From 5d9934e0d13eeb75f33548074e40db60821fe993 Mon Sep 17 00:00:00 2001 From: PhrAx <68938882+phrax0@users.noreply.github.com> Date: Tue, 18 Aug 2020 00:08:32 -0700 Subject: [PATCH] Converted bus transceiver and linear regulator information into a table. --- Transceiver-Comparison.md | 37 +++++++++++-------------------------- 1 file changed, 11 insertions(+), 26 deletions(-) diff --git a/Transceiver-Comparison.md b/Transceiver-Comparison.md index 837c253..f67e620 100644 --- a/Transceiver-Comparison.md +++ b/Transceiver-Comparison.md @@ -1,33 +1,18 @@ The original RaSCSI uses the [SN74LS641](https://www.ti.com/lit/ds/symlink/sn74ls641.pdf) bus transceiver. However, with each device needed 4 of these @ $3.30 each, the amounts to a significant percentage of the cost. The following contains some notes regarding what other SCSI emulators have used. -- RaSCSI Original Version - - [SN74LS641-1](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74LS641-1DW?qs=SL3LIuy2dWxXHvPKLk%252BfLw%3D%3D) - - [Data Sheet](https://www.ti.com/lit/ds/symlink/sn74ls641.pdf) - - Cost: $3.30 - - Qty Needed: 4 - - Note: VCC is 5v -- [Scuznet](https://github.com/saybur/scuznet) - - [SN74LVTH126DR](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74LVTH126DR/?qs=sGAEpiMZZMtYFXwiBRPs0%252b5WI0cyeyLc) - - Cost: $0.64 - - Qty Needed: 4 -- Scsi2SD - According to [LC-SCSI](https://github.com/pgodwin/LC-SCSI/wiki) - - [SN74LVT245B](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74LVT245BPWR?qs=afYny40WCj1v38f4br9Q%2Fg%3D%3D) - - [Data Sheet](https://www.ti.com/lit/ds/symlink/sn74lvt245b.pdf) - - Cost: $0.90 - - Qty Needed: 4 - - Note: VCC is 3.3v -- Potential Alternative - 74AHC245 - - [74AHC245](https://datasheet.lcsc.com/szlcsc/Nexperia-74AHCT245PW-118_C173388.pdf) - - Cost: [$0.22](https://lcsc.com/product-detail/74-Series_Nexperia-74AHCT245PW-118_C173388.html) - - Qty Needed: 4 - - Note: VCC is 5v +| Product | Chip and Datasheet | Cost ($) | Qty needed | Notes | +| - | - | - | - | - | +| RaSCSI Original Version | [SN74LS641-1](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74LS641-1DW?qs=SL3LIuy2dWxXHvPKLk%252BfLw%3D%3D) | 3.30 | 4 | VCC is 5v | +| [Scuznet](https://github.com/saybur/scuznet) | [SN74LVTH126DR](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74LVTH126DR/?qs=sGAEpiMZZMtYFXwiBRPs0%252b5WI0cyeyLc) | 0.64 | 4 | - | +| Scsi2SD - According to [LC-SCSI](https://github.com/pgodwin/LC-SCSI/wiki) | [SN74LVT245B](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74LVT245BPWR?qs=afYny40WCj1v38f4br9Q%2Fg%3D%3D), [Data Sheet](https://www.ti.com/lit/ds/symlink/sn74lvt245b.pdf) | 0.90 | 4 | VCC is 3.3v | +| Potential Alternative - 74AHC245 | [74AHC245](https://datasheet.lcsc.com/szlcsc/Nexperia-74AHCT245PW-118_C173388.pdf) | [0.22](https://lcsc.com/product-detail/74-Series_Nexperia-74AHCT245PW-118_C173388.html) | 4 | VCC is 5v | -Other parts -- Linear Regulator (for active terminator) - - [LM1117SX](https://www.mouser.com/ProductDetail/Texas-Instruments/LM1117SX-ADJ-NOPB?qs=X1J7HmVL2ZFVdHO2uaroKA%3D%3D) - - LDO Voltage Regulators 800mA LDO Linear Reg - - Cost: $1.51 +Some additional parts + +| Part| Chip and Datasheet | Cost ($) | Qty needed | Notes | +| - | - | - | - | - | +| Linear Regulator (for active terminator) | [LM1117SX](https://www.mouser.com/ProductDetail/Texas-Instruments/LM1117SX-ADJ-NOPB?qs=X1J7HmVL2ZFVdHO2uaroKA%3D%3D) | 1.51 | 1 | 800mA LDO | ## Discussion