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PCA9518DBQRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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PCA9518DBQRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 20 page www.ti.com FEATURES DB, DBQ, DW, OR PW PACKAGE (TOP VIEW) EXPSCL1 EXPSCL2 SCL0 SDA0 SCL1 SDA1 EN1 SCL2 SDA2 GND VCC EXPSDA2 EXPSDA1 EN4 SDA4 SCL4 EN3 SDA3 SCL3 EN2 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 DESCRIPTION/ORDERING INFORMATION PCA9518 EXPANDABLE FIVE-CHANNEL I2C HUB SCPS132A – JUNE 2006 – REVISED JULY 2007 • Expandable Five-Channel Bidirectional Buffer • Powered-Off High-Impedance I2C Pins • 400-kHz Fast I2C Bus • I2C Bus and SMBus Compatible • Operating V CC Range of 3 V to 3.6 V • Latchup Performance Exceeds 100 mA Per JESD 78 • 5-V Tolerant I2C and Enable Input Pins to Support Mixed-Mode Signal Operation • ESD Protection Exceeds JESD 22 • Active-High Individual Repeater Enable Inputs – 2000-V Human-Body Model (A114-A) • Open-Drain Input/Outputs – 200-V Machine Model (A115-A) • Lockup-Free Operation – 1000-V Charged-Device Model (C101) • Supports Arbitration and Clock Stretching Across the Repeater • Supports Multiple Masters The PCA9518 is an expandable five-channel bidirectional buffer for I2C and SMBus applications. The I2C protocol requires a maximum bus capacitance of 400 pF, which is derived from the number of devices on the I2C bus and the bus length. The PCA9518 overcomes this restriction by separating and buffering the I2C data (SDA) and clock (SCL) lines into multiple groups of 400-pF segments. Any segment-to-segment transition sees only one repeater delay. Each PCA9518 can communicate with other PCA9518 hubs through a 4-wire inter-hub expansion bus. Using multiple PCA9518 parts, any width hub (in multiples of five) can be implemented using the expansion pins, with only one repeater delay and no functional degradation of the system performance. ORDERING INFORMATION TA PACKAGE(1)(2) ORDERABLE PART NUMBER TOP-SIDE MARKING SSOP – DB Reel of 2000 PCA9518DBR PD518 QSOP – DBQ Reel of 2500 PCA9518DBQR PCA9518 Tube of 25 PCA9518DW –40 °C to 85°C SOIC – DW PCA9518 Reel of 2000 PCA9518DWR Tube of 70 PCA9518PW TSSOP – PW PD518 Reel of 2000 PCA9518PWR (1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. (2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. 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. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2006–2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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