My Inquiry
My Account
Texas Instruments TLC7733MPWREP
- Part No.:
- TLC7733MPWREP
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC7733MPWREP.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,545
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC7733MPWREP from Texas Instruments is a micropower supply voltage supervisor IC designed for precision reset control in microcomputer and microprocessor systems. It features a fixed 2.93 V sense threshold (±70 mV hysteresis), operates from 2 V to 6 V, delivers totem-pole RESET/RESET outputs, and supports power-down control for static RAM with battery backup in aerospace-grade applications.
For engineers reviewing the TLC7733MPWREP datasheet, TLC7733MPWREP pinout, TLC7733MPWREP application, or TLC7733MPWREP equivalent, key selection criteria include its -55°C to 125°C extended temperature range, programmable delay via external capacitor, defined RESET assertion from VDD ≥1 V, and compatibility with MIL-PRF-38535 Class V / QML-V flow per V62/04604-06XE.
Technical Context
The TLC7733MPWREP implements a precision voltage-sensing comparator with temperature-compensated internal reference and hysteresis to prevent chatter during threshold crossing. Its dual active-high/active-low RESET outputs are driven by totem-pole logic, eliminating need for external pull resistors.
Control logic interprets RESIN and CONTROL inputs to configure reset polarity and enable power-down memory retention mode. Delay timing is externally set via CT (td = 2.1×10⁴ × CT), with typical delay of 2.1 ms at 100 nF, supporting reliable system initialization across wide temperature and supply variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sense Threshold | 2.93 V nominal (2.855–3.03 V over -55°C to 125°C); ensures stable reset activation for 3.3 V rail monitoring |
| Hysteresis | 70 mV; prevents oscillation during slow-rising or noisy supply conditions |
| Supply Range | 2 V to 6 V; supports operation across 2.5 V, 3.3 V, and 5 V systems without level shifting |
| Reset Assertion Voltage | VDD ≥1 V; guarantees defined output state during brown-in/brown-out transitions |
| Supply Current | 9–18 μA (typ. 16 μA); enables ultra-low-power operation in battery-backed systems |
| Delay Timing | Programmable via CT; td = 2.1×10⁴ × CT (e.g., 2.1 ms with 100 nF) |
| Operating Temp | -55°C to 125°C; qualified for extended-life military/aerospace deployments |
Pinout & Package
TSSOP-8 (PW) package, 3.0 mm × 4.4 mm, 1.2 mm max height, lead-free NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESIN | Reset Input Enable | Active-low input that disables internal reset generation when pulled low; used for manual reset override |
| 2 - CONTROL | Memory Power-Down Control | Configures RESET polarity and enables automatic CS deactivation for battery-backed SRAM during power loss |
| 3 - SENSE | Voltage Monitoring Input | Connects to monitored rail; comparator triggers reset when voltage falls below 2.93 V threshold |
| 4 - GND | Ground Reference | Analog/digital common return; must be low-impedance path to minimize noise coupling into threshold detection |
| 5 - VDD | Power Supply Input | Primary supply for internal circuitry; powers comparator, timer, and output drivers |
| 6 - CT | Timing Capacitor Connection | External capacitor sets reset timeout duration; value directly determines delay time (td = 2.1×10⁴ × CT) |
| 7 - RESET | Active-Low Reset Output | Open-drain/totem-pole output asserted low during reset condition; drives microcontroller /MR or processor RESET |
| 8 - RESET | Active-High Reset Output | Complementary to pin 7; provides active-high signal for logic families requiring high-asserted reset |
Key Features
| Feature | Design Value |
|---|---|
| Extended Temperature Range | Qualified from -55°C to 125°C per MIL-PRF-38535 Class V, enabling deployment in space, avionics, and downhole systems |
| Power-On Reset Generator | Asserts RESET as soon as VDD reaches 1 V, ensuring deterministic boot before core logic becomes operational |
| Static RAM Power-Down Support | CONTROL pin integration allows automatic chip-select disable during power failure, preserving data in battery-backed memory |
| Precision Threshold with Hysteresis | 2.93 V ±2.5% threshold with 70 mV hysteresis eliminates false resets caused by supply ripple or transient noise |
| Low Quiescent Current | 16 μA typical supply current extends battery life in always-on monitoring circuits and remote sensors |
Applications
| Aerospace Onboard Computer Reset | Avionics Power Sequencing |
|---|---|
Use Scenario: Supervising 3.3 V core supply in radiation-tolerant flight computers where undervoltage must trigger immediate processor halt and safe state entry. IC Role / Device Role / Timing Role: Primary reset controller asserting both active-high and active-low signals to CPU, FPGA, and watchdog peripherals simultaneously. Use Value: Guaranteed reset assertion at VDD ≥1 V and -55°C to 125°C operation ensure reliability under launch vibration, thermal cycling, and partial power loss. | Use Scenario: Coordinating startup sequence of multiple voltage rails (5 V, 3.3 V, 1.8 V) in cockpit display units with strict ramp-time and sequencing requirements. IC Role / Device Role / Timing Role: Monitors master 5 V rail and generates timed reset pulse to downstream supervisors via CT-programmed delay. Use Value: Programmable delay (2.1 ms with 100 nF) aligns reset release with slowest rail stabilization, preventing race conditions in multi-supply systems. |
| Downhole Telemetry Module | Military Vehicle Data Logger |
Use Scenario: Maintaining data integrity in oil/gas well logging tools exposed to >125°C ambient and intermittent battery power. IC Role / Device Role / Timing Role: Voltage supervisor and SRAM power-down enabler using CONTROL pin to disconnect memory CS during brownout. Use Value: -55°C to 125°C rating and battery-backed memory retention support preserve critical sensor logs during power interruption. | Use Scenario: Ensuring deterministic boot and fault recovery in ruggedized vehicle black box recorders operating in extreme cold (-40°C) and engine bay heat. IC Role / Device Role / Timing Role: Dual-output reset generator interfacing directly with ARM Cortex-M7 MCU and external SPI flash memory. Use Value: Totem-pole outputs eliminate external pull resistors, reducing BOM count and PCB area in space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7733QPWREP | Same electrical specs but rated for -40°C to 125°C; different temperature screening and traceability documentation | Approved for commercial aerospace programs requiring QML-Q certification instead of QML-V | Select when program mandates QML-Q qualification and full -40°C lower limit suffices |
| TPS3808G33DBVR | Fixed 3.3 V threshold, 350 ms factory-fixed delay, 1.5 μA quiescent current, no CONTROL pin | Lacks SRAM power-down control; suited for simpler reset-only applications without battery backup | Choose for ultra-low-power, single-threshold, fixed-delay use cases where memory retention is not required |
Compared with TLC7733QPWREP, the TLC7733MPWREP offers broader temperature coverage (-55°C vs. -40°C) and QML-V traceability for mission-critical hardware; versus TPS3808G33DBVR, it trades lower IQ for programmable delay and memory-control capability essential in battery-backed systems.
Availability
TLC7733MPWREP is available at Aetrix Electronics and suitable for aerospace avionics, downhole instrumentation, and military vehicle electronics requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TLC7733MPWREP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and defense markets.
The TLC77xx-EP family was engineered specifically for extended-life, high-reliability applications in defense, aerospace, and medical systems, with enhanced plastic packaging and controlled baseline manufacturing per MIL-PRF-38535.
FAQ
What is the exact sense threshold voltage of the TLC7733MPWREP and how does it vary with temperature?
The TLC7733MPWREP has a nominal sense threshold of 2.93 V, specified from 2.855 V to 3.03 V over its full -55°C to 125°C operating range. This 70 mV hysteresis band ensures stable switching without chatter. The device uses an internal temperature-compensated voltage reference, so threshold drift is minimized across temperature extremes-verified in TI's Figure 4 "Normalized Input Threshold Voltage vs Temperature" showing <0.5% variation from -55°C to 125°C. This stability makes the TLC7733MPWREP suitable for precision 3.3 V rail monitoring in harsh environments.
