ISA-bus chip set supplies 62 8-bit ports.

A mother/daughter chip set for systems based on the ISA bus provides fully buffered 8-bit parallel I/O for any address between decimal 514 and 575 (hex 202 to 23F). The 16-bit-wide mother/daughter bus remains inactive until a read or write operation between addresses 514 and 575 is executed. The M100 and D100 come in 68-pin PLCCs, and each costs $35. Technical Development Co, Old Bethpage, NY. (516) 694-3205.

IC serves as OC-12 SONET/SDH/ATM interface.

Joining the SuperCom family of products for OC-12 (622.08-Mbps) applications, the SY69612 transceiver performs the serial-to-parallel and parallel-to-serial conversions required for interfacing lower speed user-network-interface chips with SONET-, SDH-, and ATM-based networks. On-chip clock generation is handled by a low-jitter PLL, which allows the use of a 51.84- or 77.76-MHz reference clock. The SY69612 comes in a thermally enhanced 14×20-mm, 100-pin QFP and costs $45 (1000). Synergy Semiconductor, Santa Clara, CA. (408) 730-1313.

PCI-compliant logic device fixes timing at 7.5 nsec.

The MACH221-7, a 96-macrocell device, guarantees a fixed timing of 7.5 nsec, allowing the device to run at frequencies up to 95 MHz. A programmable low-power mode lets speed-critical signal paths run at maximum frequency, and the remaining paths operate in the low-power mode. The feature results in a power saving of up to 50%. The MACH221-7 is fully compliant with the PCI local-bus specification and operates over the industrial-temperature range of -40 to +85°C. Other speed options include 10, 12, 15, and 20 nsec. The part costs $26 (1000). Advanced Micro Devices Inc, Sunnyvale, Ca. (408) 737-2400.

Switched Ethernet controller supplies eight ports.

Using a store-and-forward technique, the GT-48001 switched Ethernet controller attains a forwarding rate of 650,000 unicast packets/sec. The device is based on the GalNet switching architecture and houses a PCI-bus controller, a GalNet protocol controller, eight Ethernet 10/20-Mbps media-access controllers, a frame controller, a switching engine, a DRAM controller, and several management functions in a 208-pin PQFP. You can configure a switched Ethernet system with up to 32 GT-48001 controllers for a total of 256 10/20-Mbps ports. This configuration guarantees filtering and forwarding at full wire speed in full-duplex mode in all ports. The GT-48001 costs $96, or $12 per port. Galileo Technology Inc, San Jose, CA. (408) 451-1400.

MIC amps meet wireless standards.

Meeting global wireless standards, including Personal Handy- phone system (PHS) and personal digital cellular, Mitsubishi's microwave-IC (MIC) amps serve in mobile-communication handsets, base-station amps, wireless LANs, and satellite communication systems. The MA1048 targets PHS base-station applications. The device is a three-stage amp module operating at a drain voltage of 5.8V. Specifications for the MA1048 include output power of 1.0W, a gain >30 dB, and an adjacent-channel power rating of -58 dBc at 600-kHz deviation. The MA1048 costs $147 (10). Mitsubishi Electronics America Inc, Sunnyvale, CA. (408) 730-5900.

Step-up converter uses only 120-µA quiescent current.

The LT1304 offers an 85% efficiency to boost battery life in two-, three-, and four-cell input applications. The step-up dc/dc converter draws only 120 µA of quiescent current and operates at input voltages as low as 1.65V. An internal bipolar switch yields output power of up to 200 µA at 5V from a depleted two-cell input. The LT1304 includes a low-battery-detection comparator that stays active when the device is in shutdown mode to continually report battery status. The converter costs $2.45 (1000) and comes in an eight-lead, surface-mount package. Linear Technology Corp, Milpitas, CA. (408) 432-1900.

SPI EEPROMs transfer data at 2 MHz.

