Product overview
Key Benefits
High-speed RS-485 communication
Up to 50 Mbps full‑duplex operation with 70 mV receiver hysteresis and up to 128 nodes for reliable data integrity
Robust protection and reliability
ntegrated fail‑safe receiver, hot‑swap support and bus ESD protection up to ±12 kV IEC61000-4-2 for harsh industrial environments
Space saving, low-power solution
DFN10 (3x3mm) package, 3 V to 5.5 V supply and low quiescent current for compact, energy-efficient RS-485 nodes
Description
The ST4E1250F is a low-power differential line transceiver for data transmission standard RS485 applications in full-duplex mode.
ST4E1250F operates up to 50 Mbps. It is ideal for multi-point applications in a constraint and difficult industrial environment. It is robust to ESD transients. In particular, the bus pins support ±12 kV IEC 61000-4-2 contact discharge. It features robust hot-swap capability while switching on and off, or during plug-in. The fail-safe receiver ensures a logic-high output when the inputs are shorted, open, or terminated bus. The high level of receiver hysteresis improves the noise rejection and the signal integrity.
The ST4E1250F is available in a small 3 x 3 mm DFN10 package and operates over a -40 °C to 125 °C temperature range.
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All features
- Meets or exceeds the requirements of the TIA/EIA-485A standard
- 3 V to 5.5 V supply voltage
- Differential output exceeds 2.1 V for PROFIBUS compatibility with 5 V supply
- High speed: up to 50 Mbps data rate
- Up to 128 bus nodes
- Receiver hysteresis of 70 mV
- Full-duplex topology
- Integrated protections
- Fail-safe receiver (bus open, idle, and shorted)
- Thermal shutdown protection
- Hot swap capability
- Bus I/O ESD protection
±12 kV IEC61000-4-2 contact discharge ±30 kV HBM ±4 kV IEC61000-4-4 fast transient burst
- Low quiescent current in shutdown mode
- -40 °C to +125 °C operating temperature
- Available in DFN10 industry standard
EDA Symbols, Footprints and 3D Models
STMicroelectronics - ST4E1250F
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| ST4E1250FIQT | Evaluation Product is under characterization. Limited Engineering samples available. EN | VDFPN 10 3x3x1.0 | Industrial | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 | |
ST4E1250FIQT
Package:
VDFPN 10 3x3x1.0Material Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Autoshutdown | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | ||||||||||||||
| ST4E1250FIQT | | | distributors No availability of distributors reported, please contact our sales office |
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ST4E1250FIQT Evaluation
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors