DUAL BIDIRECTIONAL I
2
C BUS AND SMBus REPEATER
www.ti.com
SCPS150A – DECEMBER 2005 – REVISED JUNE 2006
FEATURES
•
•
•
•
•
•
•
•
•
•
Two-Channel Bidirectional Buffers
I
2
C Bus and SMBus Compatible
Active-High Repeater-Enable Input
Open-Drain I
2
C I/O
5.5-V Tolerant I
2
C I/O and Enable Input
Support Mixed-Mode Signal Operation
Lockup-Free Operation
Accommodates Standard Mode and Fast
Mode I
2
C Devices and Multiple Masters
Supports Arbitration and Clock Stretching
Across the Repeater
Powered-Off High-Impedance I
2
C Pins
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)
D, DCT, DGK, OR PW PACKAGE
(TOP VIEW)
NC
SCL0
SDA0
GND
1
2
3
4
8
7
6
5
V
CC
SCL1
SDA1
EN
NC
–
No internal connection
DESCRIPTION/ORDERING INFORMATION
This dual bidirectional I
2
C buffer is operational at 2.3-V to 3.6-V V
CC
.
The PCA9515A is a BiCMOS integrated circuit intended for I
2
C bus and SMBus systems applications. The
device contains two identical bidirectional open-drain buffer circuits that enable I
2
C and similar bus systems to
be extended without degradation of system performance. Both buffers specifically are designed to support the
standard low-level-contention arbitration of the I
2
C bus and support clock stretching.
The PCA9515A buffers both the serial data (SDA) and serial clock (SCL) signals on the I
2
C bus, while retaining
all the operating modes and features of the I
2
C system. This enables two buses of 400-pF bus capacitance to be
connected in an I
2
C application.
The I
2
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
2
C devices or longer trace
lengths.
ORDERING INFORMATION
T
A
SOIC – D
PACKAGE
(1)
Tube of 75
Reel of 2500
Reel of 250
–40°C to 85°C
SSOP – DCT
Reel of 3000
Reel of 250
Tube of 150
TSSOP – PW
VSSOP – DGK
(1)
(2)
Reel of 2000
Reel of 250
Reel of 2500
ORDERABLE PART NUMBER
PCA9515AD
PCA9515ADR
PCA9515ADT
PCA9515ADCTR
PCA9515ADCTT
PCA9515APW
PCA9515APWR
PCA9515APWT
PCA9515ADGKR
7B_
PD515A
PREVIEW
PD515A
TOP-SIDE MARKING
(2)
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
DCT: The actual top-side marking has three additional characters that designate the year, month, and assembly/test site.
DGK: The actual top-side marking has one additional character that designates the assembly/test site.
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.
Copyright © 2005–2006, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
