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MM54C173N Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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MM54C173N Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 6 page  TLF5898 February 1988 MM54C173MM74C173 TRI-STATE Quad D Flip-Flop General Description The MM54C173MM74C173 TRI-STATE quad D flip-flop is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P-channel enhancement transis- tors The four D-type flip-flops operate synchronously from a common clock The TRI-STATE output allows the device to be used in bus-organized systems The outputs are placed in the TRI-STATE mode when either of the two output disable pins are in the logic ‘‘1’’ level The input disable allows the flip-flops to remain in their present states without disrupting the clock If either of the two input disables are taken to a logic ‘‘1’’ level the Q outputs are fed back to the inputs and in this manner the flip-flops do not change state Clearing is enabled by taking the input to a logic ‘’1’’ level Clocking occurs on the positive-going transition Features Y Supply voltage range 3V to 15V Y Tenth power TTL compatible Drive 2 LPTTL loads Y High noise immunity 045 VCC (typ) Y Low power Y Medium speed operation Y High impedance TRI-STATE Y Input disable without gating the clock Applications Y Automotive Y Data terminals Y Instrumentation Y Medical electronics Y Alarm systems Y Industrial electronics Y Remote metering Y Computers Connection Diagram Dual-In-Line Package TLF5898 – 2 Top View Order Number MM54C173 or MM74C173 Truth Table (Both Output Disables Low) tn tna1 Data Input Disable Data Output Input Logic ‘‘1’’ on One or Both Inputs X Qn Logic ‘‘0’’ on Both Inputs 1 1 Logic ‘‘0’’ on Both Inputs 0 0 TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation RRD-B30M105Printed in U S A |
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