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PDF NCV7424 Data sheet ( Hoja de datos )
| Número de pieza | NCV7424 | |
| Descripción | Four Channel LIN Transceiver | |
| Fabricantes | ON Semiconducto | |
| Logotipo |  |
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NCV7424
Four Channel LIN
Transceiver
NCV7424 is a four channel physical layer device using the Local
Interconnect Network (LIN) protocol. It allows interfacing of four
independent LIN physical buses and the LIN protocol controllers. The
device is compliant to LIN 2.x Protocol Specification package and the
SAE J2602 standard.
The NCV7424 LIN device is a member of the in-vehicle networking
(IVN) transceiver family. The device is a monolithic solution
incorporating 4 times the NCV7321-1 transceiver.
Features
• TSSOP−16 Package. Pin-out Compatible with One Single LIN
NCV7321 Transceiver (Pin Numbers 4 to 7, and 10 to 13)
• Compliant with LIN2.x, Backwards Compatible to Version 1.3 and
J2602
• Transmission Rate 1 kbps to 20 kbps
• Indefinite Short-Circuit Protection on LIN towards Supply and
Ground
• Bus Pins Protected Against Transients in an Automotive
Environment
• Thermal Shutdown
• System ESD on LIN Pin Exceeding 10 kV, No Need for External
ESD Protections
• Load Dump Protection (45 V)
• Integrated Slope Control Resulting into Excellent EME Performance
also without any Capacitor on LIN Pin
• Excellent EMI Performance
• Remote Wake-up via LIN Bus on all Four Channels
• 3.3 V and 5 V Compatible Digital Inputs
Quality
• NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Require− ments; AEC−Q100
Qualified and PPAP Capable
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
www.onsemi.com
16
1
TSSOP−16
CASE 948F
TxD4
RxD3
TxD3
RxD1
EN
TxD2
TxD1
RxD2
PACKAGE PICTURE
NCV7424
1 16
TSSOP−16
89
RxD4
LIN4
GND
LIN3
VBB
LIN1
GND
LIN2
MARKING DIAGRAM
16
NV74
24−0
ALYWG
G
1
NV7424−0 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 11 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
May, 2015 − Rev. 2
1
Publication Order Number:
NCV7424/D
1 page  
NCV7424
Table 4. THERMAL CHARACTERISTICS
Symbol
Parameter
RqJA_1
RqJA_2
Thermal Resistance Junction−to−Air, JESD51-3 1S0P PCB
Thermal Resistance Junction−to−Air, JESD51-7 2S2P PCB
Conditions
Free air
Free air
Value
128
72
Unit
K/W
K/W
FUNCTIONAL DESCRIPTION
Overall Functional Description
LIN is a serial communication protocol that efficiently
supports the control of mechatronic nodes in distributed
automotive applications. The domain is class-A multiplex
buses with a single master node and a set of slave nodes.
The NCV7424 contains four independent LIN
transmitters, LIN receivers plus common battery
monitoring, power-on-reset (POR) circuits and thermal
shutdown (TSD). The used LIN transmitter is optimized for
the maximum specified transmission speed of 20 kbps with
excellent EMC performance due to reduced slew rate of the
LIN outputs.
The junction temperature is monitored via a thermal
shutdown circuit that switches the LIN transmitters off when
temperature exceeds the TSD trigger level.
The NCV7424 has four operating states (unpowered
mode, standby mode, normal mode and sleep mode) that are
determined by the supply voltage VBB, input signals EN and
activity on the LIN bus. The operating states and principal
transitions between them are depicted in Figure 3.
OPERATING STATES
Standby mode
− LIN transceivers: OFF
− LIN term: 30 kW
− RxD1, 2, 3, 4:
Low to indicate wake−up on
bus
EN = High
for t > tenable
Normal mode
− LIN transceivers: ON
− LIN term: 30 kW
− RxD1, 2, 3, 4:
Received LIN data
LIN1, 2, 3 or 4 wakeup
EN = Low for t > tdisable
EN = High for t > tenable
Unpowered
(VBB Below Reset Level)
− LIN transceivers: OFF
− LIN term: floating
− RxD1, 2, 3, 4: floating
VBB above reset level
Sleep Mode
− LIN transceivers: OFF
− LIN term: current source
− RxD1, 2, 3, 4: floating
Figure 3. State Diagram
Unpowered Mode
As long as VBB remains below its power-on-reset level,
the chip is kept in a safe unpowered state. LIN transmitters
are inactive, LINx pins are left floating. Pins RxDx remain
floating.
The unpowered state will be entered from any other state
when VBB falls below its power-on-reset level.
Standby Mode
Standby mode is a low-power mode, where the LIN
transceivers remain inactive. A 30 kW resistor in series with
a reverse-protection diode is internally connected between
individual LIN pins and pin VBB. Standby mode is entered
after a wake-up event is recognized while the chip was in the
sleep mode, the RxD1,2,3 or 4 pin is pulled low depending
on which of the respective pins LIN1,2,3 or 4 the valid LIN
wake-up occurred. While staying in standby mode, wake-up
signaling by RxDx pins on each LIN channel is fully
functional. This is also in case if wake event(s) started in
sleep mode but actual transition from sleep to standby was
caused by preceding wake-up event on other LIN channel.
Normal Mode
In normal mode, the full functionality of the LIN
transceivers is available. Data are sent to the LINx bus
according to the state of TxDx inputs and RxDx pins reflect
the logical symbol received on the LINx bus –
high-impedant for recessive and Low level for dominant.
www.onsemi.com
5
5 Page 
LINx
100%
0%
LINx
VBB
NCV7424
60%
40%
60%
40%
tfall trise
Figure 6. LINx Bus Transmitter Rising and Falling Times
60% VBB
40% VBB
RxDx trec_prop_down
50%
trec_prop_up
Figure 7. LINx Bus Receiver Timing
t
t
t
TxDx
tBIT tBIT
50%
LINx
VBB
ttx_prop_down
t
ttx_prop_up
Figure 8. LINx Transmitter Timing
60% VBB
40% VBB
t
ORDERING INFORMATION
Part Number
Description
Temperature Range
Package
Shipping†
NCV7424DB0R2G
Quad LIN
Transceiver
−40°C to +125°C
TSSOP−16
(Pb−Free)
2500 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
www.onsemi.com
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet NCV7424.PDF ] | |
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