22-12-2022, 04:31 PM
Only the HC/HCT parts worked at 27MHz, and then only the Philips ones were reliable. The HC/HCT221 dual monostables also had wide variation between makes. Whereas LS221 was utterly predictable. Of course good design doesn't use monostables but there are some jobs that are a nuisance to do any other way.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv







