DS1045S-4

The DS1045S-4 is a synchronous, monolithic quad delay line designed to strengthen signal integrity and reduce glitches in high-speed parallel systems. This device is designed to accept four bits of synchronous data, convert them into eight differential outputs, and delay them by 0.25 to 13.75 nsec depending on the set-up time and the on-chip RC circuit. It is capable of speeds up to 20 MHz (5 nsec) with a maximum cycle time of 11 μsec. In addition, the output can be reset to either the low or the high state within 0.25 to 8.75 nsec, depending on the reset time of the circuitry.

The DS1045S-4 is part of a family of delay line devices used in applications ranging from digital to analog/digital clocks, from digital communications to digital signal processing. The device is primarily used in clock synchronization, signal regeneration and glitch reduction applications. It can also be used for applications such as data buffering, delay locked loops, PLL-based synchronization and timing systems.

The DS1045S-4 operates in two modes. In parallel mode, the device accepts four bits of synchronous data and outputs eight differential signals that are delayed by 0.25 to 13.75 nsec depending on the set-up time, the on-chip RC circuit and the off-chip capacitance. The signals can be reset to either the low or the high state within 0.25 to 8.75 nsec, depending on the reset time of the circuitry. In serial mode, the device can be used to delay a single signal instead of four. The device also features a built-in oscillator that ensures that the output remains synchronized with the clock signal.

The DS1045S-4 uses two types of delay elements: a differential transistor current source (TCTS) and a differential cascode current source (CCS). The TCTS generates a differential signal output by using the input clock signal to control the conduction of two transistors in a switch configuration. The CCS generates a differential signal output by using the input clock signal to control the conduction of two transistors in a current mirror configuration, providing better signal integrity than the TCTS. The chip also includes two oscillators, a clock driver, two reset logic circuits and several address, output enable and reset control inputs, allowing it to be used in a variety of applications.

The DS1045S-4 is an ideal choice for applications requiring fast, reliable and accurate signal processing. The device is designed to minimize clock skew and jitter, increase noise immunity and reduce power consumption. Furthermore, its wide operating frequency range and adjustable delays make it a versatile component capable of adapting to a variety of design requirements. In short, the DS1045S-4 is an ideal choice for applications such as clock synchronization, signal regeneration and glitch reduction.