Integrated Circuits: November 9, 1995

Ghost-cancellation preprocessor for consumer products. The M52661SP, used with Oren Semiconductor’s OR43100 filter chip and an 8- or 9-bit video A/D converter uses the FCC Ghost Cancellation Reference (GCR) signal for ghost cancellation. According to the company, you can adapt the device to all emerging NTSC (National TV Systems Committee) and PAL (phase-alternation-line) ghost-cancellation standards. The device comes in a 52-pin shrink DIP and costs $12 (10,000). Mitsubishi Electronics America Inc, Sunnyvale, CA. (408) 730-5900.

Transceiver IC implements four serial communications standards. The ML4670 supports RS-232C, RS-449, V.35, and X.21/V.36 communications interfaces. The device transfers data as fast as 10 Mbps, and you can program the device on the fly for any of the standards. Applications for the device include programmable communication interfaces in modems, multiplexers, bridges, routers, printers, computers, and network adapters. The device comes in an 84-pin PLCC and costs $17.10 (1000). Micro Linear Corp, San Jose, CA. (408) 433-5200.

IEEE 802.12-compliant 100VG-AnyLAN physical-layer chip. The PI2C5001 100 VG-AnyLAN transceiver circuit provides physical-media-device functions for four pair of category 3 or 5 unshielded-twisted-pair links. The device features adaptive equalization, digital PLLs, and 900-mW power dissipation. It comes in a 44-pin PLCC and costs $25 (1000). Production quantities are scheduled for the first quarter of 1996. Pericom Semiconductor Corp, San Jose, CA. (408) 435-0800.

Step-down switching regulator operates at a constant 500-kHz frequency. The LT1376 combines a 500-kHz constant frequency PWM with a 1.5A switch in an eight-lead SOIC. The device offers nearly 90% efficiency in dc/dc conversion. Its high switching frequency lets you use small inductors with values as low as 4.7 µH and filter the output with small capacitors. A logic-level-controlled shutdown mode reduces the supply current to 20 µA. Input voltage ranges from 6 to 25V. The LT1375, a version of the LT1376, offers a logic-level clock input for synchronizing the device at frequencies from 580 to 900 kHz for systems requiring specific noise spectrums. The device costs $3.65 (1000). Linear Technology Corp, Milpitas, CA. (408) 432-1900.

256-kbit SRAM has 8-nsec access time. The PDM-41256SA8 CMOS SRAM is available in 28-pin SOJ, 28-pin PDIP, and 24-pin SOJ packages. The device costs $15 (1000). Paradigm Technology Inc, San Jose, CA. (408) 954-0500.

1-Mbit synchronous SRAM has 6-nsec cycle time. The HM67S3632 is a 3.3V 32k×36-bit synchronous SRAM that supports clock speeds as high as 167 MHz. The device will be available in production quantities in the first quarter of 1996. It comes in a 119-bump ball-grid array and costs $85 (10,000). Hitachi America Ltd, Semiconductor and IC Division, Brisbane, CA. (800) 285-1601, ext 12.

Interface ICs for IR data transmission provide pulse shaping. The TOIM 3000 connects directly to a UART, and the TOIM 3232 connects directly to an RS-232C port and offers programmable baud rates from 50 Hz to 115 kHz. Both devices provide pulse-stretching and -shortening logic to comply with the Infrared Data Association standard. The device shortens transmit pulses to 3/16 of their original length or a fixed 1.6 µsec to reduce power consumption of IR devices. Pulses at the receive end are stretched back to their original length. Both devices come in 16-pin SOIC packages. The TOIM 3000 costs $1.75 (100,000), and the TOIM 3232 costs $2.50 (100,000). Temic, Santa Clara, CA. (408) 970-4020, ext 58.

PCI-system controller for R4600/R4650/R4700 CPUs. The GT-64010 single-chip PCI-system controller offers a 64-bit CPU interface, a DMA controller, a DRAM and devices controller, and a PCI interface. Its orthogonal architecture and decoupling of buses lets you simultaneously perform multiple operations. The device comes in a 256-pin PQFP and costs $49.95 (10,000). Galileo Technology Inc, San Jose, CA. (408) 451-1400.

