Circuits-dat/circuits-dat.md
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@@ -10,4 +10,6 @@
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- [[LC-circuits-dat]]
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-- [[DC-blocking-dat]] - [[AC-blocking-dat]]
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\ No newline at end of file
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+- [[DC-blocking-dat]] - [[AC-blocking-dat]]
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+
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+- [[logic-gate-dat]] - [[buffer-dat]]
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\ No newline at end of file
Circuits-dat/logic-gate-dat/Buffer-dat/buffer-dat.md
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@@ -3,6 +3,36 @@
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- [[octal-buffer]] - [[shift-register]]
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+## common used
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+
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+- [[74HC245-dat]] - [[74HCT245-dat]]
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+
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+- [[CD4050-dat]]
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+
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+
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+| Specification | CD4050 | 74HC245 |
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+|----------------------------|----------------------------------|----------------------------------|
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+| Function | Hex buffer (non-inverting) | Octal bus transceiver (bi-directional) |
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+| Logic Family | CMOS (CD4000 series) | HC (High-speed CMOS) |
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+| Number of Buffers | 6 (hex) | 8 (octal) |
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+| Direction Control | Unidirectional | Bi-directional with direction control |
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+| Voltage Range | 3V to 15V | 2V to 6V |
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+| Typical Operating Voltage | 5V, 10V, 15V | 5V |
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+| Input Voltage Tolerance | Up to 15V | Vcc + 0.5V (max) |
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+| Input Type | TTL/CMOS | CMOS/TTL compatible |
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+| Output Drive Capability | Moderate | High (up to ±35mA sink/source) |
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+| Output Type | CMOS push-pull | CMOS push-pull |
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+| Propagation Delay (at 5V) | ~200 ns | ~8 ns |
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+| Package Types | DIP, SOIC, etc. | DIP, SOIC, etc. |
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+| Use Case | Level shifting (e.g. 5V to 3.3V) | Bus interfacing, data buffering |
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+
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+
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+Summary:
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+
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+**CD4050** is ideal for **level shifting **and operates over a wide voltage range. It is tolerant of high-voltage inputs.
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+
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+**74HC245** is a high-speed **bi-directional bus buffer**, typically used for **bus-oriented communication** and interfacing between microcontrollers and peripherals.
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+
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## SINGLE BUFFER/DRIVER WITH OPEN DRAIN OUTPUT
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Tech-dat/Interface-dat/interface-dat.md
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@@ -1,7 +1,9 @@
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# interface dat
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-- [[RS485-DAT]] - [[RS232-dat]] - [[RS422-dat]] - [[can-dat]]
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+- [[RS485-DAT]] - [[modbus-dat]]
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+
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+- [[RS232-dat]] - [[RS422-dat]] - [[can-dat]]
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- [[POE-dat]]
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Tech-dat/Network-dat/network-dat.md
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@@ -13,11 +13,11 @@
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- long distance = [[lora-dat]] - [[lorawan-dat]]
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-
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-
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- [[RFID-dat]]
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-- [[M2M-dat]] - [[LTE-dat]]
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+- [[M2M-dat]] - [[LTE-dat]] - [[LWPA-dat]]
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+
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+- [[interface-dat]]
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## RC apps protocols
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... ...
@@ -35,6 +35,7 @@ and more - [[IBUS-dat]] - [[PPM-dat]] - [[FPort-dat]] - [[SPEKTRUM-dat]] - [[SUM
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- [[ardupilot-dat]]
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+- [[openwrt-dat]]
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## RF boards
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Tech-dat/tech-dat.md
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@@ -45,7 +45,9 @@
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- [[LED-dat]] - [[LED-strip-dat]]
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-- [[display-dat]]
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+- [[display-dat]] - [[LCD-dat]] - [[OLED-dat]] - [[TFT-dat]] - [[nokia-5110-dat]]
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+
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+- [[touchscreen-dat]] - [[touch-sensor-dat]]
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### Sensors and actuator
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