Page 2 Non-Sound Decoder MX618 - MX634 and Sound Decoder MX640 - MX648
1 Overview
These decoders are suitable for N, HOe, HOm, TT, HO, OO, Om and O gauge engines.
They operate in the NMRA-DCC data format as well as the MOTOROLA protocol, in DC analog
mode with DC power packs (including PWM) and with AC analog (Märklin Transformers with over-
voltage pulses for direction change. Exception: MX621 and MX640)).
25 x 11 x 2 mm Non-Sound - 0.8 A - 4 Fu-Outputs
“Thin decoder“, single layer board, especially low priced
NOTE to Typ MX600P12 (with PluX-12 interface):
the dimensions of this design do NOT correspond to the PluX standard.
MX600 plug configurations:
9 wires (120mm long) for power pick-up, motor and 4 function outputs.
MX600, with 8-pin plug as per NEM652 on 70mm wires.
Wie MX600, with 12 pin PluX connector mounted on circuit board.
15 x 9.5 x 2.8 mm Non-Sound - 0.7 A - 4 Fu-Outputs + 2 logic level outputs - SUSI
Next 18 – Decoder (“Railcommunity” Interface-Standard RCN-118)
MX620 Out of production since June of 2010; replaced by MX621 and MX622.
12 x 8.5 x 2.2 mm Non-Sound - 0.7 A DCC and DC-Analog (not for MOTOROLA)
Sub-miniature Decoder, with reduced ZIMO features.
TYPCIAL APPLICATION: Vehicles in N, HOe and HOm.
MX621 plug configurations:
7 wires (120mm long) for power pick-up, motor and 2 function outputs. Two
more function outputs on solder pads.
MX621 with 6-pin plug as per NEM651, mounted on the circuit board.
MX621 with 8-pin plug as per NEM652 on 70mm wires.
MX621 with 6-pin plug as per NEM651 on 70mm wires.
14 x 9 x 2.5 mm Non-Sound - 0.8A - 6 Fu-Outputs - 2 Servos - SUSI
Miniature-Decoder, with all ZIMO features.
TYPCIAL APPLICATION: N, HOe, HOm; and HO vehicles with limited space.
MX622 plug configurations:
7 wires (120mm long) for power pick-up, motor and 2 function outputs. Two
more function outputs on solder pads.
MX622 with 8-pin plug as per NEM652 on 70mm wires.
MX622 with 6-pin plug as per NEM651 on 70mm wires.
MX622 with 6-pin plug as per NEM651, mounted on circuit board.
20 x 8.5 x 3.5 mm Non-Sound - 0.8 A - 4 Fu-Outputs - 2 Servos - SUSI
Small Decoder; built especially narrow for universal applications in tight spac-
es.
TYPICAL APPLICATION: HO and TT... Due to excellent dielectric strength
(50V), it is also suitable for AC analog with the old Märklin transformer.
MX623 plug configurations:
MX623
MX623R
MX623F
MX623P12
7 highly flexible wires (120mm) for pick-up, motor and 2 function outputs. Solder
pads for 4 additional logic level outputs, two of them as servo outputs or SUSI.
MX623 with 8-pin plug as per NEM652 on 70mm wires.
MX623 with 6-pin plug as per NEM651 on 70mm wires.
MX623 with 12 pin PluX connector, mounted on circuit board.
20 x 11 x 3.5mm Non-Sound - 1.0A - 6 Fu-Outputs - 2 Servos - SUSI
Compact HO loco decoder, for universal applications.
TYPICAL APPLICATION: HO. Due to excellent dielectric strength (50V), the de-
coder is also suitable for AC analog operation with the old Märklin transformers.
MX630 plug configurations:
9 highly flexible wires (120mm) for pick-up, motor and 4 function outputs. Solder
pads for 2 additional logic level outputs, servo outputs or SUSI.
MX630 with 8-pin plug as per NEM652 on 70mm wires.
MX630 with 6-pin plug as per NEM651 on 70mm wires.
MX630 with 16-pin PluX connector, mounted on circuit board.
Out of production since December of 2012; replaced by MX634.
28 x 15.5 x 4mm Non-Sound - 1.6A - 8 Fu-Outputs - 2 Servos - SUSI
High output decoder, with built-in energy storage circuitry.
TYPICAL APPLICATON: HO, O and similar gauge, especially for vehicles with
low-voltage bulbs (1.5 or 5V).
MX632 plug configurations:
11 highly flexible wires (120mm) for pick-up, motor and 4 function outputs. Sol-
der pads for 4 additional logic level outputs, servo outputs or SUSI.
MX632 with 8-pin plug as per NEM652 on 70mm wires.
MX632 with 21-pin “MTC“ plug mounted on decoder board.
As MX631D but for Märklin, Trix or similar; FO3, FO4 as logic level outputs.
Decoders with low voltage supply for function outputs:
...V = 1.5V, ...W = 5V, ...VD or ...WD = with 21-pin plug.
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