Recommended pad layout, Production considerations – Linx Technologies LICAL-TRC-MT User Manual

Page 20

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34

35

Reset RX

Mode timer

Receive

Mode

AND the Command

Byte with Output

Mask creating

Output Byte

Are any bits

in the Output

Byte high?

Yes

No

Is the LATCH

line high?

XOR Output Byte

with current status

line output states

Output the Output
Byte on the status

lines

Send the

confirmation packet

Set to

Receive Mode

Yes

No

No

Yes

Any valid data?

Go to
Mode

Select

Yes

No

Did the

RX Mode

timer timeout?

No

Yes

Was the

received packet

targeted?

Does the

target address

match the local

address?

Yes

No

Is Confirm

enabled?

Yes

No

Set to

Transmit Mode

Output TXID,

received Data byte,
and CstmData byte
on the SER_IO line

Is Confirm

enabled?

Yes

No

Assemble the

confirmation packet

Figure 27: MT Series Transcoder Receive Flowchart

Recommended Pad Layout

The MT Series transcoders are implemented in an industry standard
20-pin Shrink Small Outline Package (20-SSOP). The recommended layout
dimensions are shown in Figure 5.

Production Considerations

These surface-mount components are designed to comply with standard
reflow production methods. The recommended reflow profile is shown
below and should not be exceeded, as permanent damage to the part may
result.

0.047
(1.19)

0.016
(0.41)

0.026
(0.65)

0.328 (8.33)

0.234 (5.94)

Figure 28: PCB Layout Dimensions

240°C Max

0

25

50

75

100

125

150

175

200

225

250

TEMPERATURE (°C)

275

0

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

320

TIME (SECONDS)

340

360

380

420

400

260°C Max

Lead-Free
Sn / Pb

Figure 29: MT Series Reflow Profile

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