PCA9848: 8-channel ultra-low voltage, Fm+ I2C-bus switch with reset
The PCA9848 is an ultra-low voltage, octal bidirectional translating switch controlled via the I²C-bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any or all SCx/SDx channels can be selected, determined by the programmable control register. This feature allows multiple devices with the same I²C-bus address to reside on the same bus. The switch device can also separate a heavily loaded I²C-bus into separate bus segments, eliminating the need for a bus buffer.
An active LOW reset input allows the PCA9848 to recover from a situation where one of the downstream I²C-buses is stuck in a LOW state. Pulling the RESET pin LOW resets the I²C-bus state machine and deselects all the channels, as does the internal Power-On Reset (POR) function.
The pass gates of the switches are constructed such that the VDD1 pin is used to limit the maximum high voltage which is passed by the PCA9848. This allows the use of different bus voltages on each channel, so that 0.8 V, 1.8 V, 2.5 V or 3.3 V parts can communicate without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 3.6 V tolerant.
Outline 3d SOT355-1
数据手册 (1)
| 名称/描述 | Modified Date |
|---|---|
| 8-channel ultra-low voltage, Fm+ I2C-bus switch with reset (REV 1.0) PDF (1.0 MB) PCA9848 [English] | 15 Dec 2014 |
应用说明 (1)
| 名称/描述 | Modified Date |
|---|---|
| PTN3460 power-up reset requirement (REV 1.0) PDF (433.0 kB) AN11489 [English] | 19 Dec 2014 |
手册 (1)
| 名称/描述 | Modified Date |
|---|---|
| NXP® octal I2C bus switch PCA9848 (REV 1.0) PDF (569.0 kB) 75017622 [English] | 29 Dec 2014 |
封装信息 (1)
| 名称/描述 | Modified Date |
|---|---|
| plastic thin shrink small outline package; 24 leads; body width 4.4 mm (REV 1.0) PDF (353.0 kB) SOT355-1 [English] | 08 Feb 2016 |
包装 (1)
| 名称/描述 | Modified Date |
|---|---|
| TSSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 4.1) PDF (227.0 kB) SOT355-1_118 [English] | 15 Apr 2013 |
支持信息 (1)
| 名称/描述 | Modified Date |
|---|---|
| Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English] | 08 Oct 2009 |
订购信息
| 型号 | 状态 |
|---|---|
| PCA9848PW | Active |
封装环保信息
| 产品编号 | 封装说明 | Outline Version | 回流/波峰焊接 | 包装 | 产品状态 | 部件编号订购码 (12NC) | Marking | 化学成分 | RoHS / 无铅 / RHF | 无铅转换日期 | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9848PW | | SOT355-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 in SmallPack | Development | PCA9848PWZ (9353 042 07138) | Standard Marking | PCA9848PW |    | Always Pb-free | 1 | 1 |
| Reel 13" Q1/T1 | Active | PCA9848PWJ (9353 042 07118) | Standard Marking | PCA9848PW | | Always Pb-free | 1 | 1 |
- PTN3460 power-up reset requirement pca9848bs
- NXP® octal I2C bus switch PCA9848 pca9848bs
- plastic thin shrink small outline package; 24 leads; body width 4.4 mm 74LVC4245A_Q100
- SSOP-TSSOP-VSO-WAVE LPC1114FDH28
- TSSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... 74LVC4245A_Q100
- SA639DH
