|
|||||||
|
|||||||
|
|
|
|||||||
|
|||||||
|
|
| 74AHC139DR资料 | |
|
74AHC139DR PDF Download |
|
File Size : 116 KB
Manufacturer:TI Description:The MK1491-06 provides more functionality in a 28 pin package by using a unique I/O technique. The device checks the status of all I/O pins during power-up and at exit from the Power Down state. This status (pulled high, low, or mid-level) then determines the frequency selections and power down modes (see the tables on pages 2 and 4). Within 10ms after power up, the inputs change to outputs and the clocks start up. In the diagrams to the right, the 33Ω resistors are the normal output termination resistors. The 10kΩ resistor pulls low to generate a logic zero. Weak internal pull-up resistors are present on SEL24, EPCI#, FS, LE#, PCISTP#, and SLOW#. These pins should be connected directly to VDD or GND if not under active control. Internal resistors on PEN, SEL AUDIO, and TS pull to a mid-level (M). |
|
| 相关型号 | |
| ◆ Z9036112PSC | |
| ◆ Z86C6116PSC | |
| ◆ Z84C3006PEC | |
| ◆ Z0861505PSC | |
| ◆ XTR110KP | |
| ◆ XTR106UA | |
| ◆ XTR105UA | |
| ◆ XTR101AP | |
| ◆ XN4601 | |
| ◆ XN4501 | |
| 1PCS | 100PCS | 1K | 10K | ||
| 价 格 | |||||
|
型 号：74AHC139DR 厂 家：TI 封 装：3.9mm 批 号：00+ 数 量：1079 说 明： |
|||||
|
运 费：广东省内10元(平邮),广东省外20元(快递) 所在地：深圳市 新旧程度： |
|||||
| 联系人：黄林锋 |
| 电 话：0755-82579969,83255343 |
| 手 机：13714599954, |
| QQ：172517499,137550090 |
| MSN：zfdz168@hotmail.com |
| 传 真：0755-82738881 |
| EMail：zfdz168@163.com |
| 公司地址： 深圳市福田区华强北路华强广场B座28楼L室 |
