistor

6EN Standby digital control input; active high; pull-down resistor

7 WAKE-B Enable digital control input; falling and rising edges are both detected

8RTH 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

Figure 4: Pin Configuration (top view)

:Functional description and characteristics are made for the AMIS-

41682 but are also valid for the AMIS-41683. The difference between

the two devices is explicitly mentioned in text.

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

7.0 Functional Description

7.1 Description

AMIS-41682 is a fault tolerant CAN transceiver which works as an

interface between the CAN protocol controller and the physical wires of

the CAN bus (see Figure 2). It is primarily intended for low speed

applications, up to 125kBaud, in passenger cars. The device provides

differential transmit capability to the CAN bus and differential receive

capability to the CAN controller.

The AMIS-41683 has open-drain outputs (RXD and ERR-B pins) that

allow the user to use external pull-up resistors to the required supply

voltage; this can be 5V or 3.3V.

To reduce EME, the rise and fall slope are limited. Together with

matched CANL and CANH output-stages, this allows 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 VCM-

peak and VCM-step.

The failure detection logic automatically selects a suitable transmission

mode, differential or single-wire transmission.

Together with the transmission mode, the failure detector will configure

the output stages in such a way that excessive current are avoided and

that the circuit returns to normal operation when the error is removed.

A high common-mode range for the differential and single ended

receiver guarantees reception under worst case conditions and together

with the integrated filter the circuit realizes a excellent immunity against

EMS. The receivers connected to pins CANH and CANL have threshold

voltages that ensure a maximum noise margin in single-wire mode.

A timer has been integrated at pin TXD. This timer prevents the

AMIS-41682 from driving the bus lines to a permanent dominant state.

7.2 Failure Detector

The failure detector is fully active in the normal operating mode. After

the detection of a single bus failure the detector switches to the

appropriate mode. The different wiring failures are depicted in Figure 4.

The figure also indicates the effect of the different wiring failures on the

transmitter and the receiver. The detection circuit itself is not depicted.

The differential receiver threshold voltage is typically set at 3V (VCC =

5V). This ensures correct reception with a noise margin as high as

possible in the normal operating mode and in the event of failures 1, 2,

4, and 6a. These failures, or recovery from them, do not destroy

ongoing transmissions. During the failure, reception is still done by the

differential receiver and the transmitter stays fully active.

To avoid false triggering by external RF influences the single-wire modes

are activated after a certain delay time. When the bus failure disappears

for an other time delay, the transceiver switches back to differential

mode.

When one of the bus failures 3, 5, 6, 6a, and 7 is detected, the

defective bus wire is disabled by switching off the affected bus

termination and the respective output stage. A wake-up from sleep

mode via the bus is possible either via a dominant CANH or CANL line.

This ensures that a wake-up is possible even if one of the failures 1 to

7 occurs. If any of the wiring failure occurs, the output signal on pin ERR

will become low. On error recovery, the output signal on pin ERR will

become high again.

During all single-wire transmissions, the EMC performance (both

immunity and emission) is worse than in the differential mode. The

integrated receiver filters suppress any HF noise induced into the bus

wires. The cut-off frequency of these filters is a compromise between

propagation delay and HF suppression. In the single-wire mode, LF noise

cannot be distinguished from the required signal.