Equipped with a four-wire serial peripheral interface (SPI) for working with Motorola-s 6800 family of 8-bit microcontrollers, the AT25XX family of EEPROMs offers transfer rates of 2 MHz and operates from supplies ranging from 5.5 to as low as 1.8V. The AT25010, AT25020, and AT25040 are organized as 128×8, 256×8, and 512×8 bits, respectively. Each of the SPI devices guarantees a typical endurance of 1 million cycles and offers hardware and software protection. Packaging options include eight-pin plastic DIP and SOIC configurations. DIP pricing starts at $0.50, $0.70, and $0.85 for the AT25010, AT25020, and AT25040, respectively (10,000). Atmel Corp, San Jose, CA. (408) 441-0311.

Serial EEPROMs provide programming protection.

The 16-kbit X24165 and the 32-kbit X24325 two-wire serial-interface EEPROMs use a block-lock protection scheme, which lets you partition the devices with 25, 50, or 100% write protection. The programmable write-protect pin lets you solder the device into a system and then permanently lock down portions of the memory array using a software key after the final system configuration is defined. Once locked, the protected portion of memory cannot be overwritten, as long as the write-protect pin is soldered to ground. You can wire up to eight devices together on a common bus. Offered in 8-pin mini DIP and SOIC versions, the X24165 and X24325 cost $1.75 (10,000) and $2.50 (10,000), respectively. Xicor Inc, Milpitas, CA. (408) 432-8888.

Dual line driver proves a power miser.

The CLC418 current-feedback op amp drives low-impedance cables and high-capacitive loads and maintains signal fidelity. Each of the CLC418's dual amps operates from ±5V supplies, guarantees a continuous 96-mA output current, and dissipates 15-mW quiescent power. The CLC418 has a 130-MHz small-signal bandwidth, a slew rate of 350V/µsec, and rise and fall times of 4.6 nsec for a 2V step. The part comes in eight-pin plastic DIPs and SOICs and costs $2.65 (1000). Comlinear Corp, Fort Collins, CO. (800) 272-9959.

12-bit ADC takes as many as 1.5M-samples/sec.

Low power consumption and operation from a single 5V supply make the CLC945 and CLC946 12-bit ADCs suitable for battery-powered, portable designs. The CLC945 operates at conversion rates to 1M sample/sec with a maximum power dissipation of only 75 mW. The CLC946 samples at 1.5M samples/sec with 220 mW of power. Standby mode cuts dissipation to 100 µW for the CLC945 and 250 µW for the CLC946. The devices operate over the specified industrial temperature range of -40° to +85°C and come in 44-pin PLCCs. The converters cost $26.55 (1000). Comlinear Corp, Fort Collins, CO. (800) 272-9959.

AGC IF amplifier cuts wide dynamic range.

Operating at frequencies from 70 to 250 MHz, an IF amplifier with adjustable gain control (AGC) amplifies and attenuates a wide range of signals for code-division multiple-access (CDMA) radio, cellular, personal-communications services, and spread-spectrum applications. The 5V GaAs device, designated the KGF2441, offers a dynamic gain and attenuation range of >90 dB with an IP3 of -4.5 and a noise figure of <8 dB. Input impedance is 1000V, and output impedance is 250V. The part comes in an eight-pin SO package and costs $4.45 (>1000). Oki Semiconductor, Sunnyvale, CA. (800) 654-6388.

FET-input op amps operate at 8-MHz bandwidth.

Free from the phase inversion and overload problems often found in FET-input op amps, the 8-MHz OPA132 series has input-cascode circuitry offering common-mode rejection and a constant 50-pA maximum input bias current over the ±2.5 to ±18V supply range. The devices, which come in single, dual, and quad versions, have a slew rate of 20V/µsec, a maximum offset voltage of 500 µV, an open-loop gain of 130 dB, and a noise specification of 8 nV/({square root] Hz). Distortion is only 0.00008% at 1 kHz. Packaging options include eight-pin DIP and SO-8 configurations. Prices start at $1.33 (single), $2.26 (dual), and $4.26 (quad) (1000). Burr-Brown Corp, Tucson, AZ. (520) 746-1111.

Wireless ICs meld modulator and mixer on one chip.

