L9615®

CAN BUS TRANSCEIVERL9615 MEETS ISO/DIS 11898 UP TO500KBAUDTRANSMITTER- GENERATION OF DIFFERENTIAL OUTPUTSIGNALS- SHORT CIRCUIT PROTECTED FROM -5VTO 36V, DETECTION & SHUTDOWN- SLOPE CONTROL TO REDUCE RFI AND EMI- TWO STATES ADJUSTABLE SLOPECONTROL (≤500KBAUD/≤125KBAUD)RECEIVER- DIFFERENZIAL INPUT WITH HIGH
INTERFERENCE SUPPRESSION- COMMON MODE INPUT VOLTAGE RANGE(VCOM) FROM -2V TO VS+3V
PACKAGE: SO 8SO8ORDERING NUMBER: L9615Dconditioning and processing in connection with aCAN controller. Data rates of up to 500KBAUD
are supported using either shielded or nonshielded pair of lines.

DESCRIPTION
The L9615 is a bidirectional transceiver for signal
BLOCK DIAGRAM

31TX0&

VStd1≥11&ASC
RX0RX1847+
VS-1615
M

VREF

C_L+
VCLmaxM

M

2RECEIVER

C_H

PROTECTION

GND

TRANSMITTER
D96AT245

September 2013

1/8

L9615
ABSOLUTE MAXIMUM RATINGS
SymbolValue

Unit

Supply Voltage

Parameter-0.3 to 7

V

VC_H, VC_L
IC_H, IC_LBus Voltage at C_H, C_L (VS 0 to 5.5V)-5 to 36

V

Off State Leakage Current at C_H, C_L ( VS =0 to 5.5V,
VC_H = -5 to 36V, VC_L = -5 to 36 )-3 to 5mA

VDC

DC Voltage at TXO, ASC (VS 0 to 5.5V)

GND -0.3 to VS +0.3

V

IRXO
Tstg, TJ

Output Current at RXO (VS 0 to 5.5V)
Storage and Junction Temperature Range-0.3 to 1-40 to 150

mA°C

Operating Temperature Range-40 to 110°C

Value

Unit

VSTop

All voltages, except bus voltage, are defined with respect to pin 2
Positive currents flow into the IC.

PIN CONNECTIONTX018ASC

GND

27C_H

VS

36C_L

RX045RX1D96AT246

THERMAL DATASymbolParameter

PIN FUNCTIONS
N.

2/8NameFunction

1TXO

Transmitter Input

23GND
VSGroundSupply Voltage

45RXO
RX1Receive Output
Reference Voltage

6C_LLow Side Bus Output

78C_HASCHigh Side Bus Output
Adjustable Slope Control

L9615
ELECTRICAL CHARACTERISTICS (TOP = -40 to 110°C; VS = 4.5 to 5.5V; Dominat: VTXO = GND; Recessive: VTXO = VS; All voltages, except bus voltage, are defined with respect to pin 2. Positive currents
flow into the IC unless otherwise specified.)
SymbolParameter

VS

Supply Voltage

IS

Supply Current

Test Condition

Min.

Typ.

Max.

4.55Unit

5.5

VDominant

80mA

Recessive

20mA

TRANSMITTER SECTION (RA = 60Ω between C_H and C_L)
CTXO
VTXO

TXO Input CapacitanceTXO High Level Input Voltage

0V < VTXO < VS

TXO Low Level Input Voltage
ITXO
CASC
VASC

pF
VS00.3 VS

TXO High Level Input Current

VTXO = VS-202µA

TXO Low Level Input Current

VTXO = GND-275

0-25µAASC Input Capacitance

0V < VASC < VS

ASC Input Voltage for HighSpeed
ASC Input Voltage for Low Speed

IASC

250.7 VSASC Input Current

25pF

00.1 VS

0.9 VS

VS275µA-202µA

Recessive
VC_L = VC_H = -2 to 7V

0.4 VS-0.7

0.5 Vs

0.6 Vs
0.7

mA

VASC = VS
VASC = 0V

25

VC_H, VC_L
IC_H, IC_LBus Voltage Recessive
Leakage Current Recessive

VC_L = VC_H = 1 to 4V

-0.3

0.3mA

RIN(C_H, C_L)
RDiff(C_H, C_L)

Input Resistence

Recessive

550KΩ

Differential Input Resistence

Recessive

10100KΩ

VDiff =
VC_H - V C_L)
VDiff =
VC_H - V C_L)

Differential Output Voltage

Dominant, RA

1.53V

Differential Output Voltage

Recessive-500050mVtd

Short Circuit Detection TimeC_H to C_L ; C_H to B

RCS < 1Ω

1510µsIA

Supply Current in Case of Short
Circuit, C_H to C_L, C_H to B
(time = td)

VC_Lmax

150

Overvoltage Protection
Threshold on C_L

78mA

10VVsV

0.5V900mV

7V

RECEIVE SECTION
VRXO

VS =
VC_H -VC_L
VCOM = (VC_H+VC_L)/2VHYS

RXO High Level Output Voltage

VDiff < 0.5V; IRXO = 0.3mA;
VC_H = -2 to 7V; VC_L = -2 to 7V;

RXO Low Level Output Voltage

VDiff > 0.9V; IRXO = 1mA;
VC_H = -2 to 7V; VC_L = -2 to 7V;

Input Signal Threshold

VC_H = -2 to 7V; VC_L = -2 to 7V;

Input Common Mode Voltage
Range

0.9 VS

500700-2

Differential Input Hysteresis

150mV

0.45 VS 0.5 VS 0.55 VS
29VKΩ

REFERENCE OUTPUT
VRX1
RRX1Reference VoltageOutput Resistance

IRX1 = 0

3/8L9615
DINAMIC CHARACTERISTICS (CA = 47pF between C_H and C_L; VS = 5V; tR < 5ns;
CRXO = 20pF between RXO and B; RA = 60Ω between C_H and C_L)
SymbolParametertOT

Signal Delay TXO to C_H, C_L

Test Condition

SRDifferential Output Slew Rate(Transmitter)

VASC = 0V
VASC = VS

tOR
tOTR

Signal Delay C_H, C_L to RXO
Signal Delay TXO to RXO

Min.