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

RTH

CANH

CANL

RTL

RTH

CANH

CANL

RTL

TxD

RxD

ERR

VccVbat

Failure 7 : CANH shorted to CANL

TxD

RxD

ERR

0.6Vcc

0.4Vcc

Error-detection: dominant longer then Tnd_f7

RTH

CANH

CANL

RTL

RTH

CANH

CANL

RTL

TxD

RxD

ERR

Vcc

Vbat

Failure 1 : CANH wire interrupted

TxD

RxD

ERR

0.6Vcc

0.4Vcc

Error-detection: CL = CH more then 4 pulses

RTH

CANH

CANL

RTL

RTH

CANH

CANL

RTL

TxD

RxD

ERR

VccVbat

Failure 2 : CANL wire interrupted

TxD

RxD

ERR

0.6Vcc

0.4Vcc

Error-detection: CL = CH more then 4 pulses

RTH

CANH

CANL

RTL

RTH

CANH

CANL

RTL

TxD

RxD

ERR

Vcc

Vbat

Failure 5 : CANH shorted to Gnd

GND

TxD

RxD

ERR

0.6Vcc

0.4Vcc

Error-detection: CL = CH more then 4 pulses

RTH

CANH

CANL

RTL

RTH

CANH

CANL

RTL

TxD

RxD

ERR

VccVbat

Failure 3 : CANH shorted to Vbat

Vbat

TxD

RxD

ERR

0.6Vcc

0.4Vcc

Error-detection: CANH > 2V longer then Tnd_f3

Vcc

RTH

CANH

CANL

RTL

RTH

CANH

CANL

RTL

TxD

RxD

ERR

VccVbat

Failure 3a : CANH shorted to Vcc

Vcc

TxD

RxD

ERR

0.6Vcc

0.4Vcc

Error-detection: CANH >2V longer then Tnd_f3

RTH

CANH

CANL

RTL

RTH

CANH

CANL

RTL

TxD

RxD

ERR

Vcc

Vbat

Failure 4 : CANL shorted to Gnd

GND

TxD

RxD

ERR

0.6Vcc

0.4Vcc

Error-detection: dominant longer then Tnd_f4

RTH

CANH

CANL

RTL

RTH

CANH

CANL

RTL

TxD

RxD

ERR

VccVbat

Failure 6 : CANL wire shorted to Vbat

Vbat

TxD

RxD

ERR

0.6Vcc

0.4Vcc

Error-detection: CANL>7V

RTH

CANH

CANL

RTL

RTH

CANH

CANL

RTL

TxD

RxD

ERR

VccVbat

Failure 6a : CANL shorted to Vcc

Vcc

TxD

RxD

ERR

0.6Vcc

0.4Vcc

Error-detection: CL = CH more then 4 pulses

Figure 5: Different Types of Wiring Failure

7.3 Low Power Modes

The transceiver provides three low power modes, which can be entered

and exited via pins STB and EN (see Figure 5). (Go-to-sleep mode is only

a transition mode)

The sleep mode is the mode with the lowest power consumption. Pin

INH is switched to high-impedance for deactivation of the external

voltage regulator. Pin CANL is biased to the battery voltage via pin RTL.

If the supply voltage is provided pins RXD and ERR will signal the wake-

up interrupt signal.

The standby mode will react the same as the sleep mode but with a

high-level on pin INH.

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

The power-on standby mode is the same as the standby mode with the

battery power-on flag instead of the wake-up interrupt signal on pin

ERR. The output on pin RXD will show the wake-up interrupt. This mode

is only for reading out the power-on flag.

Wake-up request is detected by the following events:

• Power-on (Vbat was below the battery POR-level of 1V)

• Local wake-up: Rising or falling edge on input WAKE (Levels

maintained for a certain period)

• Remote wake-up: A message with five consecutive dominant bits

On a wake-up request the transceiver will set the output on pin INH

high which can be used to activate the external supply voltage

regulator.

If VCC is provided the wake-up request can be read on the ERR or RXD

outputs, so the external microcontroller can wake-up the transceiver

(switch to normal operating mode) via pins STB and EN.

In the low power modes the failure detection circuit remains partly

active to prevent an increased power consumption in the event of

failures 3, 3a, 4, and 7.

The go-to-sleep-mode is only a transition mode. The pin INH stays active

for a limited time. During this time the circuit can still go to an other

low-power-mode. After this time the circuit go to the sleep-mode. Once

VCC is below the threshold level of POR, the signals on pins STB and EN

will internally be set to low-level to provide fail safe functionality.

