EvilmonkeyzDesignz | CCU #121: Dallas Semiconductor DS2151 T1 Transceiver @EvilmonkeyzDesignz | Uploaded March 2024 | Updated October 2024, 1 hour ago.
T1 Protocol Single-Chip Transceiver
***Quick Facts!***
Manufacturer: Dallas Semiconductor
Part Number: DS2151Q
Package Type: 44-pin CLCC (Ceramic Leaded Chip Carrier)
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This part has made it into my top 10 list for sure. It has everything going for it, ceramic package, gold leads and lid, huge die inside, and it's made by Dallas Semiconductor, which means if full of great chip art (aka, chip graffiti). The first thing that caught my eye was a figure next to a wire bond pad that I originally thought was a lion, but when I zoomed it I saw it was Mr. T! He is sporting a very fashionable ‘T1’ necklace. This chipart has apparently been seen in other silicon dies (I’m guessing from other T1 chips) as well. There are some other interesting things to note, like the engineer’s initials in the upper left corner, and the “Made In Texas” art in the bottom left. Overall, this was just a wonderful part to look at.
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The part itself is also very interesting. The DS2151Q is a T1 SCP, as the title above states. T1 is a high speed digital protocol that was developed by AT&T all the way back in 1957 and later rolled out in the 1962. It’s main function was to replace the analog telephone networks of the time with a digital one. The original T1 protocol allows communication at a humble 1.544Mbps, which would allow for up to 24 voice channels all transmitting at 64Kbps. Later improvements to the hardware allowed for faster data rates. A T1 link consists of an RX and TX differential pair, and the DS2151Q then communicates with another IC like a microprocessor, via a parallel bus. There are a lot of really good resources online about T1, and the associated Digital Signal 1 (DS1) signaling scheme.
T1 Protocol Single-Chip Transceiver
***Quick Facts!***
Manufacturer: Dallas Semiconductor
Part Number: DS2151Q
Package Type: 44-pin CLCC (Ceramic Leaded Chip Carrier)
-
This part has made it into my top 10 list for sure. It has everything going for it, ceramic package, gold leads and lid, huge die inside, and it's made by Dallas Semiconductor, which means if full of great chip art (aka, chip graffiti). The first thing that caught my eye was a figure next to a wire bond pad that I originally thought was a lion, but when I zoomed it I saw it was Mr. T! He is sporting a very fashionable ‘T1’ necklace. This chipart has apparently been seen in other silicon dies (I’m guessing from other T1 chips) as well. There are some other interesting things to note, like the engineer’s initials in the upper left corner, and the “Made In Texas” art in the bottom left. Overall, this was just a wonderful part to look at.
-
The part itself is also very interesting. The DS2151Q is a T1 SCP, as the title above states. T1 is a high speed digital protocol that was developed by AT&T all the way back in 1957 and later rolled out in the 1962. It’s main function was to replace the analog telephone networks of the time with a digital one. The original T1 protocol allows communication at a humble 1.544Mbps, which would allow for up to 24 voice channels all transmitting at 64Kbps. Later improvements to the hardware allowed for faster data rates. A T1 link consists of an RX and TX differential pair, and the DS2151Q then communicates with another IC like a microprocessor, via a parallel bus. There are a lot of really good resources online about T1, and the associated Digital Signal 1 (DS1) signaling scheme.
