FSTD3306 2-Bit Low-Power Bus Switch with Level Shifting
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FSTD3306MTCX (pdf) |
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FSTD3306L8X |
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FSTD3306MTC |
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FSTD3306 2-Bit Low-Power Bus Switch with Level Shifting August 2006 FSTD3306 2-Bit Low-Power Bus Switch with Level Shifting Typical 3Ω switch resistance at 5.0V VCC, VIN = 0V Level shift facilitates 5V to 3.3V interfacing Minimal propagation delay through the switch Power down high impedance input/output Zero bounce in flow-through mode TTL compatible active LOW control inputs Control inputs are over-voltage tolerant The FSTD3306 is a 2-bit ultra high-speed CMOS FET bus switch with enhanced level-shifting circuitry and TTL-compatible active LOW control inputs. The low on resistance of the switch allows inputs to be connected to outputs with minimal propagation delay and without generating additional ground bounce noise. The device is organized as a 2-bit switch with independent busenable BE controls. When BE is LOW, the switch is ON and Port A is connected to Port B. When BE is HIGH, the switch is OPEN and a high-impedance state exists between the two ports. Reduced voltage drive to the gate of the FET switch permits nominal level shifting of 5V to 3V through the switch. Control inputs tolerate voltages up to 5.5V independent of VCC. Ordering Information Top Mark Package PbFree Operating Temperature Packing Method Range FSTD3306MTCX FD3306 8-Lead Thin Shrink Small Outline Package Yes -40 to +85°C TSSOP , JEDEC MO-153, 4.4mm Wide Tape & Reel FSTD3306MTC FD3306 8-Lead Thin Shrink Small Outline Package Yes -40 to +85°C TSSOP , JEDEC MO-153, 4.4mm Wide Tube FSTD3306L8X TD 8-Lead MicroPak Yes -40 to +85°C 5000 units on Reel Logic Diagram Figure Logical Connections for the FSTD3306 FSTD3306 2-Bit Low-Power Bus Switch with Level Shifting Connections Diagram Figure TSSOP Pin Outs Top View Pin Definitions Pin Description A Bus A switch I/O B Bus B switch I/O BE Bus enable input Function Table Bus Enable Input BE LOW Logic Level HIGH Logic Level Function B connected to A Disconnected BE1 1 7 BE2 Figure MicroPak Pin Outs Top View 2001 Fairchild Semiconductor Corporation FSTD3306 2-Bit Low-Power Bus Switch with Level Shifting 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 defines the conditions for actual device operation. Symbol Parameter Condition Min. Typ. Unit Supply Voltage |
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