Recommended pad layout, Production considerations – Linx Technologies LICAL-TRC-MT User Manual
Page 20

–
–
–
–
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