Datenblatt-Suchmaschine für elektronische Bauteile |
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74FR900SSC Datenblatt(PDF) 1 Page - Fairchild Semiconductor |
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74FR900SSC Datenblatt(HTML) 1 Page - Fairchild Semiconductor |
1 / 6 page © 1999 Fairchild Semiconductor Corporation DS010990 www.fairchildsemi.com May 1992 Revised August 1999 74FR900 9-Bit, 3-Port Latchable Datapath Multiplexer General Description The 74FR900 is a data bus multiplexer routing any of three 9-bit ports to any other one of the three ports. Readback of data latched from any port onto itself is also possible. The 74FR900 maintains separate control of all latch-enable, output enable and select inputs for maximum flexibility. PINV allows inversion of the data from the C8 to A8 or B8 path. This is useful for control of the parity bit in systems diagnostics. Fairchild’s 74FR25900 includes 25 Ω resistors in series with port A and B outputs. Resistors minimize undershoot and ringing which may damage or corrupt sensitive device inputs driven by these ports. Features s 9-bit data ports for systems carrying parity bits s Readback capability for system self checks. s Independent control lines for maximum flexibility s Guaranteed multiple output switching and 250 pF load delays s Outputs optimized for dynamic bus drive capability s PINV parity control facilitates system diagnostics s FR25900 resistor option for driving MOS inputs such as DRAM arrays Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol Pin Description Connection Diagram Order Number Package Number Package Description 74FR900SSC MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide Pin Names Description LExx Latch Enable Inputs OEx Output Enable Inputs PINV Parity Invert Input S0, S1 Select Inputs A0–A8 Port A Inputs or 3-STATE Outputs B0–B8 Port B Inputs or 3-STATE Outputs C0–C8 Port C Inputs or 3-STATE Outputs |
Ähnliche Teilenummer - 74FR900SSC |
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Ähnliche Beschreibung - 74FR900SSC |
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