Quad programmable 4-bit TTL/CMOS delay line
Data Delay Devices Inc.
Data Delay Devices Inc. - 3D7444-1.5
Data Delay Devices Inc. - 3D7428-8
Data Delay Devices Inc. - 3D7428-25
Data Delay Devices Inc. - 3D7428D-1.5
Data Delay Devices Inc. - 3D7428D-2
Data Delay Devices Inc. - 3D7428D-5
