数据搜索系统,热门电子元器件搜索 |
|
SN74ALVTHR16245GR 数据表(PDF) 2 Page - Texas Instruments |
|
|
SN74ALVTHR16245GR 数据表(HTML) 2 Page - Texas Instruments |
2 / 18 page SN54ALVTHR16245, SN74ALVTHR16245 2.5-V/3.3-V 16-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCES075D – JUNE 1996 – REVISED DECEMBER 2002 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description/ordering information (continued) These devices can be used as two 8-bit transceivers or one 16-bit transceiver. They allow 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. All outputs are designed to sink up to 12 mA, and include equivalent 30- Ω resistors to reduce overshoot and undershoot. These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. When VCC is between 0 and 1.2 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.2 V, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. terminal assignments 12 34 5 6 A 1DIR NC NC NC NC 1OE B 1B2 1B1 GND GND 1A1 1A2 C 1B4 1B3 VCC VCC 1A3 1A4 D 1B6 1B5 GND GND 1A5 1A6 E 1B8 1B7 1A7 1A8 F 2B1 2B2 2A2 2A1 G 2B3 2B4 GND GND 2A4 2A3 H 2B5 2B6 VCC VCC 2A6 2A5 J 2B7 2B8 GND GND 2A8 2A7 K 2DIR NC NC NC NC 2OE NC – No internal connection FUNCTION TABLE (each 8-bit section) INPUTS OPERATION OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation SN74ALVTHR16245 . . . GQL PACKAGE (TOP VIEW) J H G F E D C B A 2 13 4 6 5 K |
类似零件编号 - SN74ALVTHR16245GR |
|
类似说明 - SN74ALVTHR16245GR |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |