Details

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BUY ADM3485ARZ https://www.utsource.net/itm/p/4177747.html
3.3 V Slew Rate Limited, Half- and Full-Duplex, RS-485/RS-422 Transceivers

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC	Operating	3.0	-	5.5	V
Data Rate		Differential		20		Mbps
Output Current	IOZ	Short-Circuit		±100		mA
Driver Output Voltage	VO	Differential	1.4	-	2.7	V
Receiver Input Voltage	VI(N)	Common-Mode	-7	-	12	V
Propagation Delay	tPD			15		ns
Skew	tSKEW			5		ns
Power Consumption	IDD	Quiescent		1		mA

Instructions for ADM3485ARZ

1. Power Supply:

   • Ensure the supply voltage (VCC) is within the range of 3.0V to 5.5V.
   • Connect a decoupling capacitor close to the power pins to stabilize the supply.

2. Data Transmission:

   • The device supports data rates up to 20 Mbps. Ensure that the data rate does not exceed this limit to avoid signal integrity issues.

3. Driver Operation:

   • The driver output voltage should be between 1.4V and 2.7V differential. Check the load impedance to ensure proper signal levels.

4. Receiver Operation:

   • The receiver can handle common-mode input voltages from -7V to 12V, providing robust operation in noisy environments.

5. Timing Considerations:

   • The propagation delay is typically 15ns. Account for this delay in your timing budget.
   • Skew between differential pairs is typically 5ns. Ensure layout practices minimize additional skew.

6. Power Consumption:

   • In quiescent mode, the device consumes approximately 1mA. Design your power management system accordingly.

7. Short-Circuit Protection:

   • The device can withstand short-circuits with an output current capability of ±100mA without damage.

8. Installation:

   • Follow standard surface-mount technology (SMT) guidelines for installation. Ensure proper thermal management if operating at higher temperatures or currents.

(For reference only)