SN74LVC2G34DCKR - Dual Buffer Gate, 1.65V-5.5V | TI
MPN: SN74LVC2G34DCKR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.35 | $0.35 |
| 10 | $0.28 | $2.80 |
| 100 | $0.21 | $21.00 |
| 500 | $0.17 | $85.00 |
| 1,000 | $0.14 | $140.00 |
Drop-in alternatives for SN74LVC2G34DCKR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
SN74LVC2G34DBVR
✅ Drop-In📋 Reference alternative (not in catalog)
SN74LVC2G34DCKRG4
✅ Drop-In📋 Reference alternative (not in catalog)
74LVC2G34GW,125
✅ Drop-In📋 Reference alternative (not in catalog)
NL27WZ16DFT2G
✅ Drop-In📋 Reference alternative (not in catalog)
SN74LVC2G34DCKR Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Logic Family | LVC |
| Supply Voltage Range | 1.65 V to 5.5 V |
| Output Type | Push-Pull |
| Propagation Delay (tpd) | 3.3 ns at 3.3 V |
| Output Drive | ±24 mA at 3.3 V |
| Input Voltage Tolerance | 5.5 V max |
| Quiescent Current (ICC) | 10 µA max |
| Operating Temperature Range | -40°C to +125°C |
| Package Type | SC-70-6 (DCK) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 |
| Number of Elements | 2 |
| Bits per Element | 1 |
SN74LVC2G34DCKR Pin Configuration
| Pin 1 | 1A — Input of buffer 1 |
| Pin 2 | GND — Ground |
| Pin 3 | 1Y — Output of buffer 1 |
| Pin 4 | 2Y — Output of buffer 2 |
| Pin 5 | VCC — Power supply |
| Pin 6 | 2A — Input of buffer 2 |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SN74LVC2G34DCKR is suitable for 6 applications: Signal Buffering for Microcontrollers, Level Shifting in Mixed-Voltage Systems, Clock Distribution, General-Purpose Logic Interfacing, Fan-Out Enhancement, Portable Electronics.
Signal Buffering for Microcontrollers
The SN74LVC2G34DCKR provides two non-inverting buffers to isolate and drive microcontroller I/O lines. Its 1.65-V to 5.5-V supply range matches common MCU voltages, and the ±24-mA output drive ensures reliable signaling to peripherals. The low 10-µA quiescent current is ideal for battery-powered MCU systems, while the Ioff feature allows safe power-down without backflow current.
Recommended
Level Shifting in Mixed-Voltage Systems
With inputs accepting up to 5.5 V regardless of VCC, the SN74LVC2G34DCKR can interface 3.3-V logic to 5-V logic without external level shifters. This simplifies mixed-voltage designs in industrial control and consumer electronics. The push-pull output swings to VCC, providing clean logic levels. The wide supply range and high drive current ensure compatibility with various logic families.
Recommended
Clock Distribution
The SN74LVC2G34DCKR can buffer clock signals to multiple loads, reducing skew and improving signal integrity. Its 3.3-ns propagation delay at 3.3 V is fast enough for many clock distribution applications. The low output impedance and ±24-mA drive capability allow driving multiple clock inputs. The device's wide supply range supports various clock logic levels.
Recommended
General-Purpose Logic Interfacing
The SN74LVC2G34DCKR serves as a general-purpose buffer for interfacing between different logic families or driving LEDs and relays. Its 1.65-V to 5.5-V range and high output drive make it versatile for various logic levels. The dual-channel configuration saves board space. The device is fully specified for partial-power-down, ensuring safe operation in multi-rail systems.
Recommended
Fan-Out Enhancement
The SN74LVC2G34DCKR increases the fan-out of a logic signal by providing two buffered outputs. This is useful when a single output must drive multiple inputs. The ±24-mA output drive ensures each load receives adequate current. The low propagation delay minimizes timing skew between the two outputs. The device's small SC-70 package allows placement close to the source.
Recommended
Portable Electronics
The SN74LVC2G34DCKR is ideal for portable electronics due to its low power consumption (10-µA max ICC) and small SC-70 package. It can buffer signals in smartphones, wearables, and IoT devices. The wide supply range accommodates battery voltage variations. The Ioff feature ensures safe power-down sequences, protecting the battery and other components.
Recommended
Recommended Products Summary
Engineering reference data for SN74LVC2G34DCKR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74LVC2G34DBVR | 74LVC2G34GW,125 | NL27WZ16DFT2G |
|---|---|---|---|---|
| Package | SC-70-6 (DCK) | SOT-23-6 (DBV) | SOT-353 (SC-88A) | SC-70-6 (SC-88) |
| Brand | Texas Instruments | Texas Instruments | NXP Semiconductors | 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 |
| Propagation Delay (tpd) | 3.3 ns at 3.3 V | 3.3 ns at 3.3 V | 3.3 ns at 3.3 V | 3.3 ns at 3.3 V |
| Output Drive | ±24 mA at 3.3 V | ±24 mA at 3.3 V | ±24 mA at 3.3 V | ±24 mA at 3.3 V |
| Quiescent Current (ICC) | 10 µA max | 10 µA max | 10 µA max | 10 µA max |
| Input Voltage Tolerance | 5.5 V max | 5.5 V max | 5.5 V max | 5.5 V max |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
Key Differentiators
- Dual buffer in ultra-small SC-70 package (vs SN74LVC1G34DCKR)
- Wide supply range with 5.5-V input tolerance (vs NL27WZ16DFT2G)
- Low quiescent current of 10 µA max (vs 74LVC2G34GW,125)
Design Notes
Place a 0.1-µF ceramic capacitor close to the VCC pin to decouple high-frequency noise. For systems with multiple switching regulators, a 1-µF capacitor may be needed to maintain stable operation. The low ICC of 10 µA makes power supply design straightforward, but ensure the supply can handle transient currents during output switching.
Keep traces from the buffer outputs short to minimize parasitic capacitance and maintain signal integrity. For high-speed signals, use controlled impedance traces and avoid vias where possible. The SC-70 package has a 0.65-mm pitch, so ensure adequate solder mask clearance and use a fine-pitch soldering profile.
Do not exceed the absolute maximum ratings, especially input voltage above 5.5 V and VCC above 6.5 V. The Ioff feature allows partial power-down, but ensure the device is fully powered down before removing VCC to avoid backflow current. Unused inputs should be tied to VCC or GND to prevent floating nodes and excessive ICC.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified.
