jhuang@ccnysci.UUCP (Jian Huang) (11/27/89)
is there any one who knows what the 7497 TTL chip is? i checked several data books but got no answer. its function seems to be a kind of frequency multiplier which has a pulse input and a 6-bit data input, its output's freqency will be proportional to that data: Fout=Fin*data/64. thanks in advance.
vaso@mips.COM (Vaso Bovan) (11/27/89)
In article <3759@ccnysci.UUCP> jhuang@ccnysci.UUCP (Jian Huang) writes: >is there any one who knows what the 7497 TTL chip is? i >checked several data books but got no answer. its function >seems to be a kind of frequency multiplier which has a >pulse input and a 6-bit data input, its output's freqency >will be proportional to that data: Fout=Fin*data/64. >thanks in advance. The 7497 is a "6-bit" Synchronous Binary Rate Multiplier." It is/was made by National Semiconductor and Texas Instruments. Many of these "What Is It" questions can be answered by reference to the "IC Master," published yearly (with two interim updates) by Hearst Publishing. The "D.A.T.A." books can also be consulted, although, I, for one, find them less useful.