power local interconnect network (LIN) transceivers are
ideal for use in automotive network applications where
high reliability is required. The devices provide the
interface between the LIN master/slave protocol con-
troller, and the physical bus described in the LIN 2.0
specification package and SAE J2602 specification.
The devices are intended for in-vehicle subnetworks
with a single master and multiple slaves.
The extended fault-protected voltage range of ±60V on
the LIN bus line allows for use in +12V, +24V, and
+42V automotive applications. The devices allow com-
munication up to 20kbaud, and include slew-rate limit-
ed transmitters for enhanced electromagnetic
emissions (EME) performance. The devices feature a
low-power 4µA sleep mode and provide wake-up
source detection.
The MAX13020 is a pin-to-pin replacement and is func-
tionally compatible with the Philips TJA1020. The
MAX13021 includes enhanced bus dominant clamping
fault management for reduced quiescent current during
LIN bus shorts to GND. The MAX13020/MAX13021 are
available in the 8-pin SO package, and operate over
the -40°C to +125°C automotive temperature range.
Features
o
MAX13020 is a Pin-to-Pin Upgrade for TJA1020
o
ESD Protection
±12kV Human Body Model (LIN)
±4kV Contact Discharge (LIN, NWAKE, BAT)
o
LIN 2.0/SAE J2602 Compatible
o
Slew-Rate Limited Transmitter for Low
Electromagnetic Emissions (EME)
o
Robust Electromagnetic Immunity (EMI)
o
Passive Behavior in Unpowered State
o
TXD Dominant Timeout Function
o
LIN Bus Dominant Management (MAX13021 Only)
o
Input Levels Compatible with +3.3V and +5V
Controllers
o
Integrated 30kΩ Termination Resistor for Slave
Applications
o
Low 4µA Sleep Mode with Local and Remote
Wake-Up Detection
o
Wake-Up Source Recognition
o
Thermal Shutdown
Ordering Information
PART
MAX13020ASA+
MAX13021ASA+
MAX13021ASA+/V+
LIN BUS DOMINANT
PIN-PACKAGE
MANAGEMENT
—
Yes
Yes
8 SO
8 SO
8 SO
Applications
+12V/+42V Automotive
+24V Heavy Truck and Bus
Note:
All devices are specified over the -40°C to +125°C auto-
motive temperature range.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Typical Operating Circuit
V
BAT
LIN
BUS
MAX5023
+5V LDO
EN
INH
*
BAT
NWAKE
MASTER NODE
ONLY
MAX13020
MAX13021
TXD
MICROCONTROLLER
RXD
NSLP
GND
LIN
1kΩ
*OPTIONAL TXD PULLUP RESISTOR FOR READING WAKE-UP SOURCE FLAG
Pin Configuration appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-0559; Rev 2; 10/12
MAX13020/MAX13021
±60V Fault-Protected LIN Transceivers
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND, unless otherwise noted.
Positive currents flow into the device.)
BAT.........................................................................-0.3V to +40V
TXD, RXD, NSLP.......................................................-0.3V to +7V
LIN ...........................................................0V to ±60V Continuous
LIN to BAT..........................................................-80V Continuous
NWAKE...................................................................-0.3V to +80V
NWAKE Current (NWAKE < -0.3V) ....................................-15mA
INH ..............................................................-0.3V to V
BAT
+ 0.3V
INH Current .......................................................-50mA to +15mA
Continuous Power Dissipation
8-Pin SO (derate 5.9mW/°C above +70°C)...................471mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow) ......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
BAT
= +5V to +38V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
BAT
= +12V and T
A
= +25°C. Positive
currents flow into the device.)