STB change state

-O

n S

-b

High Low Act

EN change state

STB change state

1) Only when Vcc > POR_Vcc

2) INH active for a time = T_GoToSleep

3) Local Wake-up through pin Wake which change state

for a time > T_wake_min

Remote Wake-up through pin CANL or CANH when

dominant for a time >TCANH_min or TCANL_min

4) Mode Change through pins STB and EN is only

possible if Vcc > POR_Vcc

STB ERR RxDINHEN RTL

POR-

flag

WU-

int Vbat

l M

High High Act

STB ERR RxDINHEN RTL

Err-

flag

Rec.

out Vcc

y M

Low Low Act

STB ERR RxDINHEN RTL

Vbat

o S

p M

Low High Act

STB ERR RxDINHEN RTL

Vbat

p M

Low Low Hz

STB ERR RxDINHEN RTL

Vbat

WU-

int

WU-

int

WU-

int

WU-

int

WU-

int 1)

WU-

int 1)

EN change state

EN, STB change state

Time-out GoToSleep mode

Local or Remote

Wake-up 3)

Power-On Mode Change 4)

7.4 Power-on

After power-on (VBAT switched on) the signal on pin INH will become

high and an internal power-on flag will be set. This flag can be read in

Figure 6: Low Power Modes

the power-on standby mode via pin ERR (STB = 1; EN = 0) and will be

reset by entering the normal operating mode.

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

8.0 Electrical Characteristics

8.1 Definitions

All voltages are referenced to GND (pin 13). Positive currents flow into

the IC. Sinking current means that the current is flowing into the pin.

Sourcing current means that the current is flowing out of the pin.

8.2 Absolute Maximum Ratings

Stresses above those listed in this clause may cause permanent device

failure. Exposure to absolute maximum ratings for extended periods

may effect device reliability.

Table 4: Absolute Maximum Ratings

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VCC Supply voltage on pin VCC -0.3 +6 V

VBAT Battery voltage on pin BAT -0.3 +40 V

Vdig DC voltage on pins EN, STB-B, ERR-B, TxD, RxD -0.3 VCC + 0.3 V

VCANH-L DC voltage on pins CANH, CANL -40 +40 V

Vtran-CAN Transient voltage on pins CANH and CANL (Figure 9) note 1 -350 +350 V

VWAKE DC input voltage on pin WAKE VBAT + 0.3 V

IWAKE DC input current on pin WAKE -15 mA

VINH DC output voltage on pin INH -0.3 VBAT + 0.3 V

VRTH-L DC voltage on pin RTH, RTL -40 40 V

RRTH Termination resistance on pin RTH 500 16000 W

RRTL Termination resistance on pin RTL 500 16000 W

Tjunc Maximum junction temperature -40 +150 °C

Vesd

Electrostatic discharge voltage (CANH and CANL pin) HBM; note 2

Electrostatic discharge voltage (other pins) HBM; note 2

Electrostatic discharge voltage; machine model; note 3

-8.0

-4.0

-500

+8.0

+4.0

+500

Notes:

1. The applied transients shall be in accordance with ISO 7637 part 1, test pulses 1, 2, 3a, and 3b.

2. Equivalent to discharging a 100pF capacitor through a 1.5kOhm resistor.

3. Equivalent to discharging a 200pF capacitor through a 10Ohm resistor and a 0.75mH coil.

8.3 Thermal Characteristics

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Rth (vj-a) Thermal resistance from junction to ambient in SSOP14 package (2 layer PCB) In free air 140 K/W

Rth (vj-s) Thermal resistance from junction to substrate of bare die In free air 30 K/W

Table 5: Thermal Characteristics

7.5 Protections

A current limiting circuit protects the transmitter output stages against

short circuit to positive and negative battery voltage. If the junction

temperature exceeds a maximum value, the transmitter output stages

are disabled. Because the transmitter is responsible for the major part

of the power dissipation, this will result in a reduced power dissipation

and hence a lower chip temperature. All other parts of the IC will

remain operating.

