PCA9510ADP NXP [NXP Semiconductors], PCA9510ADP Datasheet

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PCA9510ADP

Manufacturer Part Number
PCA9510ADP
Description
Hot swappable I2C-bus and SMBus bus buffer
Manufacturer
NXP [NXP Semiconductors]
Datasheet

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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

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PCA9510ADP 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

... A current source on SCLIN and SDAIN for PICMG applications 5. Ordering information Table 2. Ordering information +85 C. amb Type number Topside Package mark Name PCA9510AD PA9510A SO8 PCA9510ADP 9510A TSSOP8 [1] Also known as MSOP8. PCA9510A_4 Product data sheet Hot swappable I PCA9510A PCA9511A PCA9512A PCA9513A PCA9514A yes = 0 V yes ...

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 ...

Page 4

... SDA bus on the backplane 7 serial data output to and from the SDA bus on the card 8 power supply Rev. 04 — 18 August 2009 PCA9510A 2 Hot swappable I C-bus and SMBus bus buffer ENABLE 1 SCLOUT 2 PCA9510ADP SCLIN 3 GND 4 002aab783 Fig 3. Pin configuration for TSSOP8 SDAOUT 6 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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) ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 – ...

Page 23

NXP Semiconductors 17. Legal information 17.1 Data sheet status [1][2] Document status Product status Objective [short] data sheet Development Preliminary [short] data sheet Qualification Product [short] data sheet Production [1] Please consult the most recently issued document before initiating or ...

Page 24

NXP Semiconductors 19. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . ...

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