National Manuals (Others)

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DP83849C PHYTER® DUAL is a dual port 10/100 Mb/s Ethernet physical layer transceiver from National Semiconductor Corporation for commercial temperature applications

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The DP83847 is a full feature single Physical Layer device with integrated PMD sublayers to support both 10BASE-T and 100BASE-TX Ethernet protocols over Category 3 (10 Mb/s) or Category 5 unshielded twisted pair cables. The DP83847 is designed for easy implementation of 10/100 Mb/s Ethernet home or office solutions. It interfaces to Twisted Pair media via an external transformer. This device interfaces directly to MAC devices through the IEEE 802.3u standard Media Independent Interface (MII) ensuring interoperability between products from different vendors. The DP83847 utilizes on chip Digital Signal Processing (DSP) technology and digital Phase Lock Loops (PLLs) for robust performance under all operating conditions, enhanced noise immunity, and lower external component count when compared to analog solutions.

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the dp83848j phyter® mini ls commercial temperature single port 10/100 ethernet transceiver is a product of national semiconductor corporation. it is a low-power, high-performance 10/100 ethernet transceiver.

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The DP83848I is a robust fully featured 10/100 single port Physical Layer device offering low power consumption, including several intelligent power down states. These low power modes increase overall product reliability due to decreased power dissipation. Supporting multiple intelligent power modes allows the application to use the absolute minimum amount of power needed for operation. In addition to low power, the DP83848I is optimized for cable length performance far exceeding IEEE specifications. The DP83848I includes a 25MHz clock out. This means that the application can be designed with a minimum of external parts, which in turn results in the lowest possible total cost of the solution. The DP83848I easily interfaces to twisted pair media via an external transformer and fully supports JTAG IEEE specification 1149.1 for ease of manufacturing. Additionally both MII and RMII are supported ensuring ease and flexibility of design. The DP83848I features integrated sublayers to support both 10BASE-T and 100BASE-TX Ethernet protocols, which ensures compatibility and interoperability with all other standards based Ethernet solutions. The DP83848I is offered in a small form factor

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This document introduces the features of DP83849ID PHYTER® DUAL Industrial Temperature with Fiber Support (FX) Dual Port 10/100 Mb/s Ethernet Physical Layer Transceiver.

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The DP83848K PHYTER® Mini LS is an industrial temperature single port 10/100 Ethernet transceiver. It features low-power 3.3V, 0.18µm CMOS technology, auto-MDIX for 10/100 Mb/s, energy detection mode, RMII and MII interfaces, IEEE 802.3u auto-negotiation and parallel detection, etc.

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LM3433 is an adaptive constant on-time DC/DC buck constant current controller that provides a constant current for illuminating high power LEDs. The output configuration allows the anodes of multiple LEDs to be tied directly to the ground referenced chassis for maximum heat sink efficacy. The high frequency capable architecture allows the use of small external passive components and no output capacitor while maintaining low LED ripple current. Two control inputs are used to modulate LED brightness. An analog current control input is provided so the LM3433 can be adjusted to compensate for LED manufacturing variations and/or color temperature correction. The other input is a logic level PWM control of LED current. The PWM functions by shorting out the LED with a parallel switch allowing high PWM dimming frequencies. High frequency PWM dimming allows digital color temperature control, interference blanking, field sequential illumination, and brightness control. Additional features include thermal shutdown, VCC under-voltage lockout, and logic level shutdown mode. The LM3433 is available in a low profile LLP-24 package.

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The LM1881 Video sync separator extracts timing informa- tion including composite and vertical sync, burst/back porch timing, and odd/even field information from standard nega- tive going sync NTSC, PAL* and SECAM video signals with amplitude from 0.5V to 2V p-p. The integrated circuit is also capable of providing sync separation for non-standard, faster horizontal rate video signals. The vertical output is produced on the rising edge of the first serration in the vertical sync period. A default vertical output is produced after a time delay if the rising edge mentioned above does not occur within the externally set delay period, such as might be the case for a non-standard video signal.

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The LM5008 is a high voltage (100V) step-down switching regulator that features all of the functions needed to implement a low cost, efficient, Buck bias regulator. It is easy to implement and is provided in the MSOP-8 and the thermally enhanced LLP-8 packages. The regulator is based on a hysteretic control scheme using an ON time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The hysteretic control requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to Vout. This scheme ensures short circuit protection while providing min- imum foldback. Other protection features include: Thermal Shutdown, VCC under-voltage lockout, Gate drive under-volt- age lockout, and Max Duty Cycle limiter.

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The 'F240, 'F241, and 'F244 are octal buffers and line drivers designed to be employed as memory and address drivers, clock drivers, and bus-oriented transmitters/receivers, providing improved PC and board density.

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The DS90CF363 is a 3.3V LVDS transmitter that converts 21 bits of CMOS/TTL data into three LVDS data streams. It supports clock frequencies from 20 to 65 MHz and resolutions up to VGA, SVGA, XGA, etc. The narrow bus design reduces cable size and cost, while the low EMI LVDS devices ensure reliable transmission.

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The LM3224 is a step-up DC/DC converter from National Semiconductor with a 0.15Ω (typ.), 2.45A (typ.) internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM3224 is an ideal part for biasing TFT displays. With the high current switch it is also ideal for driving high current white LEDs for flash applica- tions.

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LM1246 is a 150MHz I2C compatible RGB preamplifier with internal 512 character OSD ROM, 512 character RAM and 4 DACs

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LMV861/LMV862 are CMOS input, low power op amp IC's, providing a low input bias current, a wide tem- perature range of −40°C to +125°C and exceptional perfor- mance making them robust general purpose parts.

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The DS10BR254 is a 1.5 Gbps 1:4 LVDS repeater optimized for high-speed signal routing and distribution over FR-4 print- ed circuit board backplanes and balanced cables.

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

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LM185-1.2/LM285-1.2/LM385-1.2 Micropower Voltage Reference Diodes

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The ADC122S655 is a dual 12-bit, 200 kSPS to 500 kSPS simultaneous sampling Analog-to-Digital (A/D) converter. It utilizes a successive-approximation register architecture to maintain the differential nature of the analog inputs throughout the conversion process, providing excellent common-mode signal rejection. The ADC122S655 features an external reference voltage that can be adjusted from 1.0V to VA. Its serial data output is in binary 2's complement format and compatible with various standards such as SPI™, QSPI™, MICROWIRE™, and common DSP serial interfaces. The ADC122S655 operates from a single 5V analog supply and consumes typically 11 mW of power at 500 kSPS. In power-down mode, the power consumption reduces to 3 µW. With its differential input, low power consumption, and compact size, the ADC122S655 is well-suited for direct connection to sensors in motor control applications. It is designed to operate reliably over the industrial temperature range of -40°C to +105°C and clock rates of 6.4 MHz to 16 MHz.

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