PCA9511A: Hot swappable I2C-bus and SMBus bus buffer
The PCA9511A is a hot swappable I²C-bus and SMBus buffer that allows I/O card insertion into a live backplane without corrupting the data and clock buses. Control circuitry prevents the backplane from being connected to the card until a stop command or bus idle occurs on the backplane without bus contention on the card. When the connection is made, the PCA9511A provides bidirectional buffering, keeping the backplane and card capacitances isolated.
The PCA9511A rise time accelerator circuitry allows the use of weaker DC pull-up currents while still meeting rise time requirements. The PCA9511A incorporates a digital ENABLE input pin, which enables the device when asserted HIGH and forces the device into a low current mode when asserted LOW, and an open-drain READY output pin, which indicates that the backplane and card sides are connected together (HIGH) or not (LOW).
During insertion, the PCA9511A SDA and SCL lines are precharged to 1 V to minimize the current required to charge the parasitic capacitance of the chip.
PCA9511A: Product Block Diagram
PCA9511A: Block Diagram
sot096-1_3d
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| Hot swappable I2C-bus and SMBus bus buffer (REV 4.0) PDF (149.0 kB) PCA9511A | 19 Aug 2009 |
Application Notes (2)
| Name/Description | Modified Date |
|---|---|
| Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 | 20 Jun 2007 |
| I2C / SMBus Repeaters, Hubs and Expanders (REV 2.0) PDF (1.0 MB) AN255 | 19 Dec 2002 |
Users Guides (4)
| Name/Description | Modified Date |
|---|---|
| I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM10204 | 28 Apr 2014 |
| I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA | 03 Apr 2013 |
| PCA9600 demonstration board OM6293 (REV 1.0) PDF (130.0 kB) UM10323 | 15 Dec 2008 |
| I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM10206 | 13 Jun 2006 |
Brochures (3)
| Name/Description | Modified Date |
|---|---|
| NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 75017540 | 01 Aug 2014 |
| I2C/SMBus buffers for backplane multi-point and hot-swap applications; NXP® Level-shifting and... (REV 1.0) PDF (773.0 kB) 75016530 | 01 Jul 2008 |
| Extend the I2C-bus with advanced repeaters and hubs; NXP® 2-channel I2C-bus repeaters PCA9515x and... (REV 1.0) PDF (740.0 kB) 75016532 | 01 Jul 2008 |
Package Information (2)
| Name/Description | Modified Date |
|---|---|
| plastic thin shrink small outline package; 8 leads; body width 3 mm (REV 1.0) PDF (240.0 kB) SOT505-1 | 08 Feb 2016 |
| plastic small outline package; 8 leads; body width 3.9 mm (REV 1.0) PDF (244.0 kB) SOT96-1 | 08 Feb 2016 |
Packing (2)
| Name/Description | Modified Date |
|---|---|
| SO8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 2.0) PDF (232.0 kB) SOT96-1_118 | 19 Apr 2013 |
| TSSOP8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (214.0 kB) SOT505-1_118 | 15 Apr 2013 |
Supporting Information (4)
| Name/Description | Modified Date |
|---|---|
| Reflow Soldering Profile (REV 1.0) PDF (34.0 kB) REFLOW_SOLDERING_PROFILE | 30 Sep 2013 |
| Wave Soldering Profile (REV 1.0) PDF (20.0 kB) WAVE_SOLDERING_PROFILE | 30 Sep 2013 |
| Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW | 08 Oct 2009 |
| Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE | 08 Oct 2009 |
IBIS Model
- PCA9511ADP IBIS model (REV 1.0) ibs PCA9511ADP 9/19/2012
Ordering Information
| Product | Status | Package version | Operating Temperature (Cel) | I2C-bus (kHz) | Operating voltage (VDC) | Inputs | Outputs |
|---|---|---|---|---|---|---|---|
| PCA9511AD | Active | SOT96-1 | -40~85 | 400 | 2.7~5.5 | 1 | 1 |
| PCA9511ADP | Active | SOT505-1 | -40~85 | 400 | 2.7~5.5 | 1 | 1 |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9511ADP |  | SOT505-1 | Reflow_Soldering_Profile | Reel 13" Q1/T1 | Active | PCA9511ADP,118 (9352 793 08118) | 9511A | PCA9511ADP |    | week 13, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 |
| PCA9511AD | | SOT96-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 | Active | PCA9511AD,118 (9352 793 07118) | PA9511A | PCA9511AD | | week 13, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | PCA9511AD,112 (9352 793 07112) | PA9511A | PCA9511AD | | week 13, 2005 | 0.0 | 2.0 | 5E8 | 1 | 1 |
- Level shifting techniques in I2C-bus design pca9685pw
- I2C / SMBus Repeaters, Hubs and Expanders pca9600
- I2C-bus specification and user manual pca9685pw
- I2C-bus specification and user manual pca9685pw
- PCA9600 demonstration board OM6293 pca9600
- I2C Demonstration Board 2005-1 Quick Start Guide pca9685pw
- NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns pca9685pw
- I2C/SMBus buffers for backplane multi-point and hot-swap applications; NXP® Level-shifting and... pca9518apw
- Extend the I2C-bus with advanced repeaters and hubs; NXP® 2-channel I2C-bus repeaters PCA9515x and... pca9600
- Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
- PCA9511ADP IBIS model PCA9511ADP
- plastic thin shrink small outline package; 8 leads; body width 3 mm pesd5v0l7bas
- Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
- TSSOP8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... pesd5v0l7bas
- plastic small outline package; 8 leads; body width 3.9 mm CBT3306_Q100
- Footprint for reflow soldering NPIC6C596A_Q100
- Footprint for wave soldering NPIC6C596A_Q100
- SO8; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... CBT3306_Q100
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