text.skipToContent text.skipToNavigation
warning This page may load slowly on Internet Explorer. Content on this page may load slowly on Internet Explorer. For a faster experience, please view in Chrome or Firefox.

UCC2946D ACTIVE

-40°C to +90°C, microprocessor supervisor with watchdog timer

Same as: UCC2946DG4   This part number is identical to the part number listed above. You can only order quantities of the part number listed above.

Inventory:

Pricing


Qty Price (USD)
1-99 4.437
100-249 3.888
250-999 2.726
1,000+ 2.197

Additional package qty | carrier options info-circle

custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 2,500 | LARGE T&R
Inventory
Qty | Price (USD) 1ku | 1.846 1-99 3.729 100-249 3.267 250-999 2.291 1,000+ 1.846

Quality information

RoHS Yes
REACH Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information info-circle

Information included:

  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
View or download

Export classification

  • US ECCN: EAR99

Packaging information

Package | Pins SOIC (D) | 8
Package qty | Carrier: 75 | TUBE
Operating temperature range (°C) -40 to 85
View TI packaging information

Features for the UCC2946

  • Fully Programmable Reset Threshold
  • Fully Programmable Reset Period
  • Fully Programmable Watchdog Period
  • 2% Accurate Reset Threshold
  • Input Voltage Down to 2 V
  • Input 18-µA Maximum Input Current
  • Reset Valid Down to 1 V

Description for the UCC2946

The UCCx946 is designed to provide accurate microprocessor supervision, including reset and watchdog functions. During power up, the device asserts a reset signal RES with VDD as low as 1 V. The reset signal remains asserted until the VDD voltage rises and remains above the reset threshold for the reset period. Both reset threshold and reset period are programmable by the user.

The UCCx946 is also resistant to glitches on the VDD line. Once RES has been deasserted, any drops below the threshold voltage need to be of certain time duration and voltage magnitude to generate a reset signal. These values are shown in Figure 1. An I/O line of the microprocessor may be tied to the watchdog input (WDI) for watchdog functions. If the I/O line is not toggled within a set watchdog period, programmable by the user, WDO is asserted. The watchdog function is disabled during reset conditions.

The UCCx946 is available in 8-pin SOIC(D), 8-pin PDIP (N) and 8-pin TSSOP(PW) packages to optimize board space.

Inventory:

Pricing


Qty Price (USD)
1-99 4.437
100-249 3.888
250-999 2.726
1,000+ 2.197

Additional package qty | carrier options info-circle

custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 2,500 | LARGE T&R
Inventory
Qty | Price (USD) 1ku | 1.846 1-99 3.729 100-249 3.267 250-999 2.291 1,000+ 1.846

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships  tube or tray  devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

Learn more

Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

Learn more