数据搜索系统,热门电子元器件搜索 |
|
TPIC2801 数据表(PDF) 4 Page - Texas Instruments |
|
TPIC2801 数据表(HTML) 4 Page - Texas Instruments |
4 / 13 page TPIC2801 OCTAL INTELLIGENT POWER SWITCH WITH SERIAL INPUT SLIS008 − D3282, AUGUST 1989 − REVISED JUNE 1990 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 2−4 Terminal Functions PIN I/O DESCRIPTION NAME NO. I/O DESCRIPTION GND 8 Ground. Common return for entire chip. The current from this terminal is potentially as high as 4 A if all outputs are on. GND is used for both logic and power circuits. RST 11 I Reset. An asynchronous reset is provided for the shift register and the parallel latches. This terminal is active when low and has no internal pullup. When active, it causes the power outputs to turn off. A power-on clear can be implemented using an RC network to VCC. SCLK 6 I Serial clock. This terminal clocks the shift register. The serial output (SO) changes state on the rising edge of SCLK and serial input (SI) data is accepted on the falling edge. SI 7 I Serial input. This terminal is the serial data input. A high on this terminal programs a particular output off, and a low turns it on. SIOE 5 I Serial input-output enable. Data is transferred from the shift registers to the power outputs on the rising edge of this signal. The falling edge of this signal parallel loads the output voltage sense bits from the power output stages into the shift register. The output driver for SO is enabled when this terminal is low, provided RST is high. SO 9 O Serial output. This terminal is the serial 3-state output from the shift register and is in a high-impedance state when SIOE is high or RST is low. A high for a data bit on this terminal indicates that the corresponding power output (Yn) is high. This means that the output was programmed to be off the last time a byte was input to the device or that the output faulted and was latched off by the output voltage-sense indicator. A low on this output indicates that the corresponding power output (Yn) is low (on output stage or open-circuit condition). VCC 10 5-V supply voltage Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 4 3 2 1 15 14 13 12 O Power outputs. These outputs are provided with current limiting and voltage sense for fault indication and protection. The nominal load current for these outputs is 500 mA, and the current limiting is set to a minimum of 1.2 A. The active-low outputs also have voltage clamps set at about 35 V for recirculation of inductive load current. Internal 90-k Ω pulldown resistors are provided at each output. These resistors hold the output low during an open-circuit condition. schematic of inputs and outputs EQUIVALENT OF ALL LOGIC INPUTS (SI, SCLK, SIOE, RST) VCC Input GND VCC Output EQUIVALENT OF SERIAL OUTPUT (SO) EQUIVALENT OF Y OUTPUTS (Yn) VCC Output 90 k Ω 34 V 0.025 Ω VBE ≈ 30 mV All resistor and voltage values shown are nominal. |
类似零件编号 - TPIC2801 |
|
类似说明 - TPIC2801 |
|
|
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 |