PARAMETER
BAT Supply Voltage
SYMBOL
V
BAT
CONDITIONS
Operating range
Sleep mode,
V
NWAKE
= V
BAT,
V
TXD
= V
NSLP
= V
GND
V
BAT
= +27V,
V
LIN
= V
BAT
V
BAT
= +38V,
V
LIN
= V
BAT
MIN
5.0
1
4
TYP
MAX
38.0
8
8
UNITS
V
Standby mode, bus recessive,
V
BAT
= +5V to +27V,
V
LIN
= V
INH
= V
NWAKE
= V
BAT,
V
TXD
= V
NSLP
= V
GND
Standby mode, bus dominant,
V
BAT
= +12V, V
INH
= V
NWAKE
= V
BAT,
V
LIN
= V
TXD
= V
NSLP
= V
GND
Normal/low slope mode,
bus recessive, V
BAT
= +5V to +27V,
V
LIN
= V
INH
= V
NWAKE
= V
BAT,
V
TXD
= V
NSLP
= +5V
Normal/low slope mode,
bus dominant, no load,
V
BAT
= V
INH
= V
NWAKE
= +12V,
V
TXD
= V
GND
, V
NSLP
= +5V
Sleep mode, bus dominant,
V
BAT
= V
NWAKE
= +12V,
V
LIN
= V
TXD
= V
NSLP
= V
GND
Fault mode, bus dominant (MAX13021),
V
INH
= V
NWAKE
= V
BAT
,
V
LIN
= V
GND
, V
NSLP
= +5V
Disable mode, bus dominant (MAX13021),
V
BAT
= V
INH
= V
NWAKE
= +12V, V
LIN
= V
GND
100
650
1000
µA
300
1000
2000
BAT Supply Current
I
BAT
100
650
1000
1
4.5
8
mA
90
30
60
µA
20
30
2
Maxim Integrated
MAX13020/MAX13021
±60V Fault-Protected LIN Transceivers
ELECTRICAL CHARACTERISTICS (continued)
(V
BAT
= +5V to +38V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
BAT
= +12V and T
A
= +25°C. Positive
currents flow into the device.)
PARAMETER
TRANSMITTER DATA INPUT (TXD)
High-Level Input Voltage
Low-Level Input Voltage
Pulldown Resistance
Low-Level Input Current
Low-Level Output Current
RECEIVER DATA OUTPUT (RXD)
Low-Level Output Current
High-Level Leakage Current
NSLP INPUT
High-Level Input Voltage
Low-Level Input Voltage
Pulldown Resistance
Low-Level Input Current
NWAKE INPUT
High-Level Input Voltage
Low-Level Input Voltage
NWAKE Pullup Current
High-Level Leakage Current
INH OUTPUT
Switch On-Resistance Between
BAT and INH
High-Level Leakage Current
LIN BUS I/O
LIN Recessive Output Voltage
LIN Dominant Output Voltage
V
O(RECES)
V
O(DOM)
V
TXD
= +5V, I
LIN
= -1µA
Normal/low slope mode,
V
TXD
= V
GND
, V
BAT
= +7V to +27V,
R
TERM
= 500Ω to BAT
V
BAT
-1.0V
0.2 x V
BAT
V
V
R
SW
I
LH
Standby, normal/low slope modes, I
INH
=
-15mA, V
BAT
= +12V
Sleep mode,
V
NWAKE
= +38V, V
BAT
= +38V
-5
22
0
50
+5
Ω
µA
V
IH
V
IL
I
IL
I
LH
V
NWAKE
= V
GND
V
NWAKE
= +38V, V
BAT
= +38V
-30
-5
-10
0
V
BAT
- 1.0
V
BAT
- 3.3
-3
+5
V
V
µA
µA
V
IH
V
IL
R
NSLP
I
IL
V
NSLP
= +5V
V
NSLP
= V
GND
125
-5
330
0
2
0.8
800
+5
V
V
kΩ
µA
I
OL
I
LH
V
LIN
= V
GND
, V
RXD
= +0.4V
Normal/low slope mode,
V
LIN
= V
BAT
, V
RXD
= +5V
1.2
-5
4.1
0
+5
mA
µA
V
IH
V
IL
R
TXD
I
IL
I
OL
V
TXD
= V
GND
Standby mode, V
NWAKE
= V
GND
,
V
LIN
= V
BAT
, V
TXD
= +0.4V,
local wake-up request
Output recessive
Output dominant
125
-5
1.5
330
0
6
2
0.8
800
+5
V
V
kΩ
µA
mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Maxim Integrated
3
MAX13020/MAX13021
±60V Fault-Protected LIN Transceivers
ELECTRICAL CHARACTERISTICS (continued)
(V
BAT
= +5V to +38V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
BAT
= +12V and T
A
= +25°C. Positive
currents flow into the device.)
