FUNCTIONAL DESCRIPTION

The 3D7444 device is a small, versatile, quad 4-bit programmable monolithic delay line. Delay values, programmed via the serial interface, can be independently varied over 15 equal steps. The step size (in ns) is determined by the device dash number. Each input is reproduced at the corresponding output without inversion, shifted in time as per user selection.

FEATURES

? Four indep’t programmable lines on a single chip

? All-silicon CMOS technology

? Low quiescent current (1mA typical)

? Leading- and trailing-edge accuracy

? Vapor phase, IR and wave solderable

? Auto-insertable (DIP pkg.)

? Increment range: 1.5ns through 25ns

? Delay tolerance: 1ns or 2 (See Table 1)

? Temperature stability: ±2 typical (0C-70C)

? Vdd stability: ±1 typical

? Minimum input pulse width: 10 of total delay