My Inquiry
My Account
Texas Instruments TLC7703IDG4
- Part No.:
- TLC7703IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC7703IDG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,144
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC7703IDG4 from Texas Instruments is a micropower supply voltage supervisor IC designed for reset control in microcomputer and microprocessor systems. It features a fixed 2.63 V negative-going input threshold voltage at SENSE, programmable delay time via external capacitor (td = 2.1 × 10⁴ × CT), defined RESET output down to VDD ≥ 1 V, and operates across 2 V to 6 V supply range with ≤16 µA supply current.
For engineers reviewing the TLC7703IDG4 datasheet, TLC7703IDG4 pinout, TLC7703IDG4 application, or TLC7703IDG4 equivalent, this device is selected for precision undervoltage monitoring, power-on reset generation, and battery-backed static RAM power-down control in medical imaging, industrial controllers, and automotive body electronics where low quiescent current and wide temperature operation are critical.
Technical Context
The TLC7703IDG4 implements a precision voltage sensor with temperature-compensated internal reference and built-in hysteresis (70 mV) to prevent oscillation during threshold crossing. Its power-on reset generator asserts RESET when VDD reaches 1 V, then transitions to undervoltage supervision once VDD ≥ 2 V is established.
It supports active-high RESET output when CONTROL is grounded and integrates logic for automatic chip-select disable of static RAM during power failure-requiring battery-supplied VDD. Delay timing is externally set via capacitor on CT pin, with typical td = 2.1 ms at CT = 100 nF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.63 V (fixed negative-going SENSE threshold; ensures reliable detection of supply drop below nominal rail) |
| Supply Voltage Range | 2 V to 6 V (supports single-cell Li-ion, 3.3 V, and 5 V systems without external regulation) |
| Supply Current | ≤16 µA (enables multi-year battery life in always-on monitoring applications) |
| Reset Output Behavior | Defined RESET assertion from VDD ≥ 1 V (guarantees early system initialization before full rail stabilization) |
| Delay Time Formula | td = 2.1 × 10⁴ × CT (allows precise, user-adjustable reset hold time from ~1 ms to seconds via capacitor selection) |
| Operating Temperature | –40°C to 85°C (qualified for commercial/industrial ambient environments) |
| Hysteresis | 70 mV (prevents chatter during slow or noisy supply recovery) |
Pinout & Package
The TLC7703IDG4 is housed in an 8-pin DRB (3×3 mm SON) package with wettable flanks, optimized for automated optical inspection and high-reliability PCB assembly. This non-magnetic variant is specified for medical imaging equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Power source for internal reference, comparator, and output driver; must be bypassed with 0.1 µF ceramic capacitor |
| GND | Ground reference | Return path for all internal circuits and output loads; requires low-impedance connection to minimize noise coupling |
| SENSE | Voltage monitor input | Connects to regulated rail or point-of-load; triggers RESET when voltage falls below 2.63 V with 70 mV hysteresis |
| CONTROL | Output polarity control | Grounding sets RESET as active-high; floating or VDD ties it to active-low configuration per functional table |
| RESIN | Manual reset input | Active-low asynchronous reset override; pulls RESET low when asserted regardless of SENSE state |
| RESET | Active-low reset output | Open-drain compatible output; sinks up to 10 mA; requires external pull-up for logic-level compatibility |
| RESET | Active-high reset output | Complementary to RESET; driven high when RESET is low; supports dual-signaling interface requirements |
| CT | Delay timing capacitor connection | External capacitor sets reset timeout duration; value directly determines hold time per td = 2.1 × 10⁴ × CT |
Key Features
| Feature | Design Value |
|---|---|
| Power-on reset generator | Asserts RESET at VDD ≥ 1 V-enables deterministic boot sequence before full rail stability |
| Programmable delay time | Adjustable hold time (1.1–4.2 ms typical) via external capacitor eliminates need for fixed-timing ICs or RC networks |
| Temperature-compensated reference | Stable 2.63 V threshold over –40°C to 85°C ensures consistent trip point across thermal environments |
| Static RAM power-down support | Integrated CONTROL logic enables automatic CS deactivation during brownout-preserves data in battery-backed memory |
| Micropower operation | 16 µA max supply current allows continuous monitoring in energy-constrained systems without compromising battery life |
Applications
| Medical Imaging Power Sequencing | Industrial PLC Controller Reset |
|---|---|
|
Use Scenario: MRI and CT scanner subsystems require sequenced power-up of analog front-ends, FPGAs, and ADCs to avoid latch-up or transient damage. IC Role / Device Role / Timing Role: TLC7703IDG4 monitors 3.3 V FPGA core rail and asserts RESET until stable, then holds for 2.1 ms to ensure configuration completion. Use Value: Prevents corrupted FPGA bitstreams by guaranteeing minimum reset pulse width independent of supply ramp rate. |
Use Scenario: Programmable logic controllers operate in harsh factory environments where 24 V DC supplies experience ripple and momentary dips. IC Role / Device Role / Timing Role: TLC7703IDG4 supervises the 5 V microcontroller supply and triggers controlled reboot upon undervoltage events. Use Value: Eliminates software lockups by forcing hardware reset before firmware enters undefined states during brownout. |
| Automotive Body Control Module | Battery-Powered Data Logger |
|
