Specifications
| Type | Description |
|---|---|
| Part Number | TLC551 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | D SOIC, DB SSOP, P PDIP, PW TSSOP, Y small chip form; D/DB/P/PW top-view 8-pin package; chip thickness 15 mil typical, bonding pads 4 x 4 mil minimum |
| Supply Voltage Recommended | 1 to 15 V; recommended operating conditions |
| Supply Voltage Absolute Maximum | 18 V; all voltage values with respect to GND |
| Input Voltage Range Absolute Maximum | -0.3 V to VDD; any input |
| Sink Current Absolute Maximum | 150 mA; discharge or output |
| Output Source Current Absolute Maximum | 15 mA; output IO |
| Operating Free-Air Temperature Range | 0 to 70 °C; TLC551C characterized operating range |
| Storage Temperature Range | -65 to 150 °C; absolute maximum ratings |
| Lead Temperature | 260 °C; 1.6 mm from case for 10 seconds |
| ESD Protection | Exceeds 2000 V; MIL-STD-883C, Method 3015.2 |
| Maximum Operating Frequency | Up to 2 MHz; general device description |
| Astable Mode Maximum Frequency | 1.2 MHz min, 1.8 MHz typ; VDD=5 V, TA=25°C, RA=470 ohm, RB=200 ohm, CT=200 pF |
| Typical Power Consumption | 1 mW typ; VDD=5 V |
| Output Sink Current Capability | 100 mA typ; CMOS output capability |
| Output Source Current Capability | 10 mA typ; CMOS output capability |
| Threshold Voltage at VDD=1 V | 0.475 V min, 0.67 V typ, 0.85 V max at 25°C; 0.45 V min, 0.875 V max full range |
| Trigger Voltage at VDD=1 V | 0.15 V min, 0.33 V typ, 0.425 V max at 25°C; 0.1 V min, 0.45 V max full range |
| Reset Voltage at VDD=1 V | 0.4 V min, 0.7 V typ, 1 V max at 25°C; 0.3 V min, 1 V max full range |
| Supply Current at VDD=1 V | 15 µA min, 100 µA typ, 150 µA max; THRES connected directly to DISCH or TRIG |
| Threshold Voltage at VDD=2 V | 0.95 V min, 1.33 V typ, 1.65 V max at 25°C; 0.85 V min, 1.75 V max full range |
| Trigger Voltage at VDD=2 V | 0.4 V min, 0.67 V typ, 0.95 V max at 25°C; 0.3 V min, 1.05 V max full range |
| High-Level Output Voltage at VDD=2 V | 1.5 V min, 1.9 V typ at 25°C; 1.5 V min full range; IOH=-300 µA |
| Low-Level Output Voltage at VDD=2 V | 0.07 V typ, 0.3 V max at 25°C; 0.35 V max full range; IOL=1 mA |
| Supply Current at VDD=2 V | 65 µA min, 250 µA typ, 400 µA max; THRES connected directly to DISCH or TRIG |
| Threshold Voltage at VDD=5 V | 2.8 V min, 3.3 V typ, 3.8 V max at 25°C; 2.7 V min, 3.9 V max full range |
| Trigger Voltage at VDD=5 V | 1.36 V min, 1.66 V typ, 1.96 V max at 25°C; 1.26 V min, 2.06 V max full range |
| Reset Voltage at VDD=5 V | 0.4 V min, 1.1 V typ, 1.5 V max at 25°C; 0.3 V min, 1.8 V max full range |
| Discharge Switch On-State Voltage at VDD=5 V | 0.14 V typ, 0.5 V max at 25°C; 0.6 V max full range; IOL=10 mA |
| High-Level Output Voltage at VDD=5 V | 4.1 V min, 4.8 V typ at 25°C; 4.1 V min full range; IOH=-1 mA |
| Low-Level Output Voltage at VDD=5 V | 0.21 V typ, 0.4 V max at 25°C; 0.5 V max full range; IOL=8 mA |
| Supply Current at VDD=5 V | 170 µA min, 350 µA typ, 500 µA max; THRES connected directly to DISCH or TRIG |
| Threshold Voltage at VDD=15 V | 9.45 V min, 10.55 V max at 25°C; 9.35 V min, 10.65 V max full range |
| Trigger Voltage at VDD=15 V | 4.65 V min, 5 V typ, 5.35 V max at 25°C; 4.55 V min, 5.45 V max full range |
| Discharge Switch On-State Voltage at VDD=15 V | 0.77 V typ, 1.7 V max at 25°C; 1.8 V max full range; IOL=100 mA |
| High-Level Output Voltage at VDD=15 V, IOH=-10 mA | 12.5 V min, 14.2 V typ at 25°C; 12.5 V min full range |
| High-Level Output Voltage at VDD=15 V, IOH=-5 mA | 13.5 V min, 14.6 V typ at 25°C; 13.5 V min full range |
| High-Level Output Voltage at VDD=15 V, IOH=-1 mA | 14.2 V min, 14.9 V typ at 25°C; 14.2 V min full range |
| Low-Level Output Voltage at VDD=15 V | 1.28 V typ, 3.2 V max at 25°C; 3.6 V max full range; IOL=100 mA |
| Supply Current at VDD=15 V | 360 µA min, 600 µA typ, 800 µA max; THRES connected directly to DISCH or TRIG |
| Threshold Current | 10 pA typ at 25°C, 75 pA max at 70°C; VDD=1 V, 2 V, 5 V, or 15 V |
| Trigger Current | 10 pA typ at 25°C, 75 pA max at 70°C; VDD=1 V, 2 V, 5 V, or 15 V |
| Reset Current | 10 pA typ at 25°C, 75 pA max at 70°C; VDD=1 V, 2 V, 5 V, or 15 V |
| Control Voltage Open Circuit | 66.7% of supply voltage; TA=70°C |
| Initial Timing Interval Error | 1% typ, 3% max; VDD=5 V to 15 V, RA=RB=1 kohm to 100 kohm, CT=0.1 µF, TA=25°C |
| Supply Voltage Sensitivity Of Timing Interval | 0.1%/V typ, 0.5%/V max; VDD=5 V, TA=25°C, CT=0.1 µF |
| Output Pulse Rise Time | 20 ns typ, 75 ns max; VDD=5 V, TA=25°C, RL=10 Mohm, CL=10 pF |
| Output Pulse Fall Time | 15 ns typ, 60 ns max; VDD=5 V, TA=25°C, RL=10 Mohm, CL=10 pF |
| Function Table Reset Low | Output low, discharge switch on; RESET voltage below minimum; trigger and threshold irrelevant |
| Function Table Trigger Active | Output high, discharge switch off; RESET above maximum, TRIGGER below minimum, threshold irrelevant |
| Function Table Threshold Active | Output low, discharge switch on; RESET above maximum, TRIGGER above maximum, THRESHOLD above maximum |
| Pinout | 1=GND, 2=TRIG, 3=OUT, 4=RESET, 5=CONT, 6=THRES, 7=DISCH, 8=VDD; D, DB, P, or PW package top view |
| Datasheet Status | request_only |
Product Overview
The TLC551 is a Texas Instruments LinCMOS timer IC in the Signal_Chain category. It is specified for a recommended 1 to 15 V supply range, with absolute maximum ratings of 18 V supply voltage, -0.3 V to VDD on any input, 150 mA discharge or output sink current, and 15 mA output source current.
Key Features
- Recommended 1 to 15 V operating supply range
- 18 V absolute maximum supply rating
- Operates up to 2 MHz in timer applications
- Astable mode specified to 1.8 MHz typical
- 1 mW typical power consumption at 5 V
- 100 mA typical CMOS output sink capability
- 10 mA typical CMOS output source capability
- ESD protection exceeds 2000 V by MIL-STD-883C
- Threshold, trigger, and reset currents are 10 pA typical
- Output rise time is 20 ns typical at 5 V
- Output fall time is 15 ns typical at 5 V
- D, DB, P, PW, and Y package forms
Typical Applications
- Astable timing circuits
- Pulse output generation
- Low-voltage timer designs
- Reset-controlled timing functions
- Threshold-triggered switching circuits
- CMOS discharge switch control
- Timing intervals from external RA, RB, and CT
Procurement Notes
When requesting a quote for TLC551, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What supply range is specified for the TLC551?
The TLC551 has a recommended operating supply voltage range of 1 to 15 V. Its absolute maximum supply voltage is 18 V, with voltage ratings stated with respect to GND.
What output current capability does the TLC551 provide?
The TLC551 CMOS output capability is specified as 100 mA typical sink current and 10 mA typical source current. Absolute maximum ratings list 150 mA for discharge or output sink current and 15 mA for output source current.
Which packages are listed for the TLC551?
Package options include D SOIC, DB SSOP, P PDIP, PW TSSOP, and Y small chip form. The D, DB, P, and PW versions use an 8-pin top-view pinout.
How does reset affect TLC551 output state?
When RESET voltage is below the specified minimum, the function table states that the output is low and the discharge switch is on. In that reset-low state, trigger and threshold inputs are irrelevant.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 7, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.