The pins CANH and CANL are protected against electrical transients

which may occur in an automotive environment.

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

8.4 Characteristics

VCC = 4.75V to 5.25V; VBAT = 5V to 50V; Tjunc = -40°C to 150°C; unless

otherwise specified.

Table 6: Characteristics

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ICC Supply current Normal operating mode; VTXD = VCC (recessive)

Normal operating mode; VTXD = 0V (dominant); no load

3.7

6.3

LAG_Vcc Forced low power mode VCC rising

VCC talling 2.45 4.5 V

IBAT Battery current on pin BAT

In all modes of operation; 500Ohm between RTL - CANL;

500Ohm between RTH - CANH;

VBAT = WAKE = INH = 12V;

VBAT = WAKE = INH = 5 to 50V

125

ICC + IBAT Supply current plus battery current Low power modes; Vcc = 5V; VBAT = VWAKE = VINH = 12V 30 60 mA

FLAG_VBAT POR-level for pin Vbat For setting power-on flag

For not setting power-on flag 3.5

2.1

2.4 1V

PPiinnss SSTTBB,, EENN aanndd TTXXDD

VIH High-level input voltage 0.7 x Vcc 6.0 V

VIL Low-level input voltage -0.3 0.3 x Vcc V

I-PU-H High-level input current pin TXD TXD = 0.7 * Vcc -10 -200 mA

I-PU-L Low-level input current pin TXD TXD = 0.3 * Vcc -80 -800 mA

R-PD Pull-down resistor at pin EN and STB-B 1V 190 360 600 KW

T_Dis_TxD Dominant time-out for TxD Normal mode; VtxD = 0V 0.75 4ms

T_GoToSleep Minimum hold-time for Go-To-Sleep mode 550 ms

PPiinnss RRXXDD aanndd EERRRR--BB

VOH High-level output voltage Isource = -1mA VCC - 0.9 VCC V

VOL Low-level output voltage Isink = 1.6mA

Isink = 7.5mA

0.4

1.5

PPiinn WWAAKKEE

IIL Low-level input current VWAKE = 0V; VBAT = 27V -10 -1 mA

Vth (WAKE) Wake-up threshold voltage VSTB-B = 0V 2.5 3.2 3.9 V

T_Wake_Min Minimum time on pin wake (debounce time) VBAT = 12V; low power mode; for rising and falling edge 738 ms

PPiinn IINNHH

Delta_VH High-level voltage drop IINH = 0.18mA 0.8 V

I_leak Leakage current Sleep mode; VINH = 0V 1mA

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

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PPiinnss CCAANNHH aanndd CCAANNLL ((rreecceeiivveerr))CCoonnddiittiioonnssMMiinn..TTyypp..MMaaxx..UUnniitt

Vdiff Differential receiver threshold voltage

No failures and bus failures 1, 2, 3, and 6a; see Figure 4

VCC = 5V

VCC = 4.75V to 5.25V

-3.25

0.65 x Vcc

-3

0.6 x Vcc

-2.75

0.55 x Vcc

VseCANH Single-ended receiver threshold voltage on

pin CANH

Normal operating mode and failures 4, 6 and 7

VCC = 5V

VCC = 4.75V to 5.25V

1.6

0.32 x Vcc

1.775

0.355 x Vcc

1.95

0.39 x Vcc

VseCANL Single-ended receiver threshold voltage on

pin CANL

Normal operating mode and failures 3 and 3a

VCC = 5V

VCC = 4.75V to 5.25V

0.61 x Vcc

3.2

0.645 x Vcc

3.4

0.68 x Vcc

Vdet(CANL) Detection threshold voltage for short circuit

to battery voltage on pin CANL Normal operating mode 6.5 7.3 8 V

Vth(wake)

