PCA9510AD,112 NXP Semiconductors, PCA9510AD,112 Datasheet

IC I2C/SMBUS BUFF 8-SOIC

PCA9510AD,112

Manufacturer Part Number
PCA9510AD,112
Description
IC I2C/SMBUS BUFF 8-SOIC
Manufacturer
NXP Semiconductors
Type
Bufferr
Datasheet

Specifications of PCA9510AD,112

Tx/rx Type
I²C Logic
Delay Time
35ns
Capacitance - Input
1.9pF
Voltage - Supply
2.7 V ~ 5.5 V
Current - Supply
6mA
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
568-3357-5
935280025112
PCA9510AD
1. General description
2. Features
The PCA9510A is a hot swappable I
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 PCA9510A provides bidirectional buffering, keeping the
backplane and card capacitances isolated.
The PCA9510A has no rise time accelerator circuitry to prevent interference when there
are multiple devices in the same system. The PCA9510A 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 PCA9510A SDAIN and SCLIN pins (inputs only) are precharged to
1 V to minimize the current required to charge the parasitic capacitance of the chip.
Remark: The dynamic offset design of the PCA9510A/11A/12A/13A/14A I/O drivers allow
them to be connected to another PCA9510A/11A/12A/13A/14A device in series or in
parallel and to the A side of the PCA9517. The PCA9510A/11A/12A/13A/14A cannot
connect to the static offset I/Os used on the PCA9515/15A/16/16A/18 or PCA9517 B side
or P82B96 Sx/y side.
I
I
I
I
I
I
I
I
I
I
I
I
I
PCA9510A
Hot swappable I
Rev. 04 — 18 August 2009
Bidirectional buffer for SDA and SCL lines increases fan-out and prevents SDA and
SCL corruption during live board insertion and removal from multipoint backplane
systems
Compatible with Standard-mode I
Active HIGH ENABLE input
Active HIGH READY open-drain output
High-impedance SDAn and SCLn pins for V
1 V precharge on SDAIN and SCLIN inputs
Supports clock stretching and multiple master arbitration and synchronization
Operating power supply voltage range: 2.7 V to 5.5 V
5 V tolerant I/Os
0 Hz to 400 kHz clock frequency
ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per
JESD22-A115, and 1000 V CDM per JESD22-C101
Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
Packages offered: SO8, TSSOP8 (MSOP8)
2
C-bus and SMBus bus buffer
2
2
C-bus and SMBus buffer that allows I/O card
C-bus, Fast-mode I
CC
= 0 V
2
C-bus, and SMBus standards
Product data sheet

Related parts for PCA9510AD,112

PCA9510AD,112 Summary of contents

Page 1

PCA9510A Hot swappable I Rev. 04 — 18 August 2009 1. General description The PCA9510A is a hot swappable I insertion into a live backplane without corrupting the data and clock buses. Control circuitry prevents the backplane from being connected ...

Page 2

... NXP Semiconductors 3. Applications I cPCI, VME, AdvancedTCA cards and other multipoint backplane cards that are required to be inserted or removed from an operating system 4. Feature selection Table 1. Feature selection chart Feature Idle detect High-impedance SDA, SCL pins for V Rise time accelerator circuitry on SDAn and SCLn pins ...

Page 3

... NXP Semiconductors 6. Block diagram PCA9510A SDAIN CONNECT 100 k RCH1 100 k RCH2 SCLIN CONNECT 0.55V / CC 0.45V CC UVLO 100 s ENABLE DELAY Fig 1. Block diagram of PCA9510A PCA9510A_4 Product data sheet Hot swappable I BACKPLANE-TO-CARD CONNECTION CONNECT CONNECT ENABLE 1 VOLT PRECHARGE BACKPLANE-TO-CARD CONNECTION CONNECT STOP BIT AND BUS IDLE 0 ...

Page 4

... NXP Semiconductors 7. Pinning information 7.1 Pinning ENABLE SCLOUT SCLIN Fig 2. 7.2 Pin description Table 3. Symbol ENABLE SCLOUT SCLIN GND READY SDAIN SDAOUT V CC PCA9510A_4 Product data sheet SDAOUT PCA9510AD 3 6 SDAIN GND 4 5 READY 002aab782 Pin configuration for SO8 Pin description ...

Page 5

... NXP Semiconductors 8. Functional description Refer to 8.1 Start-up An undervoltage and initialization circuit holds the parts in a disconnected state which presents high-impedance to all SDAn and SCLn pins during power-up. A LOW on the ENABLE pin also forces the parts into the low current disconnected state when the I essentially zero ...

Page 6

... NXP Semiconductors 8.3 Maximum number of devices in series Each buffer adds about 0.1 V dynamic level offset with the offset larger at higher temperatures. Maximum offset (V level at the signal origination end (master) is dependent upon the load and the only specification point is the I lightly loaded the V after four buffers would be 0 ...

Page 7

... NXP Semiconductors 8.4 Propagation delays The delay for a rising edge is determined by the combined pull-up current from the bus resistors and the rise time accelerator current source and the effective capacitance on the lines. If the pull-up currents are the same, any difference in rise time is directly proportional to the difference in capacitance between the two sides ...

Page 8

... NXP Semiconductors (1) Unshaded area indicates recommended pull-up. Fig (1) Unshaded area indicates recommended pull-up. Fig 6. 8.8 Hot swapping and capacitance buffering application Figure 7 advantage of both its hot swapping and capacitance buffering features. In all of these applications, note that if the I/O cards were plugged directly into the backplane, all of the backplane and card capacitances would add directly together, making rise time and fall time requirements diffi ...

