SN74LVC1G07DBVR - Open-Drain Buffer 1.65-5.5V SOT-23-5 | TI
MPN: SN74LVC1G07DBVR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.35 | $0.35 |
| 10 | $0.31 | $3.10 |
| 100 | $0.27 | $27.00 |
| 500 | $0.23 | $115.00 |
| 1,000 | $0.19 | $190.00 |
SN74LVC1G07DBVR Overview
An open-drain buffer is a logic element whose output transistor has no internal pull-up structure; the output can only actively pull LOW and relies on an external pull-up resistor to another voltage rail to go HIGH. In the voltage-regulation hierarchy of digital logic families, this places the SN74LVC1G07 among low-voltage CMOS (LVC) interface logic, one step above raw gates and one step below full bus transceivers. Open-drain outputs are the foundation of shared buses such as I2C, interrupt lines, and wired-OR / wired-AND logic networks.
Key features include support for 5 V VCC operation with input and open-drain output tolerating up to 5.5 V, a maximum propagation delay of 3.3 ns at 3.3 V, ultra-low power consumption with 10 uA maximum ICC, and Β±24 mA output drive capability at 3.3 V. The Ioff feature supports partial-power-down applications by preventing damaging backfeed currents when the device is unpowered.
Architecturally, the device combines a single CMOS input stage with a discrete NMOS pull-down output stage. Because the output floats high only through the external pull-up, multiple SN74LVC1G07 outputs can be tied together to implement active-low wired-OR or active-high wired-AND functions without contention. The wide 1.65 V to 5.5 V operating range allows true level-shifting: a 1.8 V logic signal can control a 5 V rail through the open-drain output.
Typical applications include I2C and SMBus bus buffering, open-drain interrupt or enable line fan-out, level shifting between mixed-voltage subsystems, LED and relay driver front-ends, and microcontroller GPIO expansion where multiple boards share a common pull-up rail.
Design consideration: the external pull-up resistor value is a trade-off - lower values improve edge speed and noise immunity but increase sink current; verify the resistor keeps the sink current below the 32 mA maximum rating.
This page synthesizes distributor pricing, drop-in cross-brand alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for SN74LVC1G07DBVR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with SN74LVC1G07DBVR (same form factor and footprint) β differing in Ioff Partial-Power-Down, MSL Level, Operating Temperature, Output Drive at 3.3 V, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SN74LVC1G07DBVT
β Drop-Inπ Reference alternative (not in catalog)
SN74LVC1G07DBVR
β Drop-Inβ In Stock
$0.19 / Unit
View Datasheet β74LVC1G07GM-115
β Drop-Inπ Reference alternative (not in catalog)
74LVC1G07W5-7
β Drop-Inπ Reference alternative (not in catalog)
SN74LVC1G07DCKR
β Drop-Inβ In Stock
$0.08 / Unit
View Datasheet βSN74LVC1G07DBVR Maximum Ratings & Electrical Characteristics
| Function | Single non-inverting buffer/driver |
| Output Type | Open drain |
| Supply Voltage Range | 1.65 V to 5.5 V |
| Max Input Voltage | 5.5 V |
| Max Open-Drain Output Voltage | 5.5 V |
| Max Sink Current | 32 mA |
| Output Drive at 3.3 V | Β±24 mA |
| Max Propagation Delay | 3.3 ns at 3.3 V |
| Max Quiescent Current ICC | 10 uA |
| Ioff Partial-Power-Down | Supported |
| Operating Temperature | -40C to +125C |
| Package | SOT-23-5 (DBV) SC-74A / SOT-753 |
| Mounting Type | Surface Mount |
| Channels | 1 Element, 1 Bit per Element |
| Polarity | Non-inverting |
| RoHS Status | Compliant |
| MSL Level | 1 |
SN74LVC1G07DBVR Pin Configuration
| Pin 1 | A β Data input |
| Pin 2 | GND β Ground |
| Pin 3 | Y β Open-drain output |
| Pin 4 | NC β Not connected (per datasheet) |
| Pin 5 | VCC β Power supply, 1.65 V to 5.5 V |
Typical Applications
SN74LVC1G07DBVR is suitable for 6 applications: I2C / SMBus Line Buffering, Mixed-Voltage Level Shifting, Wired-OR / Wired-AND Logic, Microcontroller GPIO Expansion and Interrupt Fan-out, LED and Low-Side Indicator Driving, Automotive and Industrial Digital Interfacing.
I2C / SMBus Line Buffering
The SN74LVC1G07DBVR is a natural fit for I2C and SMBus open-drain buses because its output structure mirrors the bus protocol itself: pull LOW actively, release HIGH through external pull-ups. With VCC from 1.65 V to 5.5 V and IO tolerance to 5.5 V, a controller running at 1.8 V can safely buffer a 3.3 V or 5 V bus without level translation hardware. The 32 mA sink capability far exceeds the 3 mA typical I2C sink requirement, providing large margin at fast-mode 400 kHz speeds. Place the device close to the bus connector and choose pull-up resistors sized to the bus capacitance to meet rise-time limits.
Recommended
Mixed-Voltage Level Shifting
Open-drain outputs are the classic method of translating between logic domains: the SN74LVC1G07DBVR input can be driven by a 1.8 V or 2.5 V signal while the output is pulled up to any rail up to 5.5 V. Because the input and output tolerate 5.5 V regardless of VCC, and the Ioff feature prevents backfeed during partial-power-down, the device suits power-sequenced mixed-rail systems. The trade-off versus a dedicated translator is speed: the HIGH edge is set by the RC time constant of the pull-up and node capacitance, so keep pull-ups in the 1 k ohm to 10 k ohm range for sub-microsecond edges.