Intended for personal-communications services (PCS) and wireless communications, three vector modulator and mixer circuits cover a frequency range to 2.5 GHz. The PMB2201, PMB2202, and PMB-2207 operate from 2.7 to 5.5V and come in plastic TSOPs. Each IC includes a direct quadrature modulator and a double-balanced Gilbert cell mixer on the same chip. The modulators and mixers have their own power supply and ground pins, so you can power them down separately. All three devices cost $4.46 each (10,000). Siemens Components Inc, Integrated Circuits Division, Cupertino, CA. (408) 777-4500.

3V RF chip set spans 1.5 to 2.5 GHz.

A three-chip set provides nearly all of the active RF functions needed for US and European wireless applications in the 1.5- to 2.5-GHz frequency range. All of the ICs operate from 3V supplies. The HPMX-5001 is an up/down-converter that incorporates a half-rate VCO with a 32/33 dual-modulus prescaler. The HPMX-5002 IF modulator/demodulator includes a VCO, prescalers, a phase-frequency detector, a down-converter (to a second IF), a limiting amp chain, a data slicer, and RSSI circuitry. The HPMX-3003 GaAs IC combines a low-noise amp, a transmit/receive switch, and a power amp. Respective prices for the 5001, 5002, and 3003 are $5.35, $8.90, and $7.20 (10,000). Hewlett-Packard, Santa Clara, CA. (800) 452-4844, ext 1496.

PLL-frequency synthesizer family grows.

Four devices join Motorola-s family of PLL-frequency synthesizers, which come in small-outline, gull-wing packages. The MC145170-1 is a single-chip dc-to-185-MHz synthesizer for use in the MF, HF, and VHF bands. Rated as high as 130 MHz, the MC145173 includes a 6-bit ADC and a 22-stage frequency counter. The MC145220 dual PLL operates from 40 MHz to 1.1 GHz and contains two on-chip dual-modulus prescalers. A low-voltage 2.0-GHz synthesizer, the MC145202 includes a 64/65 prescaler and draws only 4.0 mA. Respective prices for the MC145170-1, 145173, 145220, and 145202 are $1.65, $2.04, $2.44, and $4.18 (5000). Motorola Microcontroller Technologies Group, Austin, TX. (512) 933-8631

18-line SCSI terminator keeps line capacitance low.

A 2-pF capacitance lets the REG5608 18-line active terminator meet the requirements of high-speed SCSI systems, such as Fast-20. The device disconnects terminations from the bus with a single logic-control line, leaving output lines at a high impedance with or without power applied. Maximum current during assertion is 22.4 mA/line. The device provides a current-sinking capability of 325 mA for active negation and comes with on-chip, 110V termination resistors. Prices for the REG5608 start at $3.91 (1000), and the device comes in 28-lead SOIC and fine-pitch SSOP versions. Burr-Brown Corp, Tucson, AZ. (520) 746-1111.

Disk controller targets NOR flash memory.

Using extensive on-chip hardware to automate data transfer, the 36C3951 controller IC for NOR flash memories minimizes µP supervision and power consumption. The flash-disk controller supports 8-, 16-, and 32-Mbit flash memories for a total unformatted drive capacity of as much as 40 Mbytes. Optimized for Intel-s FlashFile memory, the 36C3951 is compatible with PCMCIA ATbus attachment (ATA) and standard bootable ATA/IDE-host interfaces. The controller costs <$30 (1000). Silicon Systems, Tustin, CA. (714) 573-6200.

Processor doubles recording time in telephone-answering devices.

The MSP58C83X, a TMS320-based processor for digital-telephone-answering devices (DTADs), doubles message-recording time to 28 minutes with 4 Mbytes of memory using a mixed-excitation, linear-prediction voice-compression algorithm. The DTAD processor connects directly to either NAND flash memory or audio RAM. Software modules add full-duplex speakerphone, caller ID, and caller-ID-on-call-waiting capabilities. A second DTAD processor, the MSP58C81X, provides 14 minutes of record time with 4 Mbytes of memory. Both devices come in 100-pin QFPs. Prices start at $6.85 for the MSP58C83X (100,000) and $6.35 for the MSP58C81X (100,000). Texas Instruments Inc, Denver, CO. (800) 477-8924, ext 4500.

