Robust 12 port deterministic Ethernet switch for critical real-time applications

Future-proof 3U VPX Vita 46.0 form factor with conduction cooling

Secure partitioning between three traffic classes (time-triggered, rate-constrained and standard Ethernet traffic)

24 Gbit/s full wire-speed performance

Built-in management module

Enables fault-tolerant high-speed data communication backbones in/on vehicles with > 80 % effective bandwidth


The LB-IPC Switch-MIL technology enables hard real-time operation in safety-critical distributed systems based on Ethernet networks. LB-IPC MIL switches and end systems maintain the hard real-time data communication and take care of robust partitioning among standard Ethernet, rate-constrained and time-triggered Ethernet traffic. High-priority time-triggered messages are routed through the switch according to a predefined schedule with fixed latency and a transmission jitter in the submicrosecond range. Rate-constrained messages are routed and policed according to their guaranteed bandwidth. All other Ethernet messages are forwarded when bandwidth is available.

Key Features

12 x 1 Gbit/s full-duplex Ethernet via rear I/O (1000 Base-T)
24 Gbit/s cross-sectional bandwidth (12 x full-duplex Ethernet links)
1.5 Mbit on-chip memory
256 Mbit Flash memory for storing the switch configuration
TTEthernet implementation supports up to three redundant channel setups


12 ports running at 1 Gbit/s full duplex
8 sub schedules
16 clock sync masters
4096 virtual links
256 shared BAGs
Store-and-forward switch architecture
Manageable via network (configuration data download, diagnosis data queries, scheduled diagnosis status) through standard Ethernet frames

Related Products

TTEPMC Card Rugged for deterministic end systems
TTELoad: GUI and batch tool for downloading switch configurations
TTEBuild: Allows creation of a binary device configuration

Supported Standards

IEEE 802.3-2005 (switching, flow control)
SAE AS6802 (TTEthernet draft)
ARINC 664 part 7 (layer 2 switching/policing)
IEEE 1588 (transparent clock support)

Physical Specifications

3U VPX form factor
Rugged conduction-cooled
VITA 46.0, proposed pinout VITA 46.20 resp. VITA 65 SLT3-SWH-2F12T-14.4.8
Size: 160 x 115 x 30 (in mm)
Weight: approx. 600 g
Power consumption: < 19 W typ.

Environmental Operating Ranges

Operational temperature: -40 °C to +70 °C
Storage temperature: -55 °C to +125 °C
Operating/non-operating humidity: Humidity level from 0 to 95 % condensing
Vibration sine: 10 g peak, 15 to 2k Hz
Vibration random 0.1 g2/Hz, 15 to 2k Hz


DO-254 Certification package for the TTEthernet switch controller chip IP available
TTEVerify: A qualified software tool for production programs for automated device configuration verification (planned)