3-State Octal Bus Transceiver IC - 74HC245
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The 74HC Series 74HC245 octal bus transceivers are designed for asynchronous two-way communication between data buses. The control function implementation minimizes external timing requirements. The device allows data transmission from the A Bus to the B Bus or from the B Bus to the A Bus depending upon the logic level at the direction control (DIR) input. The enable input (G) can be used to disable the device so that the buses are effectively isolated.
|
Pin Number |
Pin Name |
Description |
|
1 |
Direction Control (DIR) |
This pin decides the direction of the Data. |
|
2 to 9 |
Data Input/output (A0-A7) |
These 8 pins can be used as 8-bit Input or 8-bit Output pins based on the state of DIR pin |
|
10 |
Ground (GND) |
Connected to the ground of the system |
|
11 to 18 |
Data Input/output (B0-B7) |
These 8 pins can be used as 8-bit Input or 8-bit Output pins based on the state of DIR pin |
|
19 |
Output Enable (OE) |
Active Low pin – Used to Enable/Disable Input |
|
20 |
Supply Voltage (Vcc) |
Differential Analog input +. Connect to ADC input |
| Supply Voltage (VCC) | 7 V |
| Input Voltage (VI) | 7 V |
| Operating free-air temperature range | 0°C to +70°C |
| Storage temperature range | –65°C to +150°C |
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