From c188d9c056a97cb31983e9cbd0a4363f93d437e9 Mon Sep 17 00:00:00 2001
From: akuker <34318535+akuker@users.noreply.github.com>
Date: Fri, 11 Feb 2022 21:12:53 -0600
Subject: [PATCH] Updated Transceiver Comparison (markdown)

---
 Transceiver-Comparison.md | 72 +++++++++++++++++++++++++++++++++++----
 1 file changed, 66 insertions(+), 6 deletions(-)

diff --git a/Transceiver-Comparison.md b/Transceiver-Comparison.md
index b74e387..c8e5a74 100644
--- a/Transceiver-Comparison.md
+++ b/Transceiver-Comparison.md
@@ -135,17 +135,77 @@ Switched by `PI-IND`:
 
 # Detailed discusison/comparison
 
-[Wikipedia list of 74xx logic parts](https://en.wikipedia.org/wiki/List_of_7400-series_integrated_circuits#74x200_%E2%80%93_74x299)
+## 74xx series logic parts
 
-| 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 |
+[Wikipedia list of 74xx logic parts](https://en.wikipedia.org/wiki/List_of_7400-series_integrated_circuits#74x200_%E2%80%93_74x299)
 
 |Part number	| Units	| Description	| Input	| Output	| Pins	| Datasheet|
 | ------------- | ----- | ------------- | ----- | ------------- | ----- | ---------|
+| 74x125	| 4	| quad bus buffer, negative enable		| 		| three-state	| 14	| SN74LS125A |
+| 74x126	| 4	| quad bus buffer, positive enable		| 		| three-state	| 14	| SN74LS126A |
 | 74x245	| 8	| octal bus transceiver, non-inverting outputs	| Schmitt trigger | three-state	| 20	| SN74LS245 |
-| 74x641	| 1	| octal bus transceiver, non-inverting outputs	|		  | open-collector	| 20	| SN74LS641 |
+| 74x641	| 1	| octal bus transceiver, non-inverting outputs	|		| open-collector| 20	| SN74LS641 |
 
-### Notes
+## Logic Families
+
+[Texas Instruments Logic guide](https://www.ti.com/lit/sg/sdyu001ab/sdyu001ab.pdf)
+
+LS, LVTH, LVT, AHCT, F, AHC, ALS, F, ABT, HCT, 
+
+| Families	| Voltage| Process  | Bus-Hold |Series Damping | Resistors | IOFF | Schmitt Triggers |Overvoltagetolerant Inputs| Power-off Output Disable | Power-up 3-State|
+|---------------|--------|----------|---|---|---|---|---|---|---|
+| ABT		| 5	 | Bi-CMOS  | X | X |   |   |   | X | X |
+| AHC		| 3.3, 5 | CMOS     |   |   |   |   | X | X |   |
+| AHCT/HCT	| 5	 | CMOS     |   |   |   |   | X | X |   |
+| ALS		| 5	 | Bi-Polar |   |   |   |   |   |   |   |
+| F		| 5	 | Bi-Polar |   | X |   |   |   |   |   |
+| LS		| 5	 | Bi-Polar |   |   |   |   |   |   |   |
+| LVT/LVTH *	| 3.3	 | Bi-CMOS  | X | X | X |   |   | X | X |
+
+
+
+
+| Families	| Bus-Hold |Series Damping | Resistors | IOFF | Schmitt Triggers |Overvoltagetolerant Inputs| Power-off Output Disable | Power-up 3-State|
+|---------------|----------|---------------|-----------|------|------------------|--------------------------|--------------------------|------------------|
+| ABT		|
+| AHC		|
+| AHCT/HCT	|
+| ALS		|  
+| F		|
+| LS		|
+| | 
+
+* LVT/LVTH: The original LVT devices had the bus-hold feature. The LVTH replacements for these devices not only have bus hold, but also
+have the High-Impedance State During Power Up and Power Down feature
+
+
+
+
+Encoders/
+Decoders
+Digital Comp/
+Parity Gen.
+Gates
+Transceivers
+Level Translators
+Phase Lock Loops
+Bus-Hold
+Series Damping
+Resistors
+IOFF (Partial
+Power Down)
+Schmitt Triggers
+Overvoltagetolerant Inputs
+Power-off
+Output Disable
+Power-up 3-State
+Bipolar
+CMOS
+B
+
+
+## What about NTS0104?
+
+# Notes
 
 <a name="ref-1">(1)</a> [Comment by `saybur`](https://68kmla.org/forums/index.php?app=forums&module=forums&controller=topic&id=30399&page=7&tab=comments#comment-646496)