Page 9

... NXP Semiconductors See Application Note AN10160, ‘Hot Swap Bus Buffer’ for more information on applications and technical assistance. BACKPLANE CONNECTOR BACKPLANE BD_SEL SDA SCL Remark: The PCA9510A can be used in any combination depending on the number of rise time accelerators that are needed by the system. Normally only one PCA9510A would be required per bus. ...

Page 10

... NXP Semiconductors BACKPLANE CONNECTOR BACKPLANE SDA SCL Fig 8. Hot swapping multiple I/O cards into a backplane using the PCA9510A in a PCI system ENABLE SDA1 SDAIN SCLIN SCL1 to other System 1 devices Remark: See Application Note AN255, ‘I optimized for long distance transmission of the I Fig 9 ...

Page 11

... NXP Semiconductors Fig 10. System with disparate V 9. Application design-in information Fig 11. Typical application 10. Limiting values Table 4. In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol oper T stg j(max) [1] Voltages with respect to pin GND. PCA9510A_4 Product data sheet R drop ...

Page 12

... NXP Semiconductors 11. Characteristics Table 5. Characteristics +85 C; unless otherwise specified. CC amb Symbol Parameter Power supply V supply voltage CC I supply current CC I Shut-down mode supply CC(sd) current Start-up circuitry V precharge voltage pch V HIGH-level input voltage IH(ENABLE) on pin ENABLE V LOW-level input voltage ...

Page 13

... NXP Semiconductors Table 5. Characteristics …continued +85 C; unless otherwise specified. CC amb Symbol Parameter Input-output connection V offset voltage offset t LOW to HIGH PLH propagation delay t HIGH to LOW PHL propagation delay C SCL and SDA input i(SCL/SDA) capacitance V LOW-level output voltage OL I input leakage current ...

Page 14

... NXP Semiconductors 11.1 Typical performance characteristics 3 (mA) 3.3 2.9 2.5 40 +25 Fig 12. I versus temperature CC Fig 14. Connection circuitry V PCA9510A_4 Product data sheet 002aab588 PHL (ns) 3.3 V 2 amb Fig 13. Input/output t 350 (mV) 250 150 3 Rev. 04 — 18 August 2009 PCA9510A 2 Hot swappable I C-bus and SMBus bus buffer ...

Page 15

... NXP Semiconductors 11.2 Timing diagrams SDAn/SCLn ENABLE READY Fig 15. Timing for idle(READY) SDAIN SCLIN SCLOUT SDAOUT ENABLE READY t is only applicable after the t stp(READY) Fig 16. t that can occur after t stp(READY) SCLIN, SDAIN, SCLOUT, SDAOUT ENABLE READY t is only applicable after the t stp(READY) Fig 17 ...

Page 16

... NXP Semiconductors 12. Test information R = load resistor load capacitance includes jig and probe capacitance termination resistance should be equal to the output impedance Z T Fig 18. Test circuitry for switching times PCA9510A_4 Product data sheet Hot swappable PULSE DUT GENERATOR Rev. 04 — 18 August 2009 PCA9510A ...

Page 17

... NXP Semiconductors 13. Package outline SO8: plastic small outline package; 8 leads; body width 3 pin 1 index 1 DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT max. 0.25 1.45 mm 1.75 0.25 0.10 1.25 0.010 0.057 inches 0.069 0.01 0.004 0.049 Notes 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. ...

Page 18

... NXP Semiconductors TSSOP8: plastic thin shrink small outline package; 8 leads; body width pin 1 index 1 e DIMENSIONS (mm are the original dimensions UNIT max. 0.15 0.95 mm 1.1 0.25 0.05 0.80 Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic or metal protrusions of 0.25 mm maximum per side are not included. ...

Page 19

... NXP Semiconductors 14. Soldering of SMD packages This text provides a very brief insight into a complex technology. A more in-depth account of soldering ICs can be found in Application Note AN10365 “Surface mount reflow soldering description” . 14.1 Introduction to soldering Soldering is one of the most common methods through which packages are attached to Printed Circuit Boards (PCBs), to form electrical circuits ...

Page 20

... NXP Semiconductors 14.4 Reflow soldering Key characteristics in reflow soldering are: • Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to higher minimum peak temperatures (see reducing the process window • Solder paste printing issues including smearing, release, and adjusting the process window for a mix of large and small components on one board • ...

Page 21

... NXP Semiconductors Fig 21. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 “Surface mount reflow soldering description” . 15. Abbreviations Table 8. Acronym AdvancedTCA CDM cPCI DUT ESD HBM 2 I C-bus MM PCI PICMG RC SMBus ...

Page 22

... NXP Semiconductors 16. Revision history Table 9. Revision history Document ID Release date PCA9510A_4 20090818 • Modifications: Section 8.7 “Resistor pull-up value “... always choose R maximum.” to “always choose 3.6 V maximum.” CC • Updated – changed from “rise time < 20 ns” to “rise time = 20 ns” ...

Page 23

... Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice ...

Page 24

... NXP Semiconductors 19. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 Feature selection . . . . . . . . . . . . . . . . . . . . . . . . 2 5 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 6 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 7.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 8 Functional description . . . . . . . . . . . . . . . . . . . 5 8.1 Start-up 8.2 Connect circuitry 8.3 Maximum number of devices in series . . . . . . . 6 8.4 Propagation delays . . . . . . . . . . . . . . . . . . . . . . 7 8 ...

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