Can you find the datasheet? - Page 1
Forum section: electronics / general

author: Floopy
author_rank: Regular Contributor
timestamp: February 04, 2018, 05:53:58 am
content: I tried to make the title sound interesting, but obviously I have failed.Anyway...I have all these IC's that I can't seem to find the datasheets or info on them. Maybe someone can help me out.Thanks,and sorry for the blurry pictures.

author: Floopy
author_rank: Regular Contributor
timestamp: February 04, 2018, 05:55:19 am
content: More IC's

author: Circlotron
author_rank: Super Contributor
timestamp: February 04, 2018, 05:56:30 am
content: Try herehttp://www.datasheetcatalog.com/

author: T3sl4co1l
author_rank: Super Contributor
timestamp: February 04, 2018, 05:59:16 am
content: 946 may be RTL logic, try MC946 and such. F is... Ferranti?The square "S" is Signetics, I forget what prefix they used but the number is probably findable.All the MC1xxx are well known parts, I see logic, uh MC1000 was the first ECL family wasn't it?, 1458 is a dual op-amp, etc.MC is Motorola's prefix, and the circle-M is their logo. The other logo is TI.Metal can is Analog Devices, try AD1403.Tim

author: Floopy
author_rank: Regular Contributor
timestamp: February 04, 2018, 06:00:40 am
content: More IC's

author: Floopy
author_rank: Regular Contributor
timestamp: February 04, 2018, 06:03:36 am
content: I know this will come up.The 7425 is NOT a TTL logic chip.

author: Floopy
author_rank: Regular Contributor
timestamp: February 04, 2018, 06:07:00 am
content: Okay the pictures where so bad. Here are the part numbers.MC1103PMC1033PMC3002PThanks

author: Floopy
author_rank: Regular Contributor
timestamp: February 04, 2018, 06:09:45 am
content: Quote from: Circlotron on February 04, 2018, 05:56:30 amCame up dry, that's why I came here.

author: amspire
author_rank: Super Contributor
timestamp: February 04, 2018, 06:14:20 am
content: You shouldn't have any problem with most of those IC's. Are you sure that a search for MC14584, ULN2065, MC1458 comes up with nothing?The Fairchild 946 is an old Diode Transistor logic I think - a quad input nand ( or nor?) gate. Very slow.The Signetics 2522 is a 128 bit shift register, and I think the other Signetics 25xx chips are shift registers of different sizes. This dates back to when an IC with 128 registers was impressive.The Faichild 33572DC is a 2MHz 4x32 bit shift register.

author: Floopy
author_rank: Regular Contributor
timestamp: February 04, 2018, 06:18:18 am
content: Quote from: amspire on February 04, 2018, 06:14:20 amForgot to take them out of the picture.

author: amspire
author_rank: Super Contributor
timestamp: February 04, 2018, 06:28:36 am
content: I believe the 1403A in the metal can is another shift register - a 512 bit PMOS dynamic shift register. That means you have to keep clocking or it looses its data. It is the same as a Signetics 2503.

author: amyk
author_rank: Super Contributor
timestamp: February 04, 2018, 05:10:02 pm
content: 946 is DTL logic:http://pdf.datasheet.live/79534528/fairchildsemi.com/946.pdf

author: Floopy
author_rank: Regular Contributor
timestamp: February 04, 2018, 05:43:41 pm
content: Quote from: amyk on February 04, 2018, 05:10:02 pmThank you exactly what I was looking for!

author: Floopy
author_rank: Regular Contributor
timestamp: February 04, 2018, 05:59:24 pm
content: Well today I put everything away and these were the last four. I don't know why I can't seem to find info on them.

author: amyk
author_rank: Super Contributor
timestamp: February 04, 2018, 06:22:08 pm
content: TC53512AP - mask ROM. No datasheet buthttps://www.vt100.net/dec/vt320/componentssuggests pinout is compatible with 27512.Philips 224A807 - mask-programmed 804x or 805x microcontroller, judging by Intel name also present.Philips KTL7494 - probably another mask-programmed MCU/ASIC, possibly from CD playerMOSTEK MK1007N - 320-bit dynamic shift register (http://bitsavers.informatik.uni-stuttgart.de/components/mostek/_dataBooks/1974_Mostek_Integrated_Circuit_Guide.pdf)The two Philips ones are ASICs so I don't think you'd be able to easily find information, but the other two were just a Google away. Could you try a bit harder next time?

author: SeanB
author_rank: Super Contributor
timestamp: February 04, 2018, 06:49:20 pm
content: Phillips ones are mask rom ( actually the Eprom versions in a windowless package in most cases, as Phillips rarely did the mask rom versions unless you ordered 1 million chips and paid up front for the mask set and the chips) versions of the 8048 microcontroller, so you can use them as a 8048 in the full system configuration, though you lose the internal peripherals that otherwise use the address, data and control pins.Toshiba part the same, a regular 27512 Eprom in a OTP package, programmed at Toshiba factory for the customer as a service.Others are IDT 7132, dual port 8k RAM.https://www.idt.com/products/memory-logic/multi-port-memory/asynchronous-dual-port-rams/7132-2k-x-8-dual-port-ramCypress part is a cache memory controller, used to be on 80286 boards IIRC.