Overview
The SN74VMEH22501ADGGR is a high-performance electronic component produced by Texas Instruments. It is an 8-bit universal bus transceiver with two integral 1-bit three-wire bus transceivers, designed to provide a high-speed interface between cards operating at LVTTL (Low-Voltage Transistor-Transistor Logic) logic levels and VME64, VME64x, or VME320 backplane topologies. This device is part of the Texas Instruments Widebus™ family and is optimized for use in various high-speed data transfer applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range (VCC) | -0.5 | 4.6 | V | |
| Input Voltage Range (VI) | -0.5 | 7 | V | |
| Output Current in Low State (B Port) | -100 | -50 | mA | |
| Output Current in High State (B Port) | 50 | 100 | mA | |
| Operating Temperature Range | -40 | 85 | °C | |
| Propagation Delay Time (tPLH, tPHL) | 5.6 | 8.9 | 9.1 | ns |
| Transition Time (tr, tf) | 8.9 | 9 | 10.8 | ns |
Key Features
- Member of the Texas Instruments Widebus™ family
- ESD Protection exceeds JESD 22 standards (2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model)
- UBT™ transceiver combines D-type latches and D-type flip-flops for transparent, latched, or clocked modes of operation
- OEC™ circuitry improves signal integrity and reduces electromagnetic interference (EMI)
- Compliant with VME64, 2eVME, and 2eSST protocols
- Bus transceiver with split LVTTL port providing a feedback path for control and diagnostics monitoring
- I/O interfaces are 5-V tolerant
- High-drive capability (–48 mA/64 mA) on B-port outputs and (–12 mA/12 mA) on Y and A-port outputs
- Live-insertion support with Ioff, power-up 3-state, and BIAS VCC
- Bus hold on 3A-port data inputs and 26-Ω equivalent series resistor on 3A ports and Y outputs
- Flow-through architecture facilitates printed circuit board layout
- Distributed VCC and GND pins minimize high-speed switching noise
Applications
The SN74VMEH22501ADGGR is designed for use in high-speed data transfer applications, particularly in environments requiring interface between cards operating at LVTTL logic levels and VME64, VME64x, or VME320 backplane topologies. This includes:
- VME (VersaModule Eurocard) systems
- High-speed data acquisition and processing systems
- Industrial control and automation systems
- Telecommunication and networking equipment
- Embedded systems requiring high-speed bus transceivers
Q & A
- What is the primary function of the SN74VMEH22501ADGGR?
The primary function is to provide a high-speed interface between cards operating at LVTTL logic levels and VME64, VME64x, or VME320 backplane topologies.
- What are the operating temperature ranges for this device?
The operating temperature range is from -40°C to 85°C.
- Does the SN74VMEH22501ADGGR support live insertion?
- What is the ESD protection level of this device?
The device has ESD protection that exceeds JESD 22 standards (2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model).
- What are the typical propagation delay times for this transceiver?
The typical propagation delay times (tPLH, tPHL) are around 8.9 ns.
- Is the SN74VMEH22501ADGGR compatible with other VME protocols?
- What is the significance of the OEC™ circuitry in this device?
The OEC™ circuitry improves signal integrity and reduces electromagnetic interference (EMI).
- What are the output current capabilities of the B-port outputs?
The B-port outputs have a high-drive capability of –48 mA/64 mA.
- Does the device support bus hold on data inputs?
- What is the flow-through architecture beneficial for?
The flow-through architecture facilitates printed circuit board layout.
