74AC899QCQB NSC [National Semiconductor], 74AC899QCQB Datasheet
74AC899QCQB
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74AC899QCQB Summary of contents
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Latchable Transceiver with Parity Generator Checker General Description The ’AC ’ACT899 is a 9-bit to 9-bit parity transceiver with transparent latches The device can operate as a feed- through transceiver or it can generate check parity ...
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Pin Names Description A –A A Bus Data Inputs Data Outputs –B B Bus Data Inputs Data Outputs 0 7 APAR BPAR A and B Bus Parity Inputs ODD EVEN ODD EVEN Parity Select Active LOW for ...
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Functional Block Diagram AC Path A APAR B BPAR BPAR A APAR FIGURE 10637– 10637 – 4 ...
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AC Path (Continued) A BPAR n (B APAR ERRA n (B ERRB ERRA O E ERRB FIGURE 2 FIGURE 3 FIGURE 10637 – 10637 – ...
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AC Path (Continued BPAR (O E APAR) APAR ERRA (BPAR ERRB FIGURE 5 FIGURE 6 FIGURE 10637– 10637– 10637– 10 ...
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AC Path (Continued SEL BPAR (SEL APAR) LEA BPAR (LEB APAR FIGURE 8 FIGURE 9 FIGURE 10637 – 10637 – 10637 ...
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AC Path (Continued) TS(H) TH(H) LEA APAR (LEB BPAR TS(L) TH(L) LEA APAR (LEB BPAR FIGURE 11 FIGURE 12 FIGURE 10637– 14 ...
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Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage ( Input Diode Current ( ...
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DC Electrical Characteristics for ’AC Family Devices V CC Symbol Parameter (V) I Minimum Dynamic 5 5 OLD Output Current OHD I Maximum Quiescent Supply Current I Maximum TRI-STATE OZ Leakage Current 5 5 ...
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AC Electrical Characteristics Symbol Parameter t Propagation Delay PLH PHL Propagation Delay PLH t APAR BPAR to BPAR APAR PHL t Propagation Delay PLH BPAR ...
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AC Operating Requirements Symbol Parameter t Setup Time HIGH or LOW PAR to LEA LEB Hold Time HIGH or LOW PAR to LEA LEB Pulse Width for LEA ...
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AC Operating Requirements Symbol Parameter t Setup Time HIGH or LOW PAR to LEA LEB Hold Time HIGH or LOW PAR to LEA LEB Pulse Width for LEB ...
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Physical Dimensions inches (millimeters) LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life ...