SN74ABTE16246
- Member of the Texas Instruments Widebus™ Family
- Supports the VME64 ETL Specification
- Reduced TTL-Compatible Input Threshold Range
- High-Drive Outputs (IOH = –60 mA, IOL = 90 mA) Support Equivalent 25-
Incident-Wave Switching - VCC BIAS Pin Minimizes Signal Distortion During Live Insertion
- Internal Pullup Resistor on OE\ Keeps Outputs in High-Impedance State During Power Up or Power Down
- Distributed VCC and GND Pins Minimize High-Speed Switching Noise
- Equivalent 25- Series Damping Resistor on B Port
- Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
Widebus is a trademark of Texas Instruments.
The SN74ABTE16246 is an 11-bit noninverting transceiver designed for asynchronous two-way communication between buses. This device has open-collector and 3-state outputs. The device allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so that the buses are effectively isolated. When OE\ is low, the device is active.
The B port has an equivalent 25- series output resistor to reduce ringing. Active bus-hold inputs on the B port hold unused or floating inputs at a valid logic level.
The A port provides for the precharging of the outputs via VCCBIAS, which establishes a voltage between 1.3 V and 1.7 V when VCC is not connected.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | SN74ABTE16246 データシート (Rev. J) | 2003/08/06 |
設計と開発
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| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| TSSOP (DGG) | 48 | Ultra Librarian |
| SSOP (DL) | 48 | Ultra Librarian |