Wake-up threshold voltage

On pin CANL

On pin CANH

Low power modes

2.5

1.1

3.2

1.8

3.9

2.25

DVth(wake) Difference of wake-up threshold voltages Low power modes 0.8 1.4 V

Pins CANH and CANL (transmitter)

VO(reces)

Recessive output voltage

On pin CANH

On pin CANL

VTXD = VCC

RRTH < 4kW

RRTL < 4kWVcc - 0.2 0.2 V

VO(dom)

Dominant output voltage

On pin CANH

On pin CANL

VTXD = 0V; VEN = VCC

ICANH = -40mA

ICANL = 40mA

Vcc - 1.4 1.4

IO(CANH) Output current on pin CANH

Normal operating mode;

VCANH = 0V; VTXD = 0V

Low power modes:

VCANH = 0V; VCC = 5V

-100

-1

-80

-45

IO(CANL) Output current on pin CANL

Normal operating mode;

VCANL = 14V; VTXD = 0V

Low power modes;

VCANL = 12V; VBAT = 12V

-1

110

Pins RTH and RTL

Rsw(RTL) Switch-on resistance between pin RTL and

VCC Normal operating mode; I(RTL) > -10mA 100 W

Rsw(RTH) Switch-on resistance between pin RTH and

ground Normal operating mode; I(RTH) > 10mA 100 W

VO(RTH) Output voltage on pin RTH Low power modes; IO = 1mA 1.0 V

IO(RTL) Output current on pin RTL Low power modes; VRTL = 0V -1.25 -0.3 mA

Ipu(RTL) Pull-up current on pin RTL Normal operating mode and failures 4, 5 and 7;

VRTL = 0V -75 mA

Ipd(RTH) Pull-down durrent on pin RTH Normal operating mode and failures 3 and 3a -75 mA

Thermal shutdown

Tj Junction temperature For shutdown 150 180 °C

Table 6: Characteristics Continued

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

8.5 Timing Characteristics

VCC = 4.75V to 5.25V; VBAT = 5V to 27V; VSTB = VCC; Tjunc = -40°C to 150°C;

unless otherwise specified.

Table 7: Timing Characteristics

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tt(r-d) CANL and CANH output transition

time for recessive-to-dominant

10% to 90%;

C1 = 10nF; C2 = 0; R1 = 100W; see Figure 6 0.35 0.6 1.4 ms

tt(d-r) CANL and CANH output transition

time for dominant-to-recessive

10% to 90%;

C1 = 1nF; C2 = 0; R1 = 100W; see Figure 5 0.2 0.3 0.7 ms

tPD(L) Propagation delay TXD to RXD

(LOW)

No failures and failures 1, 2, 4, and 6a; see Figure 6, 7

C1 = 1nF; C2 = 0; R1 = 100W

C1 = C2 - 3.3nF; R1 = 100W

Failures 3, 3a, 5, 6, and 7; see Figure 6, 7

C1 = 1nF; C2 = 0; R1 = 100W

C1 = C2 - 3.3nF; R1 = 100W

0.75

1.00

0.85

1.1

1.5

1.75

1.85

1.7

tPD(H) Propagation delay TXD to RXD

(HIGH)

