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TCA9517ADGKR Fiches technique(PDF) 1 Page - Texas Instruments |
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TCA9517ADGKR Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 17 page DGK PACKAGE (TOP VIEW) 1 8 V CCA V CCB 4 5 GND EN 3 6 SDAA SDAB 2 7 SCLA SCLB TCA9517A www.ti.com SCPS245A – DECEMBER 2012 – REVISED APRIL 2013 LEVEL-TRANSLATING I2C BUS REPEATER Check for Samples: TCA9517A 1 FEATURES • Two-Channel Bidirectional Buffer Mixed-Mode Signal Operation • I2C Bus and SMBus Compatible • Lockup-Free Operation • Operating Supply Voltage Range of • Accommodates Standard Mode and Fast Mode 0.9 V to 5.5 V on A Side I2C Devices and Multiple Masters • Operating Supply Voltage Range of • Powered-Off High-Impedance I2C Pins 2.7 V to 5.5 V on B Side • 400-kHz Fast I2C Bus • Voltage-Level Translation From 0.9 V to 5.5 V • Latch-Up Performance Exceeds 100 mA Per and 2.7 V to 5.5 V JESD 78, Class II • Footprint and Function Replacement for • ESD Protection Exceeds JESD 22 PCA9515B – 5500-V Human-Body Model (A114-A) • Active-High Repeater-Enable Input – 200-V Machine Model (A115-A) • Open-Drain I2C I/O – 1000-V Charged-Device Model (C101) • 5.5-V Tolerant I2C and Enable Input Support DESCRIPTION/ORDERING INFORMATION This dual bidirectional I2C buffer is operational at 2.7 V to 5.5 V. The TCA9517A is a BiCMOS integrated circuit intended for I2C bus and SMBus systems. It can provide bidirectional voltage-level translation (up-translation/down-translation) between low voltages (down to 0.9 V) and higher voltages (2.7 V to 5.5 V) in mixed-mode applications. This device enables I2C and similar bus systems to be extended, without degradation of performance even during level shifting. The TCA9517A buffers both the serial data (SDA) and the serial clock (SCL) signals on the I2C bus, thus allowing two buses of 400-pF bus capacitance to be connected in an I2C application. This device can also be used to isolate two halves of a bus for voltage and capacitance. The TCA9517A has two types of drivers—A-side drivers and B-side drivers. All inputs and I/Os are overvoltage tolerant to 5.5 V, even when the device is unpowered (VCCB and/or VCCA = 0 V). The TCA9517A offers a higher contention level threshold, VILC, than the TCA9517 and can be used in applications where a larger input logic low is required on the B-side. ORDERING INFORMATION TA PACKAGES(1) (2) ORDERABLE PART NUMBER TOP-SIDE MARKING –40°C to 85°C VSSOP – DGK Tape and reel TCA9517ADGKR BSK (1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. (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. 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. Copyright © 2012–2013, 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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