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SN74LV8153: Replacement of the industry standard 8255A

Guru 12155 points
Part Number: SN74LV8153
Other Parts Discussed in Thread: TCAL6416, TCA6424A, MSP430G2203

Hi,

We use the Intersil 82C55A, but we are considering replacing it. Does TI release the same family? If not, please tell me a similar product.

82C55A - Data sheet

https://www.renesas.com/jp/ja/document/dst/82c55a-datasheet?r=496461

Thanks,

Astro

  • There is no pin-to-pin replacement. This kind of processor interface became obsolete decades ago.

    Nowadays, such I/O functionality is integrated in microcontrollers, and you are supposed to choose one that is big enough.

    I/O expanders are designed with a serial interface in order to reduce the number of bus lines needed. The UART interface of the SN74LV8153 is very unusual, most devices use I²C, e.g., TCA6424A or TCAL6416. If you need an interface that is faster than I²C, then you should program a small microcontroller like the MSP430G2203 as an SPI slave.

    If you need only outputs or only inputs, then a shift register or latch might be useful.