DatasheetsPDF.com

FXL2TD245 Dataheets PDF



Part Number FXL2TD245
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description Low Voltage Dual Supply 2-Bit Signal Translator
Datasheet FXL2TD245 DatasheetFXL2TD245 Datasheet (PDF)

www.DataSheet4U.com FXL2TD245 Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs and Independent Direction Controls November 2006 FXL2TD245 Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs and Independent Direction Controls General Description The FXL2TD245 is a configurable dual-voltage-supply translator designed for both uni-directional and bi-directio.

  FXL2TD245   FXL2TD245



Document
www.DataSheet4U.com FXL2TD245 Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs and Independent Direction Controls November 2006 FXL2TD245 Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs and Independent Direction Controls General Description The FXL2TD245 is a configurable dual-voltage-supply translator designed for both uni-directional and bi-directional voltage translation between two logic levels. The device allows translation between voltages as high as 3.6V to as low as 1.1V. The A Port tracks the VCCA level, and the B Port tracks the VCCB level. This allows for bi-directional voltage translation over a variety of voltage levels: 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The device remains in 3-STATE until both VCCs reach active levels allowing either VCC to be powered-up first. Internal power down control circuits place the device in 3-STATE if either VCC is removed. The Transmit/Receive inputs independently determine the direction of data through each of the two bits. The OE input, when HIGH, disables both the A and B Ports by placing them in a 3-STATE condition. The FXL2TD245 is designed so that the control pins (T/R and OE) are supplied by VCCA. tm Features ■ Bi-directional interface between any 2 levels from 1.1V to 3.6V ■ Fully configurable: Inputs track VCC level ■ Non-preferential power-up sequencing; either VCC may be powered-up first ■ Outputs remain in 3-STATE until active VCC level is reached ■ Outputs switch to 3-STATE if either VCC is at GND ■ Power-off protection ■ Control inputs (T/Rn, OE) levels are referenced to VCCA voltage ■ Packaged in the Chipscale MicroPak10 (1.6mm x 2.1mm) ■ ESD protections exceeds: – 4kV HBM ESD (per JESD22-A114 & Mil Std 883e 3015.7) – 8kV HBM I/O to GND ESD (per JESD22-A114 & Mil Std 883e 3015.7) – 1kV CDM ESD (per ESD STM 5.3) – 200V MM ESD (per JESD22-A115 & ESD STM5.2) Ordering Information Order Number FXL2TD245L10X Package Number MAC010A Pb-Free Yes Package Description 10-Lead MicroPak, 1.6mm x 2.1mm Pb-Free package per JEDEC J-STD-020B. ©2005 Fairchild Semiconductor Corporation FXL2TD245 Rev. 1.0.4 www.fairchildsemi.com 1 FXL2TD245 Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs and Independent Direction Controls Functional Diagram VCCA OE A0 B0 T/R0 A1 B1 T/R1 VCCB Pin Descriptions Pin Names OE T/Rn An Bn VCCA VCCB Description Output Enable Input Transmit/Receive Inputs Side A Inputs or 3-STATE Outputs Side B Inputs or 3-STATE Outputs Side A Power Supply Side B Power Supply Truth Table Inputs OE T/R0 T/R1 L L L L H B0 9 Outputs B0 Data to A0 Output A0 Data to B0 Output B1 Data to A1 Output A1 Data to B1 Output 3-STATE L H X X X X X L H X Connection Diagram B1 8 OE 7 T/R1 6 H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care VCCB 10 5 GND Power-Up/Power-Down Sequencing FXL translators offer an advantage in that either VCC may be powered up first. This benefit derives from the chip design. When either VCC is at 0 volts, outputs are in a HIGH-Impedance state. The control inputs (T/Rn and OE) are designed to track the VCCA supply. A pull-up resistor tying OE to VCCA should be used to ensure that bus contention, excessive currents, or oscillations do not occur during power-up/power-down. The size of the pullup resistor is based upon the current-sinking capability of the OE driver. The recommended power-up sequence is the following: 1. Apply power to either VCC. 2. Apply power to the T/Rn inputs (Logic HIGH for A-to-B operation; Logic LOW for B-to-A operation) and to the respective data inputs (A Port or B Port). This may occur at the same time as Step 1. 3. Apply power to other VCC. 4. Drive the OE input LOW to enable the device. The recommended power-down sequence is the following: 1. Drive OE input HIGH to disable the device. 2. Remove power from either VCC. 3. Remove power from other VCC. 1 2 3 4 VCCA A0 A1 T/R0 (Top View) Pin Assignment Pin Number 1 2 3 4 5 6 7 8 9 10 Terminal Name VCCA A0 A1 T/R0 GND T/R1 OE B1 B0 VCCB ©2005 Fairchild Semiconductor Corporation FXL2TD245 Rev. 1.0.4 www.fairchildsemi.com 2 FXL2TD245 Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs and Independent Direction Controls Absolute Maximum Ratings The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Symbol VCCA, VCCB VI Supply Voltage Parameter DC Input Voltage I/O Port A I/O Port B Control Inputs (T/Rn, OE) Output Voltage(1.


DT32-2055AS FXL2TD245 HFA25TB60S


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)