Use Scenario: BCMs manage door locks, lighting, and sensors powered from vehicle battery with wide voltage variation (9–16 V). IC Role / Device Role / Timing Role: TLC7703IDG4 monitors regulated 3.3 V domain derived from buck converter; uses CONTROL pin to enable active-high RESET for MCU compatibility. Use Value: Ensures MCU resets cleanly during cold-crank (battery dip to 6 V) without false triggering due to hysteresis. |
Use Scenario: Remote environmental sensors log data for months on coin-cell batteries and must survive intermittent solar charging cycles. IC Role / Device Role / Timing Role: TLC7703IDG4 supervises 3.0 V LDO output and disables flash memory write operations via RESET-driven chip select during low-voltage events. Use Value: Prevents flash corruption by halting writes before VDD drops below safe programming threshold-no firmware intervention required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7703QD | Same electrical specs but rated for –40°C to 125°C operating range; SOIC-8 package instead of DRB | Suitable for under-hood automotive or high-temp industrial use where extended temperature range is mandatory | Select TLC7703QD when ambient exceeds 85°C or SOIC-8 footprint is preferred over DRB's 3×3 mm area |
| TPS3808G33DBVR | Fixed 3.3 V threshold, 350 nA quiescent current, 200 ms factory-fixed delay; SOT-23-6 package | Ultra-low-power alternative with no external capacitor needed-but lacks programmable delay and dual RESET outputs | Choose TPS3808G33DBVR only if 3.3 V threshold suffices and sub-µA supply current outweighs flexibility and dual-output capability |
Compared with TLC7703QD, the TLC7703IDG4 offers identical functionality in a smaller, leadless DRB package suited for space-constrained designs, while TPS3808G33DBVR trades configurability for extreme power savings-making TLC7703IDG4 optimal for applications needing adjustable timing and robust dual-output signaling in compact layouts.
Availability
TLC7703IDG4 is available at Aetrix Electronics and suitable for medical imaging subsystems, industrial PLC controllers, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TLC7703IDG4 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 company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and high-reliability ICs.
The TLC77xx family was engineered specifically for precision supply monitoring and deterministic reset generation in resource-constrained microcontroller-based systems-emphasizing micropower operation, wide temperature tolerance, and flexible output configurations.
FAQ
What is the exact threshold voltage of the TLC7703IDG4?
The TLC7703IDG4 has a fixed negative-going input threshold voltage of 2.63 V at the SENSE pin, with ±70 mV hysteresis. This value is guaranteed across the full operating temperature range (–40°C to 85°C) and supply voltage (2 V to 6 V), as specified in the Electrical Characteristics table of the SLVS087M datasheet.
How does the TLC7703IDG4 generate its reset delay time?
The TLC7703IDG4 uses an external capacitor connected to the CT pin to set its reset delay time, calculated as td = 2.1 × 10⁴ × CT. For example, a 100 nF capacitor yields td ≈ 2.1 ms. This delay begins after SENSE voltage rises above threshold and ensures the system remains held in reset long enough for stable operation before release.
Can the TLC7703IDG4 drive a microcontroller's reset pin directly?
Yes-the TLC7703IDG4's RESET output is an open-drain driver capable of sinking up to 10 mA, making it compatible with standard CMOS and TTL reset inputs. An external pull-up resistor (typically 10 kΩ to VDD) is required. The complementary RESET output provides active-high signaling for MCUs requiring that polarity.
Does the TLC7703IDG4 support battery-backed static RAM power-down?
Yes-the TLC7703IDG4 includes dedicated CONTROL logic for static RAM power-down. When CONTROL is grounded and VDD is supplied by battery backup, the device automatically disables memory chip select during power loss, preserving data integrity without firmware involvement-per Figure 10 in the SLVS087M datasheet.
What is the package type and lead finish of the TLC7703IDG4?
The TLC7703IDG4 uses the DRB package: an 8-pin 3×3 mm SON (small-outline no-lead) with wettable flanks. Its lead finish is NiPdAu (nickel-palladium-gold), RoHS-compliant, and qualified for reflow per MSL Level-1 (260°C peak). The package marking is "7703I" per TI's Package Option Addendum.
TLC7703IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High/Active Low
- Reset Timeout:
- 1.1ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC7703IDG4 FAQ
1.How can I place an order for TLC7703IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC7703IDG4 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 TLC7703IDG4 reliable?
The price and inventory of TLC7703IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC7703IDG4 is usually 5 days.
3.What payment methods are accepted for TLC7703IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC7703IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC7703IDG4?
TLC7703IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC7703IDG4 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 TLC7703IDG4?
For technical support, including TLC7703IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC7703IDG4 requirements.
6.How does Aetrix verify that TLC7703IDG4 is sourced from the original manufacturer or authorized distributors?
All TLC7703IDG4 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 TLC7703IDG4 meets industry standards.
7.What is the process for return or replacement of TLC7703IDG4?
All TLC7703IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC7703IDG4, 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 TLC7703IDG4 part is unused and in its original packaging.
Return procedure for TLC7703IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC7703IDG4 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…
