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FSTD3125QSC Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FSTD3125QSC Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 7 page © 2005 Fairchild Semiconductor Corporation DS500448 www.fairchildsemi.com June 2001 Revised January 2005 FSTD3125 4-Bit Bus Switch with Level Shifting General Description The Fairchild Switch FSTD3125 provides four high-speed CMOS TTL-compatible bus switches. The low On Resis- tance of the switch allows inputs to be connected to out- puts without adding propagation delay or generating additional ground bounce noise. A diode to VCC has been integrated into the circuit to allow for level shifting between 5V inputs and 3.3V outputs. The device is organized as four 1-bit switches with sepa- rate OE inputs. When OE is LOW, the switch is ON and Port A is connected to Port B. When OE is HIGH, the switch is OPEN and a high-impedance state exists between the two ports. Features s 4 Ω switch connection between two ports s Minimal propagation delay through the switch s Low lCC s Zero bounce in flow-through mode s Control inputs compatible with TTL level s TruTranslation voltage translation from 5.0V inputs to 3.3V outputs Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Pb-Free package per JEDEC J-STD-020B. Connection Diagrams Pin Assignment for SOIC and TSSOP Pin Assignment for QSOP Pin Descriptions Truth Table TruTranslation is a trademark of Fairchild Semiconductor Corporation. Order Package Package Description Number Number FSTD3125M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow FSTD3125QSC MQA16 16-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide FSTD3125MTC MTC14 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide FSTD3125MTC_NL MTC14 Pb-Free 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Pin Name Description OE1, OE2, OE3, OE4 Bus Switch Enables 1A, 2A, 3A, 4A Bus A 1B, 2B, 3B, 4B Bus B NC Not Connected Inputs Inputs/Outputs OE A, B LA = B HZ |
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