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ZD Shifter SU Series

TTL ⇋ RS232 bidirectional level conversion · In-line communication monitoring

Level conversion is common in many electronic systems, but in the automotive field few products meet the need for bidirectional conversion between TTL and RS signals. ZD's own ZD Shifter SU series supports bidirectional level conversion for up to 8 TTL and 12 RS232 serial channels, connecting on-board TTL communication on vehicle controllers to a test PC.

8ch
TTL bidirectional conversion
12ch
RS232 serial ports
4 services
TTL level standards
12V
Direct vehicle power
ZD Shifter SU Series
ZD Shifter SU Series
Key Features

Key Features

01Bidirectional conversion + communication monitoring

Connect the device to a PC over USB to convert multiple TTL and RS levels while monitoring bidirectional data traffic.

02Full coverage of common TTL levels

Supports the TTL levels commonly used in the industry: 1.8 V / 2.5 V / 3.3 V / 5 V.

03On-board LED status indication

On-board LEDs show the operating state clearly.

04Two power options

Supports 5 V USB power on the desktop and direct 12 V power in vehicle applications.

05Automatic sleep and wake

Communication monitoring triggers automatic sleep and wake, avoiding battery drain.

06Multiple interface options + port detection

Several port configurations are available, supporting bidirectional signal transfer between up to 8 TTL and 12 RS232 channels. A port detection tool makes it easy to check port mapping. Compatible with Windows and Linux.

Applications

Applications

01
SU4

ZD Shifter SU4

Level conversion and in-line communication monitoring

Handles bidirectional signal transfer between up to 8 TTL and 4 RS232 channels, and can forward bidirectional traffic to the USB port. Connected to the Shifter over USB Type-C, the user's PC can view the live serial communication between the head unit and the data logger.

  • USB bidirectional communication: The PC communicates with the device bidirectionally over USB for serial debugging
Head-unit ECUOn-board TTL ×8
⇄
ZD ShifterBidirectional level conversion
⇄
RS232 devicesSerial ports ×4
⇅
User PCUSB Type-C · Live communication monitoring
Bidirectional signal transfer · Traffic visible in line
02
SU8

ZD Shifter SU8

Level conversion and in-line communication monitoring

Handles bidirectional signal transfer between up to 8 TTL and 8 RS232 channels, and can forward bidirectional traffic to the USB port. Connected to the Shifter over USB Type-C, the user's PC can view the live serial communication between the head unit and the data logger.

  • USB bidirectional communication: The PC communicates with the device bidirectionally over USB for serial debugging
Head-unit ECUOn-board TTL ×8
⇄
ZD ShifterBidirectional level conversion
⇄
RS232 devicesSerial ports ×8
⇅
User PCUSB Type-C · Live communication monitoring
Bidirectional signal transfer · Traffic visible in line
03
SU12

ZD Shifter SU12

Level conversion and in-line communication monitoring

Converts data across 8 TTL, 12 RS232, USB and other port types, and can forward bidirectional traffic to the USB port. Connected to the Shifter over USB Type-C, the user's PC can view the live serial communication between the head unit and the data logger.

  • USB bidirectional communication: The PC communicates bidirectionally over USB for both TTL and RS232, enabling serial debugging
Head-unit ECUOn-board TTL ×8
⇄
ZD ShifterBidirectional level conversion
⇄
RS232 devicesSerial ports ×12
⇅
User PCUSB Type-C · Live communication monitoring
Bidirectional signal transfer · Traffic visible in line
Specifications

Specifications

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ParameterZD Shifter SU4 / SU8 / SU12
Channel configurationsSU4: 4 TTL + 4 RS232; SU8: 8 TTL + 8 RS232; SU12: 8 TTL + 12 RS232
USB1 × Type-C 2.0
TTL levels1.8 V / 2.5 V / 3.3 V / 5 V
Power supplyVBAT 8V~24V DC / USB Type-C 5V
Power consumption0.5W
Temperature range-40℃ ~ 70℃
Sleep modeOptional, off by default; in sleep mode the device sleeps automatically after 30 seconds without a TTL signal
Wake modeOptional; wakes automatically on a TTL signal within 100 μs
Dimensions88 × 73 × 38 mm
Weight135 g
MaterialAluminium

* ZD products are continuously updated. Contact us for the latest specifications.

Get product support

For more information about the ZD Shifter SU series, please contact our technical team.