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SN74LVCHR16245A: SN74LVCHR16245A

Krystal Phoenix
Prodigy 140 points
Part Number: SN74LVCHR16245A
Other Parts Discussed in Thread: SN74LVC16245A,

I want to use Transciver in my data bus for driving multiple flashes. But i am confused between SN74LVC16245A and SN74LVCHR16245A .

Both are aproximately similar as i have studied their datasheets but their functional diagram confuses me. 

SN74LVCHR16245A has two Not gates implemented in data path and SN74LVC16245A has no gates. 

SN74LVCHR16245A says This 16-bit (dual-octal) noninverting bus transceiver

SN74LVC16245A says device is designed for asynchronous communication between data buses.

What is the differrnce between them. I am confused what is suitable for my design. 


I am interfacing a processor with multiple flashes but i want to use a buffer between them for driving these flashes.

  • 0
    TI__Mastermind 45725 points

    Hi Krystal,

    The 'H' in the part number means it has the "Bus Hold" feature. I'm going to include two links to the FAQ page which will help answer this.

    (Question 2)

    (Question 6 and maybe 7. There is additional material to look at well hyperlinked)

    Let me know if this helps, and welcome to the forum!

  • 0 in reply to Dylan Hubbard
    Prodigy 140 points

    Thanks alot for sharing the links, it really helped me to understand the difference.

    So this means the two not gates that are shown on 1A1 pin in Figure 4 of SN74LVCHR16245A datasheet are for data hold? Because in SN74LVC16245A , there are no not gates shown in functional block diagram.