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74ABT899 Arkusz danych(PDF) 1 Page - Fairchild Semiconductor |
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74ABT899 Arkusz danych(HTML) 1 Page - Fairchild Semiconductor |
1 / 16 page November 1992 Revised January 1999 © 1999 Fairchild Semiconductor Corporation DS011509.prf www.fairchildsemi.com 74ABT899 9-Bit Latchable Transceiver with Parity Generator/Checker General Description The ABT899 is a 9-bit to 9-bit parity transceiver with trans- parent latches. The device can operate as a feed-through transceiver or it can generate/check parity from the 8-bit data busses in either direction. The ABT899 features independent latch enables for the A- to-B direction and the B-to-A direction, a select pin for ODD/EVEN parity, and separate error signal output pins for checking parity. Features s Latchable transceiver with output sink of 64 mA s Option to select generate parity and check or “feed-through” data/parity in directions A-to-B or B-to-A s Independent latch enables for A-to-B and B-to-A directions s Select pin for ODD/EVEN parity s ERRA and ERRB output pins for parity checking s Ability to simultaneously generate and check parity s May be used in systems applications in place of the 543 and 280 s May be used in system applications in place of the 657 and 373 (no need to change T/R to check parity) s Guaranteed output skew s Guaranteed multiple output switching specifications s Output switching specified for both 50 pF and 250 pF loads s Guaranteed simultaneous switching noise level and dynamic threshold performance s Guaranteed latchup protection s High impedance glitch free bus loading during entire power up and power down cycle s Nondestructive hot insertion capability s Disable time less than enable time to avoid bus contention Ordering Code: Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Connection Diagrams Pin Assignment for PLCC Pin Assignment for SOIC and SSOP Order Number Package Number Package Description 74ABT899CSC M28B 28-Lead Small Outline Integrated Circuit (SOIC), MS-013, 0.300” Wide Body 74ABT899CMSA MSA28 28-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide 74ABT899CQC V28A 28-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.450” Square |
Podobny numer części - 74ABT899 |
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Podobny opis - 74ABT899 |
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