Description
 The HA16148PS is an IC with a high-voltage power MOS FET and current-mode type PWM controller mounted in a DILP-8 (DP-8) standard package, suitable for low-power power supplies in the 10 W class and below.
 The HA16148PS includes an energy-saving mode for holding down power consumption when on standby (no load). When the energy-saving mode is entered, the operating frequency is reduced to 1/4 the normal frequency, reducing power consumption. A starter circuit is also provided on-chip, eliminating the need for the external start-up resistance needed with previous controller ICs. The starter circuit in this IC is turned off automatically after the IC starts up, enabling the start-up resistance power consumption to be decreased.

 The HA16148PS includes a soft start circuit, OVP circuit, and remote on/off circuit, making it possible to configure a simple protection circuit with fewer external parts than previously. Also provided are a current sense resistance and a leading edge blanking circuit that masks spike noise on current sense input, making noise reduction in a power supply set comparatively easy.
 The HA16148PS is equipped with an error amp circuit inverting input (FB) pin and output (COMP) pin, enabling special-purpose design for both flyback system secondary-side output voltage detection and primary-side back-up transformer output voltage detection types.

Features
·  Built-in high-voltage power MOS FET
·  Energy-saving mode (power saving through reduction of operating frequency to 1/4 normal frequency when on standby)
·  Built-in starter circuit, reducing power loss of start-up resistance when on standby (external start-up resistance not necessary)
·  Built-in soft start circuit, eliminating need for external connection
·  Remote on/off function, enabling power saving by halting PWM output without turning off power supply
·  Built-in current sense resistance and leading edge blanking circuit, for sense-resistance-less and noisecancellation- filter-less implementation
·  Built-in over voltage protection circuit
·  Built-in over temperature protection circuit

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Description
 This multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which can be used as an inhibit input. Also included is a clear input that when taken low resets the one shot. The HD74HC123A can be triggered on the positive transition of the clear while A is held low and B is held high.
 The HD74HC123A is retriggerable. That is it may be triggered repeatedly while their outputs are
generating a pulse and the pulse will be extended. Pulse width stability over a wide range of temperature. The output pulse equation is simply: tw = (Rext) (Cext).

Features
·  High Speed Operation
·  High Output Current: Fanout of 10 LSTTL Loads
·  Wide Operating Voltage: VCC = 2 to 6 V
·  Low Input Current: 1 µA max
·  Low Quiescent Supply Current

HD74HC123A
TAG Clear, dual

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Description
HA17555 Series are ICs designed for accurate time delays or oscillations. It provides both of trigger terminal and reset terminal in order to enable a wide scope of application including Mono Multi Vibrator and Astable Multi Vibrator, and the number of external components is fewer. Further, it’s compatible with NE555 of singnetics.

Features
·  Mono multi vibrator can be constructed with one resistor and one capacitor.
·  Astable multi vibrator can be constructed with two resistors and one capacitor.
·  Delay time can be established widely from several μ seconds to several hours.
·  Pulse Duty can be controlled.
·  The maximum value of both sink current and source current is 200mA.
·  Direct connection of output to TTL is possible.
·  Temperature/delay time ratio is 50 ppm/°C (typ).
·  Output is normally in the on and off states.

HA17555PS HA17555FP HA17555 HA17555F
TAG Timer

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Description
The HA17741/PS is an internal phase compensation high-performance operational amplifier, that is appropriate for use in a wide range of applications in the test and control fields.

Features
·  High voltage gain : 106 dB (Typ)
·  Wide output amplitude : ±13 V (Typ) (at RL ³ 2 kW)
·  Shorted output protection
·  Adjustable offset voltage
·  Internal phase compensation

Multivibrator
A multivibrator is a square wave generator that uses an RC circuit charge/discharge operation to generate the waveform. Multivibrators are widely used as the square wave source in such applications as power supplies and electronic switches. Multivibrators are classified into three types, astable multivibrators, which have no stable states, monostable multivibrators, which have one stable state, and bistable multivibrators, which have two stable states.

HA17741PS
TAG Amplifier

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Description
The Hitachi HM514400B/BL, HM514400C/CL are CMOS dynamic RAM organized 1,048,576-
word ´ 4-bit. HM514400B/BL, HM514400C/CL have realized higher density, higher performance
and various functions by employing 0.8 mm CMOS process technology and some new CMOS circuit design technologies. The HM514400B/BL, HM514400C/CL offer Fast Page Mode as a high speed access mode. Multiplexed address input permits the HM514400B/BL, HM514400C/CL to be packaged in standard 300-mil 26-pin plastic SOJ, standard 400-mil 20-pin plastic ZIP and 26- pin plastic TSOP II.

Features
• Single 5 V (±10%)
• High speed
  - Access time
       60 ns/70 ns/80 ns (max)
• Low power dissipation
  - Active mode
       605 mW/550 mW/495 mW (max)
  - Standby mode 11 mW (max)
0.55 mW (max) (L-version)
• Fast page mode capability
• 1024 refresh cycles : 16 ms
  1024 refresh cycles : 128 ms (L-version)
• 3 variations of refresh
  - RAS-only refresh
  - CAS-before-RAS refresh
  - Hidden refresh

HM514400BL HM514400C HM514400CL
TAG Memory

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