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U6812BのメーカーはATMEL Corporationです、この部品の機能は「Single-ended Bus Transceiver with Triple Buffer」です。 |
部品番号 | U6812B |
| |
部品説明 | Single-ended Bus Transceiver with Triple Buffer | ||
メーカ | ATMEL Corporation | ||
ロゴ | |||
このページの下部にプレビューとU6812Bダウンロード(pdfファイル)リンクがあります。 Total 10 pages
Features
• Wide Power Supply Voltage Range
• Short-circuit Protected K-interface, ISO9141 Compatible
• Three Short-circuit Protected 40-mA Open-collector Buffers
• All Low-power Outputs with Built-in 28-V Clamping
• CMOS Compatible Digital Inputs with Hysteresis
• Digital 1-mA Push-pull "RxD" K-line Output
• Channel-specific Over-temperature Switch Off in Event of Short Circuit
• Load-dump Protection and Interference Protection
According to ISO 7637-1/4 (DIN 40839)
Description
The U6812B is a bipolar monolithic K-line bus transceiver designed to provide
bi-directional serial communication in automotive diagnostic applications. The stan-
dard K-line is ISO 9141 compatible for baud rates up to 250 kBaud.
The IC provides three universally applicable 40-mA open-collector buffers, that can be
used for signal decoupling. The U6812B is manufactured using Atmel’s bipolar pro-
cess and fully complies to automotive industry specifications.The U6812B provides an
ideal grouping of SO-packaged low-power drivers, thus meeting customers’ demand
for space-saving and cost-effective circuit board assembly.
Single-ended
Bus Transceiver
with Triple
Buffer
U6812B
Figure 1. Block Diagram
VS
VCC
TXD
TXD
VS
K-diagnosis ISO 9141
VCC
VS/2
VCC/2
IN 1
VCC/2
IN 2
DIS
IN 3
VCC Temperature
control
K
GND
OUT 1
GND
OUT 2
GND
OUT 3
GND
Rev. 4760A–AUTO–10/03
1 Page Figure 3. Basic Application Circuit
VBatt
D1
+
C1
10 µ
R1
1k
TXD
IN 1
C2
VS
16 15 14 13 12 11 10
9
U6812B
K
RXD
OUT 1
IN 2
DIS
VCC
IN 3
12345 67 8
OUT 3
OUT 2
U6812B
4760A–AUTO–10/03
3
3Pages Timing Diagrams
Figure 4. IN2/IN3 - Pulse Diagram
VS
IN2/IN3
DIS
OUT2/OUT3
Short
Temperature
Figure 5. IN1 - Pulse Diagram
VS
IN1
OUT1
Short
Temperature
Figure 6. K-interface Pulse Diagram
VS
TxD
K
RxD
Short
Temperature
6 U6812B
150°C
140°C
150°C 140°C
150°C
140°C
4760A–AUTO–10/03
6 Page | |||
ページ | 合計 : 10 ページ | ||
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PDF ダウンロード | [ U6812B 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。 |
部品番号 | 部品説明 | メーカ |
U6812B | Single-ended Bus Transceiver with Triple Buffer | ATMEL Corporation |