Other Parts Discussed in Thread: SN74LS374, SN74HCS595
Good Day. I have a customer who is working with SN54LS374. Please see below his query for your reference. Thank you very much.
I am originally a software engineer but am now working with old Intel 8751 microcontrollers. I am having some difficulty with the SN54LS374 Transparent Latches.
I placed the SN54LS374 on my PROTO BOARD PB-503. I connected up the device and it does not appear to latch the D values to the Q outputs.
I placed the SN54SL373 and the SN54SL374 onto my PB-503 Proto Board. I connected the devices utilizing the specified resistors, reference page 5 of the datasheet. I connected VCC pin 20, GND pin10 , 1D pin3 to +5V. I measured 1Q and it was low. I then applied +5V to Ct pin 11, then dropped it. I then measured 1Q and it was still low. The +5 was not latched to 1Q.