The DDU37F-series device is a mechanically variable, FAST-TTL interfaced delay line. The signal input (IN) is reproduced at the tap output (OUT),

NS5B1G385 Single (NO) Normally Open SPST Analog Switch The NS5B1G385 is Single Pole Single Throw (SPST) high−speed TTL−compatible switch. The low resistance and capacitance characteristics of this switch make it ideal for low−distortion audio, video, and data routing applications. The switch has a normally open CASE-RATED BIPOLAR TRANSISTOR FOR TYPE 3DD1555 FOR LOW FREQUENCY, 3DD1555 datasheet, 3DD1555 circuit, 3DD1555 data sheet : JSMC, alldatasheet, datasheet, Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs, and other semiconductors.