TEXAS Manuals (Industrial)

Introduces the UC28023 and UC28025, two fixed frequency PWM controllers optimized for high-frequency switched-mode power supply applications, including product features, application scenarios, and working principles

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The TL16C750 is a TL16C450-compatible asynchronous communications element with programmable 16- or 64-byte FIFOs and autoflow control

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TL16C554A, TL16C554AI Asynchronous-Communications Element SLLS509A-AUGUST 2001-REVISED JULY 2003 1 POST OFFICE BOX 655303•DALLAS, TEXAS 75265 �Integrated Asynchronous-Communications Element �Consists of Four Improved TL16C550C ACEs Plus Steering Logic �In FIFO Mode, Each ACE Transmitter and Receiver Is Buffered With 16-Byte FIFO to Reduce the Number of Interrupts to CPU �In TL16C450 Mode, Hold and Shift Registers Eliminate Need for Precise Synchronization Between the CPU and Serial Data �Up to 16-MHz Clock Rate for up to 1-Mbaud Operation �Programmable Baud-Rate Generators Which Allow Division of Any Input Reference Clock by 1 to (216–1) and Generate an Internal 16 × Clock �Adds or Deletes Standard Asynchronous Communication Bits (Start, Stop, and Parity) to or From the Serial-Data Stream �Independently Controlled Transmit, Receive, Line Status, and Data Set Interrupts �5-V and 3.3-V Operation �Fully Programmable Serial Interface Characteristics: – 5-, 6-, 7-, or 8-Bit Characters – Even-, Odd-, or No-Parity Bit – 1-, 1 1/2-, or 2-Stop Bit Generation – Baud Generation (DC to 1-Mbit Per Second) �False Start Bit Detection �Complete Status Reporting Capabilities �Line Break Generation and Detection �Internal Diagnostic Capabilities: – Loopback Controls for Communications Link Fault Isolation – Break, Parity, Overrun, Framing Error Simulation �Fully Prioritized Interrupt System Controls �Modem Control Functions (CTS, RTS, DSR, DTR, RI, and DCD) �3-State Outp

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TL16C554, TL16C554I ASYNCHRONOUS COMMUNICATIONS ELEMENT SLLS165D – JANUARY 1994 – REVISED JULY 1998

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The TL16C552A, TL16C552AM is a dual asynchronous communications element with FIFO function from Texas Instruments, which can operate at a clock rate of 16Mhz and support a transmission speed of 1Mbaud. The product has the following features: IBM PC/AT compatible, two TL16C550 ACEs, enhanced bidirectional printer port, 16-byte FIFO, reduced CPU interrupts, independently controlled transmit, receive, line status and data set interrupts for each channel, individual modem control signals for each channel, programmable serial interface characteristics for each channel, 5-, 6-, 7- or 8-bit characters, even, odd or no parity bit generation and detection, 1-, 1-1/2- or 2 stop bit generation, TTL drive for the I/O and control bus for each channel, hardware and software compatible with TL16C452

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The TL16C552 is an enhanced dual channel version of the popular TL16C550 asynchronous communications element (ACE). The device serves two serial input/output interfaces simultaneously in microcomputer or microprocessor-based systems.

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This document is a technical manual for the sllls597c product, which introduces the product's features and characteristics.

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TL16C550C/ TL16C550CI is an asynchronous communications element with autoflow control.

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TL16C550B, TL16C550BI Asynchronous Communications Element is capable of running with all existing TL16C450 software and after reset, all registers are identical to the TL16C450 register set.

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TL16C550A Asynchronous Communications Element is a FIFO-capable communication element that can run with all existing TL16C450 software.

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The TL16C450 is a CMOS version of an asynchronous communications element (ACE) that typically functions in a microcomputer system as a serial interface. It features a programmable baud rate generator, full double buffering, addition or deletion of standard asynchronous communication bits (start, stop, and parity), and an independent receiver clock input.

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The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented circuits are an undervoltage lockout (UVLO), featuring a start-up current of less than 1 mA, and a precision reference trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator (that also provides current-limit control), and a totem-pole output stage designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state. Major differences between members of these series are the UVLO thresholds and maximum duty-cycle ranges.

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TL16C2550 is a 2.5V to 5V dual universal asynchronous receiver/transmitter with 16-byte FIFOs. It features internal diagnostic capabilities, programmable auto-RTS and auto-CTS, and fully prioritized interrupt system controls. The product is suitable for point-of-sale terminals, gaming terminals, portable applications, router control, cellular data, and more.

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The TC245 786- × 488-PIXEL CCD IMAGE SENSOR is a high-resolution, solid-state image sensor designed for use in single-chip B/W NTSC TV applications. It has an 8-mm image-area diagonal and is compatible with 1/2-inch Vidicon optics. The sensor has 755 (H) x 242 (V) active elements in the image-sensing area, advanced on-chip signal processing, low dark current, electron-hole recombination antiblooming, dynamic range of more than 70 dB, high sensitivity, high photoresponse uniformity, high blue response, single-phase clocking, and solid-state reliability.

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The TL1593C is a three-channel sample-and-hold integrated circuit designed for use in processing video signals generated by TI virtual-phase CCD image sensors. It can be used with one-, two-, and three-channel color and monochrome TI virtual-phase CCDs. Each sample-and-hold channel consists of a differential-input buffer, a digitally controlled switch, and an output buffer that has high impedance. Separate supply and ground pins are provided for the analog and digital sections to ensure optimum isolation. Internal-hold capacitors are included to reduce the external parts count. The differential inputs allow the amplifier return pin of the imager to be connected to CIN of the sample-and-hold circuit to obtain common-mode rejection for antiblooming clock transients in the CCD. The analog inputs should be capacitively coupled from the CCD outputs to ensure optimum performance. The TL1593C is supplied in a 16-pin plastic package and is characterized for operation from 0°C to 70°C.

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The TC211 is a full-frame charge-coupled device (CCD) image sensor designed specifically for industrial applications requiring ruggedness and small size.

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The TL1591 is a monolithic integrated sample-and-hold circuit that uses the BiFET process with Schottky-barrier diodes and is designed for use with CCD area imagers. This device consists of an ultra-fast input-buffer amplifier, a digital-controlled diode-bridge switch, and a high-impedance output buffer amplifier. The electronic switch is controlled by an LS-TTL-compatible logic input.

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The TL1466I is a six-channel pulse-width-modulation (PWM) control circuit. This device contains reference voltage with a precision of ±2%, a triangle wave oscillator capable of high frequency oscillation up to 0.8 MHz, various protection circuitry and shutdown circuitry. The output regulation voltage for each channel is set by an external resistor divider. Moreover, the output stage is capable of driving a PNP power transistor with high speed. The high frequency/efficiency switching operation eliminates switching loss by using internal over-drive circuitry at the rising edge and with reverse bias connecting external bootstrap capacitor at the falling edge. The MOSFET can be used in parallel with the output diode at channel 1 and 4. This results in further high efficiency operation replacing the constant time with this MOSFET when the output diode is turned on. Furthermore, it operates 2.5 V supply voltage and also has short circuit protection, low power consumption, internal undervoltage lockout protection etc.

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