National Manuals

DS25BR204 is a 3.125 Gbps 1:4 LVDS repeater with transmit pre-emphasis and receive equalization.

The MM5452 is a monolithic integrated circuit utilizing CMOS metal gate, low threshold enhancement mode devices. It can drive up to 32 segments of LCD and can be paralleled to increase this number. The chip is capable of driving a 41⁄2-digit 7-segment display with minimal interface between the display and the data source. The MM5452 stores display data in latches after it is clocked in, and holds the data until new display data is received. Features include serial data input, no load signal required, DATA ENABLE (MM5452), wide power supply operation, TTL compatibility, 32 or 33 outputs, alphanumeric and bar graph capability, cascaded operation capability.

LM3421/LM3423 are versatile high voltage LED driver controllers, ideal for a wide range of applications.

The LP3990 regulator is designed to meet the requirements of 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 shut- down 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 1.0µF. Performance is specified for a -40°C to 125°C junction temperature range. For output voltages other than 0.8V, 1.2, 1.35V, 1.5V, 1.8V, 2.5V, 2.8V, or 3.3V please contact your local NSC sales office.

The LM7321/LM7322 is a high-performance operational amplifier with a wide operating voltage range, high output current, and the ability to drive unlimited capacitive loads. It offers an 18 V/µs slew rate and a 20 MHz unity gain bandwidth while requiring only 1 mA of supply current per op amp.

The DS90C363/DS90CF364 is a +3.3V programmable LVDS transmitter and receiver suitable for 18-bit flat panel display (FPD) link with a frequency support of 65 MHz. The transmitter converts 21 bits of CMOS/TTL data into three LVDS data streams and transmits a phase-locked transmit clock over a fourth LVDS link. The receiver converts the LVDS data streams back into 21 bits of CMOS/TTL data. At a transmit clock frequency of 65 MHz, 18 bits of RGB data and 3 bits of LCD timing and control data (FPLINE, FPFRAME, DRDY) are transmitted at a rate of 455 Mbps per LVDS data channel. With a 65 MHz clock, the data throughput is 170 MB/s. The transmitter features programmable edge data strobes for easy interface with various graphics controllers. The transmitter can be programmed for rising edge strobe or falling edge strobe through a dedicated pin. A rising edge transmitter can interoperate with a falling edge receiver (DS90CF364) without any translation logic. This chipset is an ideal solution to address EMI and cable size issues associated with wide, high-speed TTL interfaces.

LP38500/2-ADJ, LP38500A/2A-ADJ 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs

The LM4919 is a single-channel 85mW BTL output, 14mW stereo headphone audio amplifier. This device operates on a single 1.5V supply and provides 85mW of power in single-channel BTL mode with an 8-ohm load and 1% THD+N. In single-ended stereo headphone mode, the amplifier delivers 14mW per channel with a 16-ohm load and 1% THD+N. The LM4919 is packaged in the MM package, which provides low profile and small size, minimizing PCB area and maximizing output power. It features circuitry that reduces output transients (“clicks” and “pops”) during device turn-on and turn-off, an externally controlled, low-power consumption, active-low shutdown mode, and thermal shutdown. Boomer audio power amplifiers are designed specifically to use few external components and provide high quality output power in a surface mount package.

The LP3945 and LP3946 are complete charge management systems that safely charge and maintain a Li-Ion battery or a four-cell Ni-MH (LP3945 only) battery pack. The LP3945 offers the flexibility of programming charge current, battery regulation voltage (4.1V/4.2V), battery type (Li-Ion/Ni-MH), and End Of Charge (EOC) termination through the use of I2C interface. On the LP3946, these parameters are programmed at the factory per customer specification. The pass transistor, charge current sensing resistor and charge current setting resistors are all integrated inside the LP3945 and LP3946. This eliminates the use of external components and significantly reduces design time and board space. The LP3945 and LP3946 operate in four modes: pre-qualification, constant current, constant voltage and maintenance modes. The LP3945 features Ni-MH charging mode as well. The charger has under-voltage and over-voltage protection as well as an internal 5.6 hr timer to prevent overcharging the battery. There are two open drain outputs for status indication. An internal amplifier readily converts the charge current into a voltage. Also, the charger can operate in an LDO mode providing up to 1 Amp to the load.

