National Semiconductor Manuals - Page 29

National Semiconductor manuals, page 29

• National Semiconductor 54191/DM54191/DM74191 handbook

  This is a synchronous reversible up-down counter with mode control. It is a 4-bit binary counter. Synchronous operation is achieved by clocking all flip-flops simultaneously, so that the outputs change simultaneously when instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple clock) counters. The outputs of the flip-flops are triggered on a low-to-high level transition of the clock input, if the enable input is low. A high enable input inhibits counting. Level changes at either the enable input or the down-up input should only be made when the clock input is high. The direction of the count is determined by the level of the down-up input. When low, the counter counts up, and when high, it counts down. This counter is fully programmable, meaning the outputs can be preset to any level by placing a low on the load input and entering the desired data at the data inputs. The output will change independent of the level of the clock input. This feature allows the counters to be used as modulo-N dividers by modifying the count length with the preset inputs. The clock, down-up, and load inputs are buffered to lower the drive requirement, which significantly reduces the drive requirement.

• National Semiconductor DM74184/DM74185A handbook

  This document describes the TLF6561 DM74184 and DM74185A BCD-to-Binary and Binary-to-BCD Converters. These converters allow direct read-out of converted codes and demonstrate the versatility of read-only memory. The converters can be cascaded, have an overriding enable input, and open-collector outputs.

• National Semiconductor DM5417/DM7417 Hex Buffers with High Voltage Open-Collector Outputs handbook

  DM5417/DM7417 is a six-channel buffer that can implement buffer function for each gate. These open-collector outputs need external pull-up resistors for proper logical operation.

• National Semiconductor 54174/DM54174/DM74174 54175/DM54175/DM74175 Hex/Quad D Flip-Flops with Clear handbook

  The TL�F�6557 54174�DM54174�DM74174� 54175�DM54175�DM74175 Hex�Quad D Flip-Flops with Clear is a positive-edge triggered flip-flops that utilize TTL circuitry to implement D-type flip-flop logic.

• National Semiconductor 54173/DM54173/DM74173 TRI-STATEÉ Quad D Registers handbook

  the 54173~dm54173~dm74173 series of four-bit tri-state registers have three-state outputs that can drive high-impedance loads and low-impedance loads without the need for interface or pull-up components to drive the bus lines in a bus-organized system

• National Semiconductor 54165/DM74165 8-Bit Parallel-to-Serial Converter handbook

  This document describes the features and characteristics of the TL�F�9782 54165�DM74165 8-bit parallel-to-serial converter, which has asynchronous parallel loading and serial input register capabilities.

• National Semiconductor DM54161/DM74161/DM74163 Synchronous 4-Bit Counters handbook

  DM54161, DM74161 and DM74163 are synchronous programmable 4-bit counters with internal carry look-ahead for applications in high-speed counting designs.

• National Semiconductor 54157/DM54157/DM74157 Quad 2-Line to 1-Line Data Selectors/Multiplexers handbook

  54157 is a dual 2-line to 1-line data selector/multiplexer produced by National Semiconductor Corporation

• National Semiconductor DM5406/DM7406 Hex Inverting Buffers with High Voltage Open-Collector Outputs handbook

  This datasheet describes the features and characteristics of the DM5406 and DM7406 hex inverting buffers.

• National Semiconductor DM5405/DM7405 Hex Inverters with Open-Collector Outputs handbook

  This document describes TL�F�6495 DM5405�DM7405 Hex Inverters with Open-Collector Outputs. The open-collector outputs require external pull-up resistors for proper logical operation.

• National Semiconductor 5404/DM5404/DM7404 Hex Inverting Gates handbook

  This document describes the features and functions of the TL F6494 5404 DM5404 DM7404 six independent inverting gates.

• National Semiconductor DM5403/DM7403 Quad 2-Input NAND Gates with Open-Collector Outputs handbook

  This document describes four independent gate circuits of DM5403 and DM7403 models, each of which performs the logic NAND function. The device has open-collector outputs, which require external pull-up resistors for proper logical operation.

• National semiconductor 5402/DM5402/DM7402 Quad 2-Input NOR Gates handbook

  This is a document about TL6492 5402 DM5402 DM7402 Quad 2-Input NOR Gates. This device contains four independent gates, each of which performs the logic NOR function.

• National semiconductor DM5401/DM7401 Quad 2-Input NAND Gates with Open-Collector Outputs handbook

  DM5401 and DM7401 are dual-input Nand gates with open-collector outputs.

• National semiconductor 5400/DM5400/DM7400 Quad 2-Input NAND Gates handbook

  This document describes the features and characteristics of TL�F�6613 5400�DM5400�DM7400 Quad 2-Input NAND Gates.

National Semiconductor manuals by category