PCA9515A

Manufacturer Part NumberPCA9515A
ManufacturerTexas Instruments
PCA9515A datasheet
 


Specifications of PCA9515A

No. Of Outputs2Vcc(min)(v)2.3
Vcc(max)(v)3.6Pin/package8MSOP, 8PDIP, 8SOIC, 8SON, 8TSSOP
Max Frequency(khz)400Vcc Range(v)2.3 to 5.5
Channel Width2Master Side I2c Bus Capacitance Supported(pf)400
Slave Side I2c Bus Capacitance Supported(pf)4005v Tolerant I/oYes
Open–drain I/o TypeYesEnable PinYes
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FEATURES
1
Two-Channel Bidirectional Buffers
2
I
C Bus and SMBus Compatible
Active-High Repeater-Enable Input
2
Open-Drain I
C I/O
2
5.5-V Tolerant I
C I/O and Enable Input Support
Mixed-Mode Signal Operation
Lockup-Free Operation
Accommodates Standard Mode and Fast Mode
2
I
C Devices and Multiple Masters
Supports Arbitration and Clock Stretching
Across the Repeater
Powered-Off High-Impedance I
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
DESCRIPTION/ORDERING INFORMATION
2
This dual bidirectional I
C buffer is operational at 2.3-V to 3.6-V V
The PCA9515A is a BiCMOS integrated circuit intended for I
device contains two identical bidirectional open-drain buffer circuits that enable I
extended without degradation of system performance. Both buffers specifically are designed to support the
standard low-level-contention arbitration of the I
The PCA9515A buffers both the serial data (SDA) and serial clock (SCL) signals on the I
all the operating modes and features of the I
2
connected in an I
C application.
2
The I
C bus capacitance limit of 400 pF restricts the number of devices and bus length. Using the PCA9515A
enables the system designer to isolate two halves of a bus, accommodating more I
lengths.
The PCA9515A has an active-high enable (EN) input with an internal pullup, which allows the user to select
when the repeater is active. This can be used to isolate a badly behaved slave on power-up reset. It never
2
should change state during an I
C operation, because disabling during a bus operation hangs the bus, and
enabling part way through a bus cycle could confuse the I
state only when the global bus and the repeater port are in an idle state, to prevent system failures.
The PCA9515A also can be used to run two buses: one at 5-V interface levels and the other at 3.3-V interface
levels, or one at 400-kHz operating frequency and the other at 100-kHz operating frequency. If the two buses are
operating at different frequencies, the 100-kHz bus must be isolated when the 400-kHz operation of the other bus
is required. If the master is running at 400 kHz, the maximum system operating frequency may be less than
400 kHz, because of the delays that are added by the repeater.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
DUAL BIDIRECTIONAL I
SCPS150B – DECEMBER 2005 – REVISED OCTOBER 2007
2
C Pins
.
CC
2
C bus and SMBus systems applications. The
2
C bus and support clock stretching.
2
C system. This enables two buses of 400-pF bus capacitance to be
2
C parts being enabled. The EN input should change
PCA9515A
2
C BUS AND SMBus REPEATER
D, DCT, DGK, OR PW PACKAGE
(TOP VIEW)
V
NC
1
8
CC
SCL0
2
7
SCL1
SDA0
3
6
SDA1
GND
4
5
EN
DRG PACKAGE
(TOP VIEW)
V
NC
1
8
CC
SCL0
2
7
SCL1
SDA0
3
6
SDA1
GND
4
5
EN
NC
No internal connection
2
C and similar bus systems to be
2
C bus, while retaining
2
C devices or longer trace
Copyright © 2005–2007, Texas Instruments Incorporated

PCA9515A Summary of contents

  • Page 1

    ... The PCA9515A also can be used to run two buses: one at 5-V interface levels and the other at 3.3-V interface levels, or one at 400-kHz operating frequency and the other at 100-kHz operating frequency. If the two buses are operating at different frequencies, the 100-kHz bus must be isolated when the 400-kHz operation of the other bus is required ...

