PCA9515B

Manufacturer Part NumberPCA9515B
ManufacturerTexas Instruments
PCA9515B datasheet
 


Specifications of PCA9515B

No. Of Outputs2Vcc(min)(v)2.3
Vcc(max)(v)3.6Pin/package8MSOP
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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DUAL BIDIRECTIONAL I
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, Fast Mode I
Devices, and Multiple Masters
Supports Arbitration and Clock Stretching
Across Repeater
Powered-Off High-Impedance I
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class I
ESD Protection Exceeds JESD 22
DESCRIPTION
The PCA9515B is a BiCMOS integrated circuit intended for I
device contains two identical bidirectional open-drain buffer circuits that enables I
be extended without degrading system performance. The dual bidirectional I
3.6-V V
.
CC
The PCA9515B buffers both the serial data (SDA) and serial clock (SCL) signals on the I
all the operating modes and features of the I
capacitance, to be connected in an I
2
The I
C bus capacitance limit of 400 pF restricts the number of interfaced devices and bus length. Using the
PCA9515B, a system designer can isolate two halves of a bus, thus accommodating more I
trace lengths.
The PCA9515B has an active-high enable (EN) input with an internal pull-up. This allows users to select when
the repeater is active and isolate malfunctioning slaves on power-up reset. States should never be changed
2
during an I
C operation. Disabling during a bus operation will hang the bus and enabling part way through a bus
2
cycle may confuse the I
C parts being enabled. The EN input should only change state when the global bus and
the repeater port are in an idle state to prevent system failures.
The PCA9515B can also be used to operate two buses, one at 5-V interface levels and the other at 3.3-V
interface levels. The buses may also function at 400-kHz or 100-kHz operating frequency. If the two buses are
operating at different frequencies, the 100-kHz bus must be isolated if the operation of the 400-kHz bus is
required. If the master is running at 400-kHz, the maximum system operating frequency may be less than
400 kHz due to the delays 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.
2
C BUS AND SMBus REPEATER
Check for Samples:
PCA9515B
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
2
C
2
C Pins
2
C bus and SMBus systems applications. The
2
C system. This feature allows two buses, of 400-pF bus
2
C application.
PCA9515B
SCPS232 – MARCH 2012
DGK PACKAGE
(TOP VIEW)
V
NC
1
8
CC
SCL0
2
7
SCL1
SDA0
3
6
SDA1
4
5
GND
EN
NC
No internal connection
2
C and similar bus systems to
2
C buffer is operational at 2.3-V to
2
C bus, while retaining
2
C devices or longer
Copyright © 2012, Texas Instruments Incorporated

PCA9515B Summary of contents

  • Page 1

    ... C parts being enabled. The EN input should only change state when the global bus and the repeater port are in an idle state to prevent system failures. The PCA9515B can also be used to operate two buses, one at 5-V interface levels and the other at 3.3-V interface levels. The buses may also function at 400-kHz or 100-kHz operating frequency. If the two buses are operating at different frequencies, the 100-kHz bus must be isolated if the operation of the 400-kHz bus is required ...

  • Page 2

    ... A valid low, applied at the input of a PCA9515B, is propagated as a buffered low with a higher value on the enabled outputs. When this buffered low is applied to another PCA9515B-type device in series, the second device does not recognize valid low and does not propagate buffered low ...

  • Page 3

    ... Serial data bus 1 SCL1 Serial clock bus 1 V Supply power CC Table 1. FUNCTION TABLE INPUT FUNCTION EN L Outputs disabled SDA0 = SDA1, H SCL0 = SCL1 LOGIC DIAGRAM (POSITIVE LOGIC Product Folder Link(s): PCA9515B PCA9515B SCPS232 – MARCH 2012 6 SDA1 7 SCL1 Submit Documentation Feedback 3 ...

  • Page 4

    ... O or GND DGK 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): PCA9515B www.ti.com MIN MAX UNIT –0 –0 –0 –50 mA –50 mA ±50 mA ± ...

  • Page 5

    ... V = 2.5 V ± 0.2 V FROM TO CC (INPUT) (OUTPUT) MIN 45 SDA1, SCL1 or SDA0, SCL0 33 80% 20% 20% 80 3.3 V) and T = 25° Product Folder Link(s): PCA9515B PCA9515B SCPS232 – MARCH 2012 (1) V MIN TYP MAX CC 2 3.6 V –1.2 2 3.6 V 0.4 0.5 0 2.7 V 0.5 3 3.6 V 0 ...

  • Page 6

    ... PZL CC TEST CIRCUIT FOR OPEN-DRAIN OUTPUT 1 PZL PLZ 80% 80% 1.5 V 1.5 V 20% 20% t tHL VOLTAGE WAVEFORMS of pulse generators. OUT . . . Product Folder Link(s): PCA9515B www.ti.com 1.35 kΩ L GND (see Note tLH = 50 Ω, O Copyright © 2012, Texas Instruments Incorporated ...

  • Page 7

    ... I C BUS MASTER 400 kHz The PCA9515B is 5.5-V tolerant does not require any additional circuitry to translate between the different bus voltages. When one side of the PCA9515B 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

    ... SDA V of PCA9515B OL On the Bus 1 side of the PCA9515B, the clock and data lines have a positive offset from ground equal to the V of the PCA9515B. After the eighth clock pulse, the data line is pulled to the V close to ground in the example. 8 Submit Documentation Feedback ...

  • Page 9

    ... PACKAGING INFORMATION Orderable Device (1) Package Type Package Status PCA9515BDGKR ACTIVE MSOP (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. ...

  • Page 10

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing PCA9515BDGKR MSOP DGK PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 8 2500 330.0 12.4 5.3 Pack Materials-Page 1 8-Mar-2012 Pin1 (mm) (mm) (mm) (mm) Quadrant 3.3 1.3 8.0 12.0 Q1 ...

  • Page 11

    ... Device Package Type PCA9515BDGKR MSOP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) DGK 8 2500 Pack Materials-Page 2 8-Mar-2012 Width (mm) Height (mm) 346.0 346.0 35.0 ...

  • Page 12

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  • Page 13

    ... 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’ ...