PARAMETER
High-Level Leakage Current
Device Leakage Current, V
BAT
Disconnected
Device Leakage Current, GND
Disconnected
LIN Current After Short Detection
Short-Circuit Recovery Threshold
Voltage
LIN Pullup Current
Slave Termination Resistance to
V
BAT
SYMBOL
I
LH
I
L(BAT)
I
L(GND)
I
IL(FAULT)
CONDITIONS
V
LIN
= V
BAT
, V
TXD
= +5V
V
BAT
= V
GND
, V
LIN
= +18V
V
BAT
= V
GND
, V
LIN
= -18V
Fault mode, disable mode (MAX13021)
V
LIN
= V
GND
MIN
-5
-5
-100
-10
V
BAT
-
2.5
-10
20
27
45
30
40
70
45
0.4 x V
BAT
0.6 x V
BAT
0.475 x
V
BAT
0.145 x
V
BAT
0.5 x
V
BAT
0.16 x
V
BAT
+165
10
LIN
LIN, NWAKE, BAT
(tested to IBEE test setup)
C
1
= 100nF on V
BAT
,
C
2
= 220pF on LIN,
R = 33kΩ on NWAKE
±12
0.525 x
V
BAT
0.175 x
V
BAT
V
V
V
V
°C
°C
kV
TYP
0
0
MAX
+5
+5
0
-2
V
BAT
-
0.9
-2
47
60
100
mA
UNITS
µA
µA
µA
µA
V
µA
kΩ
V
th(RECOVERY)
Fault mode, disable mode (MAX13021)
I
IL
R
SLAVE
Sleep mode, V
LIN
= V
GND
, V
NSLP
= V
GND
Standby, normal/low slope modes, V
LIN
=
V
GND
, V
BAT
= +12V
V
LIN
= V
BAT
= +12V,
V
TXD
= V
GND
, t < t
DOM
Short-Circuit Output Current
I
O(SC)
V
LIN
= +12V, V
BAT
= +27V,
V
TXD
= V
GND
, t < t
DOM
(Note 1)
V
BAT
= +12V, V
LIN
= +60V, V
TXD
= V
GND
,
t < t
DOM
Receiver Dominant State
Receiver Recessive State
Receiver-Threshold Center
Voltage
Receiver-Threshold Hysteresis
Voltage
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
ESD PROTECTION
Human Body Model
V
th(DOM)
V
th(REC)
V
th(CENTER)
V
th(HYS)
T
SHDN
V
BAT
= +7V to +38V
V
BAT
= +7V to +38V
V
BAT
= +7V to +38V
V
BAT
= +7V to +38V
Contact Discharge
IEC61000-4-2
±4
kV
4
Maxim Integrated
MAX13020/MAX13021
±60V Fault-Protected LIN Transceivers
TIMING CHARACTERISTICS
(V
BAT
= +5V to +38V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
语音作为自然的人机接口，可以使车载导航系统实现更安全、更人性化的操作。通过国内外车载导航系统的功能对比可知，支持语音交互是车载导航系统的一个发展趋势。另外，市场信息服务公司J.D Power and Associates的调研数据也表明，56％的消费者更倾向于选择声控的导航系统。因此，开发车载语音导航系统是很有意义的。目前，国内已经具备开发车载语音导航系统的技术基础，特别是文语转换TTS技术...[详细]
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