No failures and failures 1, 2, 4, and 6a; see Figure 6, 7

C1 = 1nF; C2 = 0; R1 = 100W

C1 = C2 - 3.3nF; R1 = 100W

Failures 3, 3a, 5, 6, and 7; see Figure 6, 7

C1 = 1nF; C2 = 0; R1 = 100W

C1 = C2 - 3.3nF; R1 = 100W

1.2

2.5

1.1

1.5

1.9

3.3

1.7

2.2

tCANH(min) Minimum dominant time for

wake-up on pin CANH Low power modes; VBAT = 12V 7 38 ms

tCANL(min) Minimum dominant time for

wake-up on pin CANL Low power modes; VBAT = 12V 738 ms

tdet Failure detection time

Normal mode

Failure 3 and 3a

Failure 4, 6 and7

Low power modes; VBAT = 12V

Failure 3 and 3a

Failure 5 and 7

1.6

0.3

1.6

0.3

8.0

1.6

8.0

1.6

trec Failure recovery time

Normal mode

Failure 3 and 3a

Failure 4 and 7

Failure 6

Low power modes; VBAT = 12V

Failures 3, 3a, 5, and 7

0.3

125

0.3

1.6

750

1.6

Dpc Pulse-count difference between

CANH and CANL

Normal mode and failures 1, 2, 3, and 6a

Failure detection (pin ERR becomes LOW)

Failure recovery

AMIS-4168x

RTL

RTH

CANH

CANL

GND

BATTERY

WAKEVBAT

ERR

STB

RxD

TxD

VCC INH

+5V

20 pF

Common

Mode

voltage

10 KW

PC20041029.4

Figure 7: Test Circuit for Dynamic Characteristics

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

VTXD

VCANL

VCANH

VDIFF

RXD

VCC

0 V

0.3VCC 0.7VCC

TPD(L) TPD(H)

VDIFF= VCANH-

VCANL

0 V

5 V

-3.2 V

-5 V

2.2 V

1.4 V

3.6 V

Recessive Dominant Recessive

CANL

CANH

-m

M-

-p

M-

-s

M-

-p

AMIS-4168x

RTL

RTH

CANH

CANL

GND

BATTERY

WAKE

VBAT

ERR

STB

RxD

TxD

VCC INH

+5V

20 pF 1 nF

1 nF

125 W

511 W511 W

PC20041029.5

Transient

Generator

Figure 8: Timing Diagram for AC Characteristics (See Measurement Setup Figure 7)

Figure 9: Timing Diagram for Common-Mode Voltage (See Measurement Setup Figure 7)

Figure 10: Test Circuit for Schaffner Tests

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

9.0 Package Outline

SSyymmbboollCCoommmmoonn DDiimmeennssiioonnssNNoottee

MMiinn..NNoomm..MMaaxx..

A.061 .064 .068

A1.004 .006 0.010

A2.055 .058 .061

B.0138 .016 .020

C .0075 .008 .0098

DSee Variations 1

E .150 .155 .157

e.050 BSC

H .230 .236 .244

h.010 .013 .016

L .016 .025 .035

NSee Variations 2

a°0° 5° 8°

VVaarriiaattiioonnss

1122

DDNN

Note Min. Nom. Max.

AA .189 .194 .196 8

AB .337 .342 .344 14

AC .386 .391 .393 6

Notes:

1. Maximum die thickness allowable is .015

2. Dimensioning and tolerances per ANSI.Y14.5M - 1982.

3. “L” is the length of terminal for soldering to a substrate

4. “N” is the number of terminal positions

5. Formed leads shall be planar with respect to one

another within .003 inches at seating plane

6. Country of origin location and ejector pin on package

bottom is optional and depend on assemble location

7. Controlling dimension: inches

Figure 11: SOIC-14 - Plastic Small Outline; 14 Leads; Body Width 150 mil; JEDEC: MS-012

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

10.1 Introduction

Introduction to soldering surface mount packages. This text gives a very

brief insight to a complex technology. A more in-depth account of

soldering ICs can be found in our "Data Handbook IC26; Integrated

Circuit Packages" (document order number 9398 652 90011).

There is no soldering method that is ideal for all surface mount IC

packages. Wave soldering is not always suitable for surface mount ICs,

or for printed-circuit boards with high population densities. In these

situations reflow soldering is often used.

10.2 Reflow soldering

Reflow soldering requires solder paste (a suspension of fine solder

particles, flux and binding agent) to be applied to the printed-circuit

board by screen printing, stencilling or pressure-syringe dispensing

before package placement.

Several methods exist for reflowing; for example, infrared/convection

heating in a conveyor type oven. Throughput times (preheating,

soldering and cooling) vary between 100 and 200 seconds depending

on heating method.