The LM2751 is a 2X, 1.5X regulated switched capacitor white LED driver. It offers 4.5V and 5.0V regulated output voltage options and provides up to 150mA of output current in the 2.8V to 5.5V input voltage range, requiring only four low-cost ceramic capacitors. It provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or 2. The proper gain for maintaining regulation is chosen so that efficiency is maximized over the input voltage range. The LM2751 uses constant frequency pre-regulation to minimize conducted noise on the input and provide a predictable switching frequency. The switching frequency is programmable to 725kHz, 300kHz, 37kHz, or 9.5kHz. The LM2751 is available in a 10-pin Leadless Leadframe No-Pullback package: LLP-10.

The LM4872 is a 1-watt audio power amplifier in a micro SMD package. It is bridge-connected and capable of delivering 1 watt of continuous average power to an 8Ω load with less than 0.2% total harmonic distortion (THD) from a 5V power supply. The LM4872 is designed for low-power portable applications and does not require output coupling capacitors or bootstrap capacitors. It features an externally controlled low-power consumption shutdown mode and internal thermal shutdown protection mechanism.

LMH0346 3 Gbps HD/SD SDI Reclocker is a chip that can re-time digital video data. It conforms to the SMPTE 424M, SMPTE 292M, and SMPTE 259M (C) standards. The chip operates at data rates of 270 Mbps, 1.483 Gbps, 1.485 Gbps, 2.967 Gbps, and 2.97 Gbps. LMH0346 supports DVB-ASI operation at 270 Mbps. LMH0346 automatically detects the incoming data rate and adjusts itself to retime the incoming data to suppress accumulated jitter. LMH0346 also recovers the serial data-rate clock and optionally provides it as an output. LMH0346 has two differential serial data outputs, the second output can be selected as a low-jitter, data-rate clock output. Controls and indicators are: serial clock or second serial data output select, manual rate select input, SD/HD rate indicator output, lock detect output, auto/manual data bypass and output mute. The serial data inputs, outputs, and serial clock outputs are differential LVPECL compatible. The CML serial data and serial clock outputs are suitable for driving 100 Ω differentially terminated networks. The control logic inputs and outputs are LVCMOS compatible. LMH0346 is powered from a single 3.3V supply. Typical power dissipation is 370 mW. The device is available in two space–saving packages: a 6.5 X 4.4 mm 20-pin e-TSSOP and an even more space–efficient 5 X 4 mm 24-pin LLP package.

The ADC08100 is a low-power, 8-bit, monolithic analog-to- digital converter with an on-chip track-and-hold circuit. Optimized for low cost, low power, small size and ease of use, this product operates at conversion rates of 20 MSPS to 100 MSPS with outstanding dynamic performance over its full operating range while consuming just 1.3 mW per MHz of clock frequency. That’s just 130 mW of power at 100 MSPS. Raising the PD pin puts the ADC08100 into a Power Down mode where it consumes just 1 mW. The unique architecture achieves 7.4 Effective Bits with 41 MHz input frequency. The excellent DC and AC charac- teristics of this device, together with its low power consump- tion and single +3V supply operation, make it ideally suited for many imaging and communications applications, includ- ing use in portable equipment. Furthermore, the ADC08100 is resistant to latch-up and the outputs are short-circuit proof. The top and bottom of the ADC08100’s reference ladder are available for connections, enabling a wide range of input possibilities. The digital outputs are TTL/CMOS compatible with a separate output power supply pin to support interfac- ing with 3V or 2.5V logic. The digital inputs (CLK and PD) are TTL/CMOS compatible. The ADC08100 is offered in a 24-lead plastic package (TSSOP) and is specified over the industrial temperature range of −40˚C to +85˚C. An evaluation board is available to assist in evaluating device performance.