System-controller and bridge chips enable hot-docking for Windows 95. The Vesuvius PT86C521/522/523 system controller and the Nile PT80C524 PCI-to-PCI bridge chips implement the company’s SmartDock technology for hot docking. The three-chip system controller supports 3.3V Pentium processors and other processors in its class with speeds as high as 150 MHz. The chip set connects the Pentium processor to the PCI local bus and provides a bridge between the PCI and ISA buses. The Nile chip provides an expansion bridge between two 32-bit PCI buses for docking. The Vesuvius chip set costs $45 (OEM), and the Nile chip costs $18 (OEM). PicoPower Technology, a Division of Cirrus Logic Inc, Fremont, CA. (510) 623-8300.

Current regulator features ultra-low-dropout voltage. The MIC5200 100-mA current regulator has 17-mV dropout for light loads and 200-mV dropout at 100 mA. Other key features include reverse-battery protection, current limiting, near zero current in shutdown mode, and overtemperature shutdown. The device is available in 3, 3.3, 4.85, and 5V models and costs $0.93 (100). Also available are the 200-mA MIC5201, which costs $1.10 (100), and the dual-100-mA MIC5202, which cost $1.95 (100). Micrel Semiconductor Inc, San Jose, CA. (408) 944-0800.

100BaseTX/FX repeater controller IC. The MX-98741, when coupled with a clock-recovery/generation chip and a transceiver chip, makes an eight-, 16-, or 24-port Class II 100BaseTX/FX repeater. Three media-independent-interface ports provide connections to management and bridge devices for connection to other repeaters of the same or different type. The device comes in a 208-pin PQFP and costs $65 (100). Macronix America Inc, San Jose, CA. (408) 453-8088.

High-side MOSFET driver shuts down to <1 mµA in off state. The MIC5018 operates from supply voltages from 2.7 to 9V and has a typical supply current of 160 mµA at 5V. The device has an internal charge pump that provides the gate voltage drive. An internal zener diode limits the gate-to-source voltage to a safe level for standard N-channel MOSFETs. The device comes in a four-lead SOT-143 package and costs $0.65 (100). Micrel Semiconductor Inc, San Jose, CA. (408) 944-0800.

100-MHz synchronous FIFO buffers come in a variety of sizes. The CY7C42X1 family of 9-bit-wide FIFO buffers is available in capacities of 64 to 8k words. The devices draw 50 mA. The CY7C42X5 family of 18-bit wide FIFO buffers is available in capacities of 64 to 4k words and draws 100 mA. Both devices have flags for empty, almost empty, half full, almost full, and full. You can program the almost-full and -empty flags, which provide synchronous outputs, avoiding problems with intermittent flags. Price of the devices start at $6.45 (1000). Cypress Semiconductor, San Jose, CA. (408) 943-2600.

Gigabit transceivers for three media. The FTR-8510 is a multimode fiber-optic transceiver. The FTR-1311 is a single-mode fiber-optic transceiver. They comply with the ANSI Fibre Channel standard. The transceivers include the open-fiber-control standard that FC specifies. Data-transmission rates range from 100 Mbps to 2 Gbps. The FTR-8510 costs $200 (OEM), the FTR-1311 costs $400 (OEM), and the 75V FCM-8510 coaxial transceiver costs $95 (OEM). Finisar Corp, Mountain View, CA. (415) 691-4000.

Power amplifier IC for ISM wireless communications. The 1.2W ITT334104BD power amplifier operates in the 898- to 942-MHz industrial, scientific, and medical (ISM) band. The device operates from a 5.8V source and has a two-stage, 27-dB power gain. Typical power-added efficiency is >55%. The device withstands 10-to-1 VSWR under clockwise conditions and is stable with any combination of battery voltage, load VSWR, and RF-drive signal. It comes in a 16-pin narrow-body SOIC and costs $10 (1000). ITT GTC, Roanoke, VA. (703) 563-8600.

18-line SCSI terminator in small package. The REG5601E SCSI terminator comes in a 28-lead, fine-pitch SSOP package. It is electrically equivalent to the industry-standard 5601 terminators but requires only half the pc-board area. The device provides an internally regulated 2.9V supply, 110V termination resistors, and switches to connect to the SCSI bus. You can disconnect all termination resistors from the bus with one logic command. The device costs $4.52 (5000). Burr-Brown Corp, Tucson, AZ. (602) 746-1111.

MPEG 2 transport-demultiplexer IC for set-top boxes. The VES2020 software-configurable transport demultiplexer processes digital video data for digital-satellite or digital-cable set-top boxes. The device comes with firmware and is available in a 160- or 208-pin MQFP package. Production quantities will be available early in 1996, and the United States price will be $40 (1000). VLSI Technology Inc, San Jose, CA. (408) 434-3000.