Recommended
Wired-OR / Wired-AND Logic
Multiple SN74LVC1G07 outputs can be tied directly to a single pull-up node to implement active-low wired-OR or active-high wired-AND functions without any risk of output contention, since each output can only sink current. This eliminates the glue logic of discrete OR/AND gates in fault-aggregation and enable-chaining circuits. With a maximum ICC of 10 uA and 3.3 ns propagation delay at 3.3 V, cascaded open-drain stages add negligible timing skew and standby power. Design the shared pull-up value considering the combined leakage of all tied outputs so the HIGH level stays within specification.
Recommended
Microcontroller GPIO Expansion and Interrupt Fan-out
The SN74LVC1G07DBVR fans out a microcontroller open-drain interrupt or enable output across boards and subsystems sharing one pull-up rail. Its -40C to +125C operating range and 5.5 V tolerant pins make it robust in industrial environments where multiple controller boards assert a shared fault or wake line. Propagation delay of 3.3 ns at 3.3 V ensures interrupt timing is preserved, and the 10 uA max ICC suits battery-backed controllers. Use one buffer per board tap to prevent bus contention and to isolate boards during hot-swap events, leveraging the Ioff partial-power-down feature.
Recommended
LED and Low-Side Indicator Driving
As a low-side switch, the SN74LVC1G07DBVR sinks LED return current directly from a supply rail up to 5.5 V, independent of its own VCC. The 32 mA maximum sink current covers typical indicator and backlight LEDs, and the Β±24 mA drive at 3.3 V gives consistent brightness in 3.3 V logic systems. Because the open-drain output behaves like a switch to ground, dimming can be implemented via PWM from the driving logic. Estimated: with a 330 ohm series resistor on a 5 V rail, LED current is roughly 10 mA, well within ratings, and the buffer adds essentially no thermal stress in the SOT-23-5 package.
Recommended
Automotive and Industrial Digital Interfacing
In automotive and industrial controllers, the SN74LVC1G07DBVR conditions and drives status, enable, and fault lines between modules operating at different supply rails. The -40C to +125C temperature range, 5.5 V tolerant inputs/outputs, and Ioff partial-power-down behavior address harsh-environment and power-cycled conditions common in these systems. Its small SOT-23-5 footprint fits dense ECU and PLC boards, while MSL 1 handling simplifies assembly. Pair the open-drain output with an appropriate pull-up to the module's status rail for robust noise-immune signaling; typical values of 2.2 k ohm to 10 k ohm balance edge speed against quiescent draw.
Recommended
Recommended Products Summary
Engineering reference data for SN74LVC1G07DBVR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74LVC1G07DBVT | SN74LVC1G07DBVR (UMW) | 74LVC1G07GM-115 | 74LVC1G07W5-7 | 74LVC1G07 |
|---|---|---|---|---|---|---|
| Package | SOT-23-5 (DBV) | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same | SOT-25 (SOT-23-5) - same footprint | SOT-25 (SOT-23-5) - same footprint | SOT-23-5 - same |
| Brand | Texas Instruments | Texas Instruments | UMW | Nexperia | Diodes Incorporated | onsemi |
| Supply Voltage Range | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V |
| Output Type | Open drain, non-inverting | Open drain, non-inverting | Open drain, non-inverting | Open drain, non-inverting | Open drain, non-inverting | Open drain, non-inverting |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
Key Differentiators
- True footprint-identical TI reel variants and second sources (vs SN74LVC1G07DCKR)
- 5.5 V tolerant I/O with Ioff partial-power-down (vs SN74LVC1G07DBVR (UMW))
- Multi-source availability at low cost (vs 74LVC1G07W5-7)
Design Notes
The open-drain output never actively drives HIGH - if the external pull-up resistor is omitted, the output will simply float and downstream logic will see an undefined level. Always include a pull-up to the desired HIGH rail, and verify the worst-case sink current (pull-up voltage / resistor value) stays below the 32 mA maximum. For example, on a 5 V pull-up, 150 ohms would allow 33 mA and violate the rating; 1 k ohm or higher is safe.
HIGH-state rise time on an open-drain node is set by the RC product of the pull-up resistor and total node capacitance (trace, device inputs, cable). Long buses or heavily loaded wired-OR nodes need smaller pull-ups for speed, at the cost of higher sink current. As a starting point, 4.7 k ohm to 10 k ohm suits short on-board lines; drop to 1 k ohm to 2.2 k ohm for cables or 400 kHz+ bus operation. Measure rise time in-system to confirm protocol timing compliance.
Exploit the Ioff feature in multi-rail systems: the SN74LVC1G07 tolerates 5.5 V on its input and output even when its own VCC is 0 V, so placing it between powered-down and live domains does not backfeed the dead rail. Keep the 0.1 uF VCC decoupling capacitor within 2 mm of pin 5, and remember max ICC is only 10 uA, so the device adds negligible standby load to battery designs.
Compliance Information
RoHS compliant and MSL 1 per distributor (PartGenie UMW listing and TI product data). REACH, halogen-free, and conflict-minerals declarations should be confirmed via the official TI environmental certificate page.
