National Semiconductor Manuals

LP2952/LP2952A/LP2953/LP2953A Adjustable Micropower Low-Dropout Voltage Regulators

The 'FCT541 is an octal buffer and line driver with TRI-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus-oriented transmitter/receiver. The 'FCT541 is similar to the 'FCT244 with broadside pinout.

MN54F189-X REV 1A0 is a 64-bit random access memory with 3-state outputs. The memory is organized as a 16-word by 4-bit array, address inputs are buffered to minimize loading and are fully decoded on-chip. Outputs are 3-state and are in the high impedance state whenever the Chip Select (CS) input is HIGH. Outputs are active only in the Read mode and the output data is the complement of the stored data.

This is a data sheet for MV54ACT257-X, which introduces the features of the product, including multiplexer expansion, non-inverting tri-state outputs, output source/sink 24 mA, etc.

This document is about the copyright information of ICminer.com's Electronic-Library Service. The service was launched in 2003 and provides electronic library services. The document does not mention specific product features and characteristics.

This datasheet details the features and characteristics of the 54ABT16373 16-bit transparent latch.

The LP3990 is a 150mA linear voltage regulator designed for portable, battery-powered systems providing an accurate output voltage, low noise, and low quiescent current. The LP3990 will provide a 0.8V output from the low input voltage of 2V at up to 150mA load current. When switched into shutdown mode via a logic signal at the enable pin, the power consumption is reduced to virtually zero. The LP3990 is designed to be stable with space saving ceramic capacitors as small as 0.47µF. Performance is specified for a -40˚C to 125˚C junction tem- perature range. For output voltages other than 0.8V, 1.35V, 1.5V, 1.8V, 2.5V, 2.8V, or 3.3V please contact your local NSC sales office.

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54122�DM74122 Retriggerable Resettable Multivibrator

The document is the CLC415 data sheet, which introduces the features and characteristics of the product, including 160MHz small signal bandwidth, 5mA static current, 70dB channel isolation, 0.03%/0.03° differential gain/phase, 12ns settling to 0.1%, 1500V/µs slew rate, 2.0ns rise and fall time (2Vpp), 70mA output current.

The ’F191 is a reversible modulo-16 binary counter featuring synchronous counting and asynchronous presetting. The preset feature allows the ’F191 to be used in programmable dividers. The Count Enable input, the Terminal Count output and Ripple Clock output make possible a variety of methods of implementing multistage counters. In the counting modes, state changes are initiated by the rising edge of the clock. The counter has a high-speed, 125 MHz typical count frequency, supports synchronous counting, asynchronous parallel load and cascading.

The DS16149-DS36149 and DS16179-DS36179 are Hex MOS drivers with outputs designed to drive large capacitive loads up to 500 pF associated with MOS memory systems. PNP input transistors are employed to reduce input currents allowing the large fan-out to these drivers needed in memory systems. The circuit has Schottky-clamped transistor logic for minimum propagation delay and a disable control that places the outputs in the logic ‘‘1’’ state. This is especially useful in MOS RAM applications where a set of address lines has to be in the logic ‘’1’’ state during refresh. The DS16149-DS36149 has a 15 X resistor in series with the outputs to dampen transients caused by the fast-switching output. The DS16179-DS36179 has a direct low impedance output for use with or without an external resistor.