Micrel Manuals

The MIC10939/10942/10943 is a dot matrix display controller produced by Micrel. It can drive various types of displays and offers high versatility and flexibility.

The MIC10937 is a MOS/LSI general purpose display controller designed to drive segmented displays with 14 or 16 segments. It supports displays with up to 16 characters and provides internal ASCII character set decoding. The MIC10937 can directly drive displays that operate on 20mA of drive current up to 50V and is compatible with vacuum fluorescent or LED displays.

The KS8995XA is a highly integrated Layer-2 quality of service (QoS) switch with optimized bill of materials (BOM) cost for low port count, cost-sensitive 10/100Mbps switch systems. It also provides an extensive feature set including three different QoS priority schemes, a dual MII interface for BOM cost reduction, rate limiting to offload CPU tasks, software and hardware power-down, a MDC/MDIO control interface and port mirroring/monitoring to effectively address both current and emerging Fast Ethernet applications. The KS8995XA contains five 10/100 transceivers with patented mixed-signal low-power technology, five media access control (MAC) units, a high-speed non-blocking switch fabric, a dedicated address lookup engine, and an on-chip frame buffer memory. All PHY units support 10BASE-T and 100BASE-TX. In addition, two of the PHY units support 100BaseFX (Ports 4 and 5).

KSZ8842-16/32 MQL/MVL/MVLI 2-Port Ethernet Switch with Non-PCI Interface Data Sheet is the datasheet of the KSZ8842M series of non-PCI CPU interface chips. This chip is the industry's first fully managed, 2-port switch with a non-PCI CPU interface. It is based on a proven, fourth generation, integrated Layer-2 switch, compliant with IEEE 802.3u standards.

The SY10/100ELT20V is a single TTL-to-differential PECL translator. It features 3.3V and 5V power supply options, 300ps typical propagation delay, low power consumption, differential PECL output, and PNP TTL input. The ELT20V is ideal for applications that require the translation of a clock or data signal where minimal space, low power, and low cost are critical.

The KSZ8862-16MQL is a 2-port Ethernet switch that supports a non-PCI CPU interface and 10B-FL/100B-SX/100B-FX support, based on a proven, fourth-generation, integrated Layer 2 switch that is compliant with the IEEE 802.3u standard.

The KSZ8893FQL is a single-chip 3-port Fast Ethernet switch that supports fiber. It provides two 10/100 transceivers with patented mixed-signal low-power technology, three media access control (MAC) units, a high-speed non-blocking switch fabric, a Layer-2 managed switch and TS-1000 OAM (Operations, Administration and Management) V2 in a compact solution.

Micrel MIC5156/5157/5158 Super LDO™ Regulator Controller is a single IC solution for high-current low-dropout linear voltage regulation. Super LDO™ Regulators have the advantages of an external component count, programmable output voltage, and low static current.

The SY100S838/L is a low skew (÷1, ÷2/3) or (÷2, ÷4/6) clock generation chip designed explicitly for low skew clock generation applications. The internal dividers are synchronous to each other, therefore, the common output edges are all precisely aligned. The devices can be driven by either a differential or single-ended ECL or, if positive power supplies are used, PECL input signal. In addition, by using the VBB output, a sinusoidal source can be AC- coupled into the device. If a single-ended input is to be used, the VBB output should be connected to the CLK input and bypassed to ground via a 0.01µF capacitor. The VBB output is designed to act as the switching reference for the input of the SY100S838/L under single- ended input conditions. As a result, this pin can only source/sink up to 0.5mA of current. The Function Select (FSEL) input is used to determine what clock generation chip function is. When FSEL input is LOW, SY100S838/L functions as a divide by 2 and by 4/6 clock generation chip. However, if FSEL input is HIGH, it functions as a divide by 1 and by 2/3 clock chip. The common enable (EN) is synchronous so that the internal dividers will only be enabled/disabled when the internal clock is already in the LOW state. This avoids any chance of generating a runt clock pulse on the internal clock when the device is enabled/disabled as can happen with an asynchronous control. An internal runt pulse could lead to losing synchronization between the internal divider stages.

The MIC2211 is a low dropout dual channel LDO from Micrel. It has two outputs with 150mA and 300mA respectively, with optional output voltages. The operating voltage range is 2.25V to 5.5V, and it uses low power ceramic output capacitors. The static current is only 48µA.

This document introduces the features of MIC5209, including low dropout voltage, low static current, reverse battery protection, current limiting, overtemperature shutdown, etc.

The MIC5206 is an efficient linear voltage regulator with very low dropout voltage (typically 17mV at light loads and 165mV at 150mA), and very low ground current (600µA at 100mA output), with better than 1% initial accuracy. It has a logic compatible enable/shutdown control input and an internal undervoltage monitor. Designed especially for hand-held, battery-powered devices, the MIC5206 can be switched by a CMOS or TTL compatible logic signal. When disabled, power consumption drops nearly to zero. Dropout ground current is minimized to prolong battery life. Key features include an undervoltage monitor with an error flag output, a reference bypass pin to improve its already low- noise performance (8-lead versions only), reversed-battery protection, current limiting, and overtemperature shutdown. The MIC5206 is available in several fixed voltages in a tiny SOT-23-5 package. It features a pinout, similar to the LP2980, but has significantly better performance. Fixed and adjustable output voltage versions, featuring the reference bypass option, are available in the 8-lead Micrel Mini 8™ 8-lead MSOP (micro small-outline package). For low-dropout regulators that are stable with ceramic output capacitors, see the µCap MIC5245/6/7 family.

The SY87700V is a complete Clock Recovery and Data Retiming integrated circuit for data rates from 32Mbps up to 175Mbps NRZ. The device is ideally suited for SONET/SDH/ATM applications and other high-speed data transmission systems. Clock recovery and data retiming is performed by synchronizing the on-chip VCO directly to the incoming data stream. The VCO center frequency is controlled by the reference clock frequency and the selected divide ratio. On-chip clock generation is performed through the use of a frequency multiplier PLL with a byte rate source as reference. The SY87700V also includes a link fault detection circuit.

The SY58024U is a 2.5V/3.3V precision, high-speed, fully differential dual CML crosspoint switch.

The MIC5203 is an 80mA linear voltage regulator with very low dropout voltage (typically 20mV at light loads and 300mV at 80mA) and very low ground current (225µA at 20mA output), offering better than 3% initial accuracy with a logic-compatible enable input. The µCap™ regulator design is optimized to work with low- value, low-cost ceramic capacitors. The outputs typically require only 0.47µF of output capacitance for stability. Designed especially for hand-held, battery-powered devices, the MIC5203 can be controlled by a CMOS or TTL compatible logic signal. When disabled, power consumption drops nearly to zero. If on-off control is not required, the enable pin may be tied to the input for 3-terminal operation. The ground current of the MIC5203 increases only slightly in dropout, further prolonging battery life. Key MIC5203 features include current limiting, overtemperature shutdown, and protection against reversed battery. The MIC5203 is available in 2.8V, 3.0V, 3.3V, 3.6V, 3.8V, 4.0V, 4.5V, 4.75V, and 5.0V fixed voltages. Other voltages are available; contact Micrel for details.