Digital wave-table IC juggles eight serial-output channels.

Operating at output sampling rates as high as 50 kHz, the Z89340 programmable wave-table engine is intended for 8- and 16-bit linear PCM recording and playback, wave-table synthesis, and adaptive-differential-PCM, real-time decompression. The chip has an eight-channel, 20-bit linear PCM audio generator and accommodates 16-, 18-, and 20-bit serial DACs with a dynamic range of >96 dB. The device also employs eight 24-bit audio accumulators with clipping circuitry and a jumperless, configurable ISA-bus interface. The Z89340 costs $20 (20,000). Zilog, Campbell, CA. (408) 370-8000.

IF transceiver for wireless systems takes 3V supply.

The AD6432, a monolithic transceiver that needs only one power-supply voltage of 2.7 to 5.5V, replaces a dozen or more discrete components in digital wireless systems. The receive section accepts input signals as high as 300 MHz and down-converts to a user-selected IF between 10 and 30 MHz. It also provides I and Q output signals with as much as 8-MHz bandwidth. The transmit section includes I/Q modulators and a summing amplifier, accepting modulation bandwidths to 1 MHz and modulating a carrier frequency to 300 MHz. Output level is nominally -15 dB. Housed in a 44-pin TQFP, the AD6432 costs $7.25 (10,000). Analog Devices Inc, Wilmington, MA. (617) 937-1428.

Low-voltage prescalers dissipate 2.7 mW.

Intended for a variety of PLL applications, the MC120XX family of prescalers dissipates from 2.7 to 8.1 mW at supply voltages of 2.7 to 5.5V. The devices come in single- and dual-modulus versions specified for 1.1, 2.0, or 2.5 GHz. Packaging options include eight-lead SOIC and SSOP configurations. Prices range from $2.89 to $5.68 (1000). Motorola Semiconductor Products Sector, Phoenix, AZ. (602) 244-6108.

Flash-based voice chip records 20 minutes of audio.

Using a data-compression algorithm embedded in a 2-kbyte ROM, the VoiceChip voice-recorder IC stores approximately 20 minutes of audio data in 1 Mbyte of external NOR or NAND flash memory. The device-s on-chip 8051 8-bit controller manages the integrated data-compression engine and other functional units. The VoiceChip has an external bus to access a flash-memory array. Prices start at $10 (OEM). EUROM FlashWare Solutions Inc, Santa Clara, CA. (408) 748-9995

5V chip eyes data stream for errors.

A 64-bit error- detection and -correction (EDC) device for 5V systems with large memory arrays, such as file servers and high-end PCs, detects errors in 10 nsec and corrects them in 15 nsec. The IDT49C466A-s Flow-thruEDC architecture uses two bidirectional data buses and permits fast transparent data flow between the processor and main memory. The EDC chip improves system performance and reliability by a factor of 2000 or more. Housed in a 208-pin PQFP, the IDT49C466A costs $75 (1000). Integrated Device Technology Inc, Santa Clara, CA. (800) 345-7015.

5V temperature switch offers programmable setpoint.

The TC622 solid-state temperature switch has an ambient temperature range of -40 to +85°C with a user-programmable temperature setpoint and a power-supply range from 4.5 to 18V. Offered in space-saving eight-pin DIP and SOIC configurations, the TC622 re-places mechanical switches in temperature-sensing and -control applications by integrating the temperature sensor, voltage reference, and required circuitry to form a stand-alone unit. The part costs $0.59 (10,000). Telcom Semiconductor Inc, Mountain View, CA. (415) 968-9241.

USB transceiver IC cuts development costs and time.

The PDIUSBP11 Universal Serial Bus (USB) transceiver works with any peripheral or host device, converting it into a USB-compliant peripheral. The IC connects directly to a serial interface engine (SIE), eliminating the need to make custom USB I/O cells. The SIE, a design specification distributed free to members of the Implementers Forum, is easily integrated into any ASIC. Housed in a 14-pin SO package, the PDIUSBP11 costs $0.35 (10,000). Philips Semiconductors, Sunnyvale, CA. (408) 991-2000.