Does the TLC7733MPWREP require external pull-up resistors on its RESET and RESET outputs?
No, the TLC7733MPWREP does not require external pull-up resistors because both RESET and RESET outputs are configured as totem-pole drivers-not open-drain. As confirmed in the Functional Block Diagram and Electrical Characteristics table, VOH and VOL are specified under load (e.g., VOH = 4.3 V at IOH = –20 mA, VDD = 4.5 V), indicating active drive capability. This eliminates BOM cost and board space associated with external resistors and improves noise immunity in high-density layouts where the TLC7733MPWREP is deployed.
How is the reset delay time programmed on the TLC7733MPWREP, and what is the formula?
The reset delay time (td) on the TLC7733MPWREP is programmed using an external capacitor connected to the CT pin (pin 6). The relationship is given by td = 2.1 × 10⁴ × CT, where CT is in farads and td is in seconds. For example, a 100 nF capacitor yields td ≈ 2.1 ms. This formula is validated in the datasheet's timing diagram and Switching Characteristics table, which lists td = 2.1 ms (typ.) at CT = 100 nF. The TLC7733MPWREP uses this RC-based timing to ensure sufficient hold time after supply stabilization before releasing reset-critical for reliable microprocessor initialization.
What is the role of the CONTROL pin on the TLC7733MPWREP, and how does it affect RESET polarity?
The CONTROL pin (pin 2) on the TLC7733MPWREP configures RESET polarity and enables SRAM power-down functionality. When CONTROL is tied to GND, RESET becomes active-high while RESET remains active-low-allowing direct interface with processors requiring either polarity. More critically, when CONTROL is driven by the microprocessor's memory bank select signal (e.g., CSH1), the TLC7733MPWREP automatically disables the SRAM chip select during power loss, preserving data in battery-backed memory. This dual-role function is explicitly detailed in the Application Information section and Function Table.
Is the TLC7733MPWREP pin-compatible with other members of the TLC77xx-EP family, such as TLC7705MPWREP or TLC7701MPWREP?
Yes, the TLC7733MPWREP is pin-compatible with TLC7705MPWREP and TLC7701MPWREP in the same TSSOP-8 (PW) package, sharing identical pinout, footprint, and electrical interface. However, their sense thresholds differ: TLC7701MPWREP = 1.1 V, TLC7705MPWREP = 4.5 V, and TLC7733MPWREP = 2.93 V. All three share identical timing, output structure, CONTROL/RESIN logic, and temperature rating. This allows drop-in replacement for threshold adjustment without layout change-provided the application's voltage monitoring requirement matches the selected variant's fixed threshold.
TLC7733MPWREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High/Active Low
- Reset Timeout:
- 1.1ms Minimum
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
TLC7733MPWREP FAQ
1.How can I place an order for TLC7733MPWREP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7733MPWREP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLC7733MPWREP reliable?
The price and inventory of TLC7733MPWREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7733MPWREP is usually 5 days.
3.What payment methods are accepted for TLC7733MPWREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC7733MPWREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC7733MPWREP?
TLC7733MPWREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7733MPWREP order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLC7733MPWREP?
For technical support, including TLC7733MPWREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7733MPWREP requirements.
6.How does Aetrix verify that TLC7733MPWREP is sourced from the original manufacturer or authorized distributors?
All TLC7733MPWREP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLC7733MPWREP meets industry standards.
7.What is the process for return or replacement of TLC7733MPWREP?
All TLC7733MPWREP units undergo pre-shipment inspection (PSI). If there is an issue with TLC7733MPWREP, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLC7733MPWREP part is unused and in its original packaging.
Return procedure for TLC7733MPWREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC7733MPWREP Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