  • Page 2

    ... Because there is no direction pin, slightly different valid low-voltage levels are used to avoid lockup conditions between the input and the output of each repeater. A valid low applied at the input of a PCA9515A is propagated as a buffered low with a slightly higher value on the enabled outputs. When this buffered low is applied to another PCA9515A-type device in series, the second device does not recognize valid low and does not propagate buffered low again ...

  • Page 3

    ... Supply power CC FUNCTION TABLE INPUT FUNCTION EN L Outputs disabled SDA0 = SDA1, H SCL0 = SCL1 LOGIC DIAGRAM (POSITIVE LOGIC Pullup 4 Product Folder Link(s): PCA9515A PCA9515A 2 C BUS AND SMBus REPEATER SCPS150B – DECEMBER 2005 – REVISED OCTOBER 2007 6 SDA1 7 SCL1 Submit Documentation Feedback 3 ...

  • Page 4

    ... DGK package DRG package PW package SDA and SCL inputs EN input SDA and SCL inputs EN input must be at least 70 mV below V . ILc OL Product Folder Link(s): PCA9515A www.ti.com MIN MAX UNIT –0.5 7 –0.5 7 –0.5 7 –50 –50 ±50 ±100 97 220 172 ...

  • Page 5

    ... MIN 45 SDA1, SCL1 or SDA0, SCL0 33 80% 20% 20% 80 3.3 V) and Product Folder Link(s): PCA9515A PCA9515A 2 C BUS AND SMBus REPEATER SCPS150B – DECEMBER 2005 – REVISED OCTOBER 2007 (1) V MIN TYP MAX CC 2 3.6 V –1.2 2 3.6 V 0.47 0.52 0 ...

  • Page 6

    ... PZL CC TEST CIRCUIT FOR OPEN-DRAIN OUTPUT 1 PZL 80% 1.5 V 1.5 V 20% 20% t tHL VOLTAGE WAVEFORMS of pulse generators. OUT . pd . dis . en Product Folder Link(s): PCA9515A www.ti.com 1.35 kΩ (see Note PLZ tLH = 50 Ω, O Copyright © 2005–2007, Texas Instruments Incorporated ...

  • Page 7

    ... I C BUS MASTER 400 kHz The PCA9515A is 5.5-V tolerant does not require any additional circuitry to translate between the different bus voltages. When one side of the PCA9515A is pulled low by a device on the I the falling edge and causes an internal driver on the other side to turn on, thus causing the other side also to go low ...

  • Page 8

    ... V of PCA9515A OL On the Bus 1 side of the PCA9515A, the clock and data lines have a positive offset from ground equal to the V of the PCA9515A. After the eighth clock pulse, the data line is pulled to the V close to ground in the example important to note that any arbitration or clock-stretching events on Bus 1 require that the V on Bus below the V recognized by the PCA9515A and transmitted to Bus 0 ...

  • Page 9

    ... ACTIVE PCA9515ADGKTG4 ACTIVE PCA9515ADR ACTIVE PCA9515ADRG4 ACTIVE PCA9515ADRGR ACTIVE PCA9515ADT ACTIVE PCA9515ADTG4 ACTIVE PCA9515AP ACTIVE PCA9515APW ACTIVE PCA9515APWG4 ACTIVE PCA9515APWR ACTIVE PCA9515APWRG4 ACTIVE PCA9515APWT ACTIVE PCA9515APWTG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. ...

  • Page 10

    The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of ...

  • Page 11

    ... Device Package Package Type Drawing PCA9515ADGKR MSOP DGK PCA9515ADGKR MSOP DGK PCA9515ADGKT MSOP DGK PCA9515ADGKT MSOP DGK PCA9515ADR SOIC PCA9515ADRGR SON DRG PCA9515ADT SOIC PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel Diameter Width (mm) W1 (mm) 8 2500 330.0 12.4 8 2500 330 ...

  • Page 12

    ... Device Package Type PCA9515ADGKR MSOP PCA9515ADGKR MSOP PCA9515ADGKT MSOP PCA9515ADGKT MSOP PCA9515ADR SOIC PCA9515ADRGR SON PCA9515ADT SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) DGK 8 2500 DGK 8 2500 DGK 8 250 DGK 8 250 D 8 2500 ...

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    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...