Typ.

Max.

ns

50
20V/µs
V/µs

VASC = 0V

150

ns

VASC = 0V

300

ns205modes of operation: High speed (≤500kBaud) andlow speed (≤125kBaud).
The ASC pin is tied to GND for normal operationat ≤500kBaud. For slower speed operation at≤125kBaud the rise and fall slope of the bus output can be decreased to reduce EMI by connectingg the ASC pin to VS.

FUNCTIONAL DESCRIPTION
The L9615 is used as an interface between a
CAN controller and the physical bus. The device
provides transmitting capability to the CAN controller.
The transmitter outputs C_H and C_L are protected against short circuits and electrical transients which may occur in an automotive environment. In case of short circuit (C_H to C_L, C_H toB) the protection circuit recognizes this fault conditionand the transmitter output stages are disabled with a delay of max. 10µs to prevent destruction of the IC and high consumption ofsupply current IS. If VC_L >VC_Lmax the transmitter
output stages would be disabled immediately.
Pin ASC makes it possible to select two different

FUNCTIONAL TABLE
TXO

C_H

C_LBus StateRXOLHL

Dominant

L

H or
Floating

Floating
VS/2

Floating
VS/2

RecessiveH

TYPICAL APPLICATION

VCOM

RAVSn

VSm
SYSTEM n

SYSTEM m

CAN BUSCONTROLLER

L9615

L9615

CONTROLLER

VGNDn

VGNDm
C_H

VGNDDRA

VDiff

VGNDm

D96AT247A

C_L

4/8Unit50

L9615
TIMING DIAGRAMtRtR

VTX0tOT
tOT

0.9V

VDiff
0.5V

VRX0tORtOR

D96AT248

tOTR

tOTR

EMC PERFORMANCE (RECEIVER)

EQUIVALENT TERMINATINGRESISTOR 2 x 120Ω
PARALLEL AT LINE ENDS
6.8∝F
30Ω
CAN
CONTROLLER
1250Kbit/sec

CAN
TRANSCELVER
150Ω

450Ω
30Ω

Ust (Noise signal)
MONITORING(BIT COMPARISON)

100Ω40dB
HP8640CAN
CONTROLLER
2250Kbit/sec

CAN
TRANSCELVER
26.8∝F

90%AM, 1KHz

UST(V)NOT NOISE RESISTANT

30VSS

L9615

NOISE RESISTANT
20VSS
min. request boundary(automotive industry)

10VSS

1MHz

10MHz

100MHz500MHz1GHz

D96AT249B

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L9615
EMC PERFORMANCE (TRANSMITTER)
4.7nF

50Ω

VS+5V
80dBµFequivalent terminating resistor
2 x 120Ω parallel at line ends

TX0

GND

C_H

30Ω

C_L

30Ω

4.7nF

50Ω

µV

TEK495
Analyzer

D96AT250

Transceiver Without Emc Reducing Measures
D96AT251

80

Transceiver With Emc Reducing Measures
D96AT252

1000080

3162

70

1000

6050

316.2

50

316.2

40100

4010030

31.62

30

31.62

20102010103.162

103.16270

ATTENUATION OF
TRANSMITTER

60004080120160

1f(KHz)3162

ATTENUATION OF
TRANSMITTER

1000

004080

120

10000

160

1f(KHz)EMC PERFORMANCE (Transceiver Sending)equivalent terminating resistor
2 x 120Ω parallel at line ends

TX050Ω+5V

VS

5V
250KHz

GND

C_H

30Ω

C_L

30Ω

4.7nF

50Ω

µV

TEK495
Analyzer

D96AT253

Transceiver Without Emc Reducing Measures
D96AT254

80

D96AT255

10000

80703162703162

60

100060

1000

50

316.2

50

316.2

40100

4010030

31.62

30

31.62

2010201010

3.162

103.162006/8

Transceiver With Emc Reducing Measures

4080

1201601f(KHz)0040

8012016010000

1f(KHz)L9615

mm

DIM.
MIN.

TYP.

A
a1

inch
MAX.

MIN.

TYP.

1.75
0.1

0.25

a2

MAX.
0.069

0.004

0.010

1.65

0.065

a3

0.65

0.85

0.026

0.033

b0.35

0.48

0.014

0.019

b1

0.19

0.25

0.007

0.010

C

0.25

0.5

0.010

0.020

c1

OUTLINE AND
MECHANICAL DATA

45° (typ.)

D (1)

4.8

5.0

0.189

0.197

E

5.8

6.2

0.228

0.244

e1.27

0.050

e3

3.81

0.150

F (1)

3.8

4.0

0.15

0.157

L

0.4

1.27

0.016

0.050

M

0.6S8 ° (max.)

0.024

SO8(1) D and F do not include mold flash or protrusions. Mold flash orpotrusions shall not exceed 0.15mm (.006inch).

7/8

L9615

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