MCU module (RS-485 communication) circuit

Example of MCU module circuit by discrete solution

MCU module (RS-485 communication) circuit

Lineup

Standard digital isolator

Part number DCL540C01 DCL540D01 DCL540L01 DCL540H01 DCL541A01 DCL541B01
Package SOIC16-W
Channel 4 (Forward: 4, Reverse: 0) 4 (Forward: 3, Reverse: 1)
BVS [Vrms] 5000
Topr [°C] -40 to 110
Default Output State Low High Low High Low High
Control signal - Output Enable Input Disable

[Note] DCL54xx01 Series products are under development. The specification is subject to change without notice.

High voltage CMOS linear regulator

Part number Output voltage [V] Marking
TCR1HF18A/B 1.8 1F8
TCR1HF25A/B 2.5 2F5
TCR1HF28A/B 2.8 2F8
TCR1HF30A/B 3.0 3F0
TCR1HF31A/B 3.1 3F1
TCR1HF32A/B 3.2 3F2
TCR1HF33A/B 3.3 3F3
TCR1HF50A/B 5.0 5F0

A : With discharge function,  B : Without discharge function

[Note] TCR1HFxxA / TCR1HFxxB products are under development. The specification is subject to change without notice.

Small surface mount LDO regulator

Part number TCR3DF Series TCR2EF Series
Package SMV SMV
VIN (Max) [V] 5.5 5.5
IOUT (Max) [mA] 300 200
VOUT [V] 1.0 to 4.5 1.0 to 5.0

CMOS logic IC

Part number 74VHC125FT 74VHC541FT 74VHCV541FT
Package TSSOP14B TSSOP20B
VCC [V] 2.0 to 5.5 2.0 to 5.5 1.8 to 5.5
tPD (Typ.) [ns]
@VCC = 5 V, CL = 15 pF
3.8 3.5 3.9
Topr (Max) [°C] 125 125 125
Function

Quad bus buffer
Non-inverted

(3-state outputs)

Octal bus Buffer
Non-inverted

(3-state outputs)

Octal Schmitt bus buffer
Non-inverted

(3-state outputs)

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