Skip to main content
Texas Instruments TL7757ILPR — Discrete Semiconductors
Texas Instruments

TL7757ILPR Simple Reset/Power-On Reset, 4.55V Threshold

MPNTL7757ILPR
End of Life

Texas Instruments TL7757ILPR Simple Reset/Power-On Reset IC, Active Low Open Drain Output, 4.55V Threshold, 5µs Max Propagation Delay, -40°C to 85°C, TO-226-3 / TO-92-3 Formed Leads, Through Hole.

$0.94Ref. price · indicative, final on quote
TL7757ILPR datasheet
PackagingTO-226-3, TO-92-3 (TO-226AA) Formed Leads
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

TL7757ILPR Technical Specifications
ParameterValue
TypeSimple Reset/Power-On Reset
Mounting typeThrough Hole
Voltage - threshold4.55V
Number of voltages monitored1
Operating temperature-40°C ~ 85°C (TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout5µs Maximum Propagation Delay
CaseTO-226-3, TO-92-3 (TO-226AA) Formed Leads

Product details

Package and mounting — the through-hole reality

The TO-92-3 package with formed leads is a through-hole footprint. That means manual insertion or wave-solder assembly — not reflow. For a new high-density design, a surface-mount supervisor in SOT-23 or SC-70 would save board area and simplify assembly. But for a retrofit, a repair, or a BOM where the PCB already has a TO-92 footprint and wave-solder is the established process, this package is a direct drop-in. The formed leads match the standard TO-92 pinout: ground, reset output, and VDD from left to right when the flat face is toward you.

Temperature grade and operating environment

Rated for -40°C to 85°C ambient, the TL7757ILPR covers the industrial temperature range. That suits factory-floor controllers, outdoor telecom cabinets, HVAC systems, and instrumentation enclosures. It does not carry the extended -40°C to 125°C rating needed for under-hood automotive or downhole drilling — if that is your environment, look at the TLV803 family rated to 125°C.

Lifecycle and compliance

ROHS3 compliant, so it clears EU and other RoHS-restricted markets without exemption paperwork. The TL7757ILPR is a straightforward BOM line to maintain for the foreseeable production horizon.

Frequently asked questions

Is TL7757ILPR RoHS compliant?

Yes, it is ROHS3 compliant.

Does TL7757ILPR have a push-pull output?

No, the output is open drain or open collector. An external pull-up resistor is required to produce a valid logic level.

What is the equivalent of TL7757ILPR?

The closest functional peer in the same family is the TLV803EA29VDBZR, also a simple reset with active-low open-drain output. Key differences: the TLV803 is surface-mount (SOT-23), has a 130ms minimum reset timeout (vs 5µs propagation delay), and is rated to 125°C. It is not a direct pin-for-pin replacement due to the different package and timeout behaviour — evaluate the reset timing and footprint before substituting.

Is TL7757ILPR a direct replacement for MAX809?

The MAX809 typically has a push-pull output, while the TL7757ILPR has an open-drain output. They are not direct drop-in replacements unless the external pull-up is accounted for and the threshold voltage matches your rail. Check the MAX809 variant threshold — the TL7757ILPR is fixed at 4.55V for 5V monitoring.