DataSheet.jp

TJA1051 の電気的特性と機能

TJA1051のメーカーはNXP Semiconductorsです、この部品の機能は「High-speed CANtransceiver」です。


製品の詳細 ( Datasheet PDF )

部品番号
TJA1051
部品説明
High-speed CANtransceiver
メーカ
NXP Semiconductors
ロゴ

NXP Semiconductors ロゴ 




このページの下部にプレビューとTJA1051ダウンロード(pdfファイル)リンクがあります。


Total 22 pages
scroll

No Preview Available !

TJA1051 Datasheet, TJA1051 PDF,ピン配置, 機能
TJA1051
High-speed CAN transceiver
Rev. 7 — 15 January 2015
Product data sheet
1. General description
The TJA1051 is a high-speed CAN transceiver that provides an interface between a
Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus.
The transceiver is designed for high-speed CAN applications in the automotive industry,
providing differential transmit and receive capability to (a microcontroller with) a CAN
protocol controller.
The TJA1051 belongs to the third generation of high-speed CAN transceivers from NXP
Semiconductors, offering significant improvements over first- and second-generation
devices such as the TJA1050. It offers improved ElectroMagnetic Compatibility (EMC)
and ElectroStatic Discharge (ESD) performance, and also features:
Ideal passive behavior to the CAN bus when the supply voltage is off
TJA1051T/3 and TJA1051TK/3 can be interfaced directly to microcontrollers with
supply voltages from 3 V to 5 V
The TJA1051 implements the CAN physical layer as defined in the current ISO11898
standard (ISO11898-2:2003). Pending the release of the updated version of ISO11898-2
including CAN FD, additional timing parameters defining loop delay symmetry are
specified. This implementation enables reliable communication in the CAN FD fast phase
at data rates up to 2 Mbit/s.
These features make the TJA1051 an excellent choice for all types of HS-CAN networks,
in nodes that do not require a standby mode with wake-up capability via the bus.
2. Features and benefits
2.1 General
Fully ISO 11898-2:2003 compliant
Loop delay symmetry timing enables reliable communication at data rates up to
2 Mbit/s in the CAN FD fast phase
Suitable for 12 V and 24 V systems
Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
VIO input on TJA1051T/3 and TJA1051TK/3 allows for direct interfacing with 3 V to 5 V
microcontrollers (available in SO8 and very small HVSON8 packages respectively)
EN input on TJA1051T/E allows the microcontroller to switch the transceiver to a very
low-current Off mode
Available in SO8 package or leadless HVSON8 package (3.0 mm 3.0 mm) with
improved Automated Optical Inspection (AOI) capability

1 Page





TJA1051 pdf, ピン配列
NXP Semiconductors
TJA1051
High-speed CAN transceiver
4. Ordering information
Table 2. Ordering information
Type number
Package
Name
TJA1051T
SO8
TJA1051T/3[1]
SO8
TJA1051T/E[1]
SO8
TJA1051TK/3[1] HVSON8
Description
plastic small outline package; 8 leads; body width 3.9 mm
plastic small outline package; 8 leads; body width 3.9 mm
plastic small outline package; 8 leads; body width 3.9 mm
plastic thermal enhanced very thin small outline package; no leads;
8 terminals; body 3 3 0.85 mm
Version
SOT96-1
SOT96-1
SOT96-1
SOT782-1
[1] TJA1051T/3 and TJA1051TK/3 with VIO pin; TJA1051T/E with EN pin.
5. Block diagram
VIO(1)
5
VCC
3
VI/O(1)
TEMPERATURE
PROTECTION
1
TXD
TIME-OUT
SLOPE
CONTROL
AND
DRIVER
VCC TJA1051
7
CANH
6
CANL
S8
EN(2) 5
MODE
CONTROL
RXD 4
DRIVER
TJA1051
Product data sheet
2
GND
015aaa036
(1) In a transceiver without a VIO pin, the VIO input is internally connected to VCC.
(2) Only present in the TJA1051T/E.
Fig 1. Block diagram
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
3 of 22


3Pages


TJA1051 電子部品, 半導体
NXP Semiconductors
TJA1051
High-speed CAN transceiver
7.1.3 Off mode
A LOW level on pin EN of TJA1051T/E selects Off mode. In Off mode the entire
transceiver is disabled, allowing the microcontroller to save power when CAN
communication is not required. The bus pins are floating in Off mode, making the
transceiver invisible to the rest of the network.
7.2 Fail-safe features
7.2.1 TXD dominant time-out function
A ‘TXD dominant time-out’ timer is started when pin TXD is set LOW. If the LOW state on
pin TXD persists for longer than tto(dom)TXD, the transmitter is disabled, releasing the bus
lines to recessive state. This function prevents a hardware and/or software application
failure from driving the bus lines to a permanent dominant state (blocking all network
communications). The TXD dominant time-out timer is reset when pin TXD is set HIGH.
The TXD dominant time-out time also defines the minimum possible bit rate of 40 kbit/s.
7.2.2 Internal biasing of TXD, S and EN input pins
Pin TXD has an internal pull-up to VIO and pins S and EN (TJA1051T/E) have internal
pull-downs to GND. This ensures a safe, defined state in case one or more of these pins
is left floating.
7.2.3
Undervoltage detection on pins VCC and VIO
Should VCC or VIO drop below their respective undervoltage detection levels (Vuvd(VCC)
and Vuvd (VIO); see Table 7), the transceiver will switch off and disengage from the bus
(zero load) until VCC and VIO have recovered.
7.2.4 Overtemperature protection
The output drivers are protected against overtemperature conditions. If the virtual junction
temperature exceeds the shutdown junction temperature, Tj(sd), the output drivers will be
disabled until the virtual junction temperature falls below Tj(sd) and TXD becomes
recessive again. Including the TXD condition ensures that output driver oscillations due to
temperature drift are avoided.
7.3 VIO supply pin
There are three versions of the TJA1051 available, only differing in the function of a single
pin. Pin 5 is either an enable control input (EN), a VIO supply pin or is not connected.
Pin VIO on the TJA1051T/3 and TJA1051TK/3 should be connected to the microcontroller
supply voltage (see Figure 6). This will adjust the signal levels of pins TXD, RXD and S to
the I/O levels of the microcontroller. For versions of the TJA1051 without a VIO pin, the VIO
input is internally connected to VCC. This sets the signal levels of pins TXD, RXD and S to
levels compatible with 5 V microcontrollers.
TJA1051
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 15 January 2015
© NXP N.V. 2015. All rights reserved.
6 of 22

6 Page

合計 : 22 ページ
PDF ダウンロード

[ TJA1051 データシート.PDF ]

データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。

scroll


部品番号部品説明メーカ
TJA1050

High speed CAN transceiver

NXP Semiconductors
NXP Semiconductors
TJA1050T

High speed CAN transceiver

NXP Semiconductors
NXP Semiconductors
TJA1050U

High speed CAN transceiver

NXP Semiconductors
NXP Semiconductors
TJA1051

High-speed CANtransceiver

NXP Semiconductors
NXP Semiconductors

www.DataSheet.jp     

|     2020   |  メール    |

    最新        |     Sitemap