FUNCTIONAL DESCRIPTION
The DDU37F-series device is a mechanically variable, FAST-TTL interfaced delay line. The signal input (IN) is reproduced at the tap output (OUT), shifted by an amount which can be adjusted between TD0 and TD0+ TDVAR, where TDVAR is given by the device dash number (See Table). The device operates from a single 5V supply and is TTL interfaced, capable of driving up to 10 TTL loads.

FEATURES
 • Ideal for “Set and Forget” applications
 • Multi-turn adjustment screw (approx. 40 turns)
 • Input & output fully TTL interfaced & buffered (10 T2L fan-out capability)
 • Resolution: As low as 0.12ns
 • Minimum delay (TD0): 6ns typical
 • Output rise time: 2ns typical
 • Min. input pulse width: 20% of maximum delay
 • Power dissipation: 230mW maximum
 • Operating temperature: 0° to 70°C (Commercial) -55° to 125°C (Military)
 • Temperature coefficient: 100 PPM/°C