GSN0727Z Arduin'er's View of RS-485

I am making a small project that should be able to work with sensors via RS-485. There is no hardware implementation of the protocol on board the microcontroller, but there is serial (TTL). It was decided to use MAX485 with a 9-element harness, since it is inexpensive and available in many stores. And … And then the news comes out that GSnanotech is releasing a microcircuit GSN0727Z in SOP8 package and GSN0726Z in LGA package (7Z – SOP8 / 6Z – LGA) –

RS-485 transceiver with half-duplex mode, low power consumption and high ESD protection.

Characteristics

In general, it is pleasant and unusual to read a datasheet in Russian 🙂

Now regarding the pinout, is it the same, that is, you can unsolder the Chinese one and solder ours, and everything will work (since my boards were already ready and I didn’t want to redo them at all)?

Tech support said YES.

Practical experience with my project board – YES!

Requests and responses on MAX485 and GSN0727Z are identical. YAYY …

MAX485

23:42:38.003 -> SEND DATA: [0]=2 [1]=3 [2]=0 [3]=4 [4]=0 [5]=1 [6]=c5 [7]=f8 
23:42:38.003 -> DATA RECEPTION: [0]=2 [1]=3 [2]=2 [3]=0 [4]=9 [5]=3c [6]=42 
23:42:38.036 -> глубина в мм: 9.00
23:42:38.036 -> 
23:42:38.534 -> SEND DATA: [0]=2 [1]=3 [2]=0 [3]=4 [4]=0 [5]=1 [6]=c5 [7]=f8 
23:42:38.534 -> DATA RECEPTION: [0]=2 [1]=3 [2]=2 [3]=0 [4]=9 [5]=3c [6]=42 
23:42:38.534 -> глубина в мм: 9.00

GSN0726Z

23:37:10.366 -> SEND DATA: [0]=2 [1]=3 [2]=0 [3]=4 [4]=0 [5]=1 [6]=c5 [7]=f8
23:37:10.366 -> DATA RECEPTION: [0]=2 [1]=3 [2]=2 [3]=0 [4]=9 [5]=3c [6]=42 
23:37:10.366 -> глубина в мм: 9.00
23:37:10.366 -> 
23:37:10.864 -> SEND DATA: [0]=2 [1]=3 [2]=0 [3]=4 [4]=0 [5]=1 [6]=c5 [7]=f8 
23:37:10.897 -> DATA RECEPTION: [0]=2 [1]=3 [2]=2 [3]=0 [4]=9 [5]=3c [6]=42 
23:37:10.897 -> глубина в мм: 9.00

Pay attention to the area of ​​the stones. On the left is the max485 stone, on the right is the GSN0727Z. I assume that the difference in area is due to the large manufacturing process of the GSN0727Z.

Price, delivery and how to order

MAX485 on Ali can be purchased from 10 rubles/piece. From 10 pieces. Delivery speed – as luck would have it.
GSN0727Z cost me 69 rubles/piece (including VAT). From 200 pieces. Free delivery. But the speed… )

After paying for the order, I waited 3 days for shipment, and in another 3 days the parcel arrived from Kaliningrad to Rostov-on-Don.

• Minimum order 200 pcs.

• Price excluding VAT – 11,500 rubles per batch of 200 pcs.

• Work only with legal entities (accept payment)

• Delivery by DPD transport company (others are also available for an additional fee, as I understand it, I may be wrong)

• The parcel can be sent to an individual

• The order is made via e-mail (it would be more convenient via telegram), so ask all your questions at once in one letter so that the correspondence does not last several days

• The documentation is located on the official website and is available for download after specifying an email address.