Typical reflow peak temperatures range from 215 to 250°C. The top-

surface temperature of the packages should preferably be kept below

230 °C.

10.3 Wave Soldering

Conventional single wave soldering is not recommended for surface

mount devices (SMDs) or printed-circuit boards with a high component

density, as solder bridging and non-wetting can present major

problems.

To overcome these problems the double-wave soldering method was

specifically developed.

If wave soldering is used the following conditions must be

observed for optimal results:

• Use a double-wave soldering method comprising a turbulent wave

with high upward pressure followed by a smooth laminar wave.

• For packages with leads on two sides and a pitch (e):

° larger than or equal to 1.27mm, the footprint longitudinal axis is

preferred to be parallel to the transport direction of the printed-

circuit board;

° smaller than 1.27mm, the footprint longitudinal axis must be

parallel to the transport direction of the printed-circuit board. The

footprint must incorporate solder thieves at the downstream end.

• For packages with leads on four sides, the footprint must be placed

at a 45º angle to the transport direction of the printed-circuit board.

The footprint must incorporate solder thieves downstream and at the

side corners.

During placement and before soldering, the package must be fixed with

a droplet of adhesive. The adhesive can be applied by screen printing,

pin transfer or syringe dispensing. The package can be soldered after

the adhesive is cured.

Typical dwell time is four seconds at 250°C. A mildly-activated flux will

eliminate the need for removal of corrosive residues in most

applications.

10.4 Manual Soldering

Fix the component by first soldering two diagonally-opposite end leads.

Use a low voltage (24V or less) soldering iron applied to the flat part of

the lead. Contact time must be limited to 10 seconds at up to 300°C.

When using a dedicated tool, all other leads can be soldered in one

operation within two to five seconds between 270 and 320°C.

10.0 Soldering

AMI Semiconductor

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AAMMIISS--44116688xxFault Tolerant CAN Transceiver Data Sheet

AMI Semiconductor makes no warranty for the use of its products, other than those expressly contained in the company’s standard warranty contained in AMI Semiconductor’s Terms and Conditions. The company

assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to

update the information contained herein. No licenses to patents or other intellectual property of AMI Semiconductor are granted by the company in connection with the sale of AMI Semiconductor products, expressly or

by implication. I2C is a licensed trademark of Philips Electronics, N.V. AMI Semiconductor reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.

Table 8: Soldering

PPaacckkaaggeeSSoollddeerriinngg MMeetthhoodd

WWaavveeRReeffllooww((11))

BGA, SQFP Not suitable Suitable

HLQFP,HSQFP, HSOP,

HTSSOP, SMS Not suitable (2) Suitable

PLCC (3), SO, SOJ Suitable Suitable

LQFP, QFP, TQFP Not recommended (3)(4) Suitable

SSOP, TSSOP, VSO Not recommended (5) Suitable

Notes:

1. All surface mount (SMD) packages are moisture sensitive. Depending upon

the moisture content, the maximum temperature (with respect to time) and

body size of the package, there is a risk that internal or external package

cracks may occur due to vaporization of the moisture in them (the so called

popcorn effect). For details, refer to the Drypack information in the “Data

Handbook IC26; Integrated Circuit Packages; Section: Packing Methods.”

2. These packages are not suitable for wave soldering as a solder joint between

the printed circuit board and heatsink (at bottom version) can not be

achieved, and as solder may stick to the heatsink (on top version).

3. If wave soldering is considered, then the package must be placed at a 45°

angle to the solder wave direction. The package footprint must incorporate

solder thieves downstream and at the side corners.

4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch

(e) equal to or larger than 0.8mm; it is definitely not suitable for packages

with a pitch (e) equal to or smaller than 0.65mm.

5. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e)

equal to or larger than 0.65mm; it is definitely not suitable for packages with

a pitch (e) equal to or smaller than 0.5mm.