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MAX14830
Quad Serial UART with 128-Word FIFOs
Industry's First Quad SPI/I²C UART
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Status
Active: In Production.
Description
The MAX14830 is an advanced quad universal asynchronous receiver-transmitter (UART), each UART having 128 words of receive and transmit first-in/first-out (FIFO) and a high-speed serial peripheral interface (SPI) or I²C controller interface. A PLL and fractional baud-rate generators allow a high degree of flexibility in baud-rate programming and reference clock selection.
Each of the four UARTs is selected by in-band SPI/I²C addressing. Logic-level translation on the transceiver and controller interfaces allows ease of interfacing to microcontrollers, FPGAs, and transceivers that are powered by differing supply voltages.
Extensive features simplify transceiver control in half-duplex communication applications. The MAX14830 features the ability to synchronize the start of individual UART's transmission by SPI-based triggering. On-board timers allow programming of delays between transmitters as well as clock generation on GPIOs.
The 128-word FIFOs have advanced FIFO control reducing host processor data flow management.
The MAX14830 is available in a 48-pin TQFN (7mm x 7mm) package and is specified to operate over the extended -40°C to +85°C temperature range.
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Data Sheet
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An evaluation kit is available: MAX14830EVKIT
Key Features
- SPI Up to 26MHz Clock Rate
- Fast-Mode Plus (Fm+) I²C Interface Up to 1MHz
- 128-Word Transmit and Receive FIFOs Per UART
- 6Mbaud (max) Data Rate in 16x Sampling Mode
- 12/24Mbaud (max) Data Rate in 2x/4x Rate Modes
- Fractional Baud-Rate Generators, Predivider, and Phase-Locked Loop (PLL)
- Transmitter Synchronization Through SPI Commands
- Four Timers Routed to GPIOs
- Automatic Hardware Flow Control Using Active-Low RTS_ and Active-Low CTS_ Outputs and Inputs
- Automatic Software Flow Control (XON/XOFF)
- Auto Transceiver Direction Control
- Programmable Setup and Hold Times for Transceiver Control
- Auto Transmitter Disable
- Half-Duplex Echo Suppression
- Special Character Detection
- 9-Bit Multidrop Mode Address Detection and Filtering
- SIR- and MIR-Compliant IrDA® Encoder/Decoders
- 16 Flexible GPIOs with 20mA Drive Capability
- +2.35V to +3.6V Supply Range
- Logic-Level Translation Down to 1.61V on Controller and Transceiver Interfaces
- Small TQFN (7mm x 7mm) Package
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Applications/Uses
- Airplane Communication Buses
- Automotive Infotainment Systems
- Industrial Control Systems
- IO-Link Master Controllers
- Medical Systems
- Point-of-Sales Systems
- Programmable Logic Controllers (PLC)
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Key Specifications:
| SPI/Microwire-Compatible UARTs |
| Part Number |
µP I/F |
Channels |
ICC
(mA) |
VSUPPLY
(V) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
Budgetary Price |
| typ |
max w/pins |
See Notes |
| MAX14830 |
SPI and I2C Compatible |
4 |
0.5 |
2.35 to 3.6 |
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50.4 |
-40 to +85 |
$9.53 @1k |
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See All SPI/Microwire-Compatible UARTs (8)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX14830ETM+
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Active |
TQFN;48 pin;50.4 mm²
Outline Drawing:21-0144 (PDF)
Land Pattern: 90-0129 (PDF)
Use pkgcode/variation: T4877+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14830ETM+T
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Active |
TQFN;48 pin;50.4 mm²
Outline Drawing:21-0144 (PDF)
Land Pattern: 90-0129 (PDF)
Use pkgcode/variation: T4877+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-5547
Rev 2;
2011-10-21
This page last modified: 2011-11-30
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