FST162861MTDX
FST162861MTDX Datasheet
FST162861 20-Bit Bus Switch with 25 Series Resistors in Outputs
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FST162861MTDX |
FST162861MTDX (pdf) |
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| FST162861 20-Bit Bus Switch with 25 Series Resistors in Outputs FST162861 20-Bit Bus Switch with 25 Series Resistors in Outputs The Fairchild Switch FST162861 provides 20-bits of highspeed CMOS TTL-compatible bus switching. The low On Resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. The device is organized as a 10-bit or 20-bit bus switch. When OE1 is LOW, the switch is ON and Port 1A is connected to Port 1B. When OE2 is LOW, Port 2A is connected to Port 2B. When OEX is HIGH, a high impedance state exists between the A and B ports. The FST162861 has an equivalent 25 series resistors to reduce signal-reflection noise, eliminating the need for external terminating resistors. s 25 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. Ordering Code: Order Number Package Number Package Description FST162861MTD Note 1 MTD48 48-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 6.1mm Wide FST162861MTDX_NL Note 2 MTD48 Pb-Free 48-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 6.1mm Wide Note 1 Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Note 2 “_NL” indicates Pb-Free product per JEDEC J-STD-020B . Device is available in Tape and Reel only. 2005 Fairchild Semiconductor Corporation DS500319 FST162861 Logic Diagram Connection Diagram Truth Table Inputs Inputs/Outputs 1A, 1B 2A, 2B 1A 1B 1A 1B 2A 2B Z 2A 2B Z Pin Descriptions Pin Name OE1, OE2 1A, 2A 1B, 2B Bus Switch Enables Bus A Bus B FST162861 Absolute Maximum Ratings Note 3 Supply Voltage VCC DC Switch Voltage VS Note 4 DC Input Voltage VIN Note 5 DC Input Diode Current lIK VIN 0V DC Output IOUT Current DC VCC/GND Current ICC/IGND Storage Temperature Range TSTG 128mA r100mA to qC Recommended Operating Conditions Note 6 Power Supply Operating VCC Input Voltage VIN Output Voltage VOUT Input Rise and Fall Time tr, tf Switch Control Input 4.0V to 5.5V 0V to 5.5V 0V to 5.5V 0nS/V to 5nS/V Switch I/O 0nS/V to DC Free Air Operating Temperature TA -40 qC to qC Note 3 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 rating. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Note 4 VS is the voltage observed/applied at either the A or B Port across the switch. Note 5 The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. Note 6 Unused control inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Parameter VCC V TA qC to qC Units Note 7 Conditions |
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