M74VHC1GT50DFT1G - Single Non-Inverting Buffer/Level Shifter | onsemi
MPN: M74VHC1GT50DFT1G ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.36 | $3.60 |
| 100 | $0.24 | $24.00 |
| 500 | $0.18 | $90.00 |
| 1,000 | $0.14 | $140.00 |
| 3,000 | $0.11 | $330.00 |
M74VHC1GT50DFT1G Overview
What is a non-inverting buffer / level shifter? It is a single-bit logic device that regenerates an input signal to a full-rail output without inverting its polarity. When TTL logic swings (0.8 V/2.0 V thresholds) must drive a higher-voltage CMOS rail (3.3 V or 5 V), a TTL-to-CMOS level shifter buffer is required; the device sits in the signal chain between an upstream controller and a downstream CMOS load, restoring logic levels and providing isolation. This hierarchy places it under: buffer → line driver → logic IC → integrated circuit → semiconductor.
Key features include TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V when VCC = 5 V), CMOS-compatible outputs (VOH > 0.8·VCC, VOL < 0.1·VCC at rated load), 5 V tolerant inputs with power-down protection on both inputs and outputs, and balanced propagation delays. The part is fabricated with silicon-gate CMOS technology that achieves bipolar-Schottky-TTL-like speed while maintaining CMOS-level quiescent dissipation. The SC-88A/TSOP-5 footprint occupies only ~2.0 mm × 2.1 mm of board area.
Typical applications include interfacing 5 V TTL peripherals to 3.3 V or 2.5 V CMOS logic domains, signal conditioning in mixed-voltage microcontroller designs, and clock or single-line data buffering in portable, industrial, and consumer systems. Designers select this part when board space is constrained and a true single-gate buffer is required without the overhead of multi-channel drivers.
A primary design consideration is input-edge speed: although the device accepts slow TTL edges, the output rise/fall time depends on the load capacitance and VCC. Decouple VCC with a 0.1 µF ceramic capacitor placed as close as possible to pin 5, and avoid driving large capacitive loads without a series damping resistor.
This page synthesizes distributor pricing, drop-in same-package alternatives from onsemi and competing vendors, and practical design notes that go beyond the manufacturer datasheet summary.
Drop-in alternatives for M74VHC1GT50DFT1G — 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 M74VHC1GT50DFT1G (same form factor and footprint) — differing in Function, Logic Family, Package, Propagation Delay (tPD), Quiescent Current (ICC).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC74VHC1GT50DFT1G
✅ Drop-In📋 Reference alternative (not in catalog)
MC74VHC1GT50DTT1G
✅ Drop-In📋 Reference alternative (not in catalog)
MC74VHC1G50DFT1G
✅ Drop-In📋 Reference alternative (not in catalog)
MC74VHC1GT50DF1G
✅ Drop-In📋 Reference alternative (not in catalog)
SN74LVC1G34DBVR
✅ Drop-In📋 Reference alternative (not in catalog)
74LVC1G34GW
✅ Drop-In📋 Reference alternative (not in catalog)
M74VHC1GT50DFT1G Maximum Ratings & Electrical Characteristics
| Function | Single Non-Inverting Buffer / CMOS Logic Level Shifter |
| Logic Family | VHC (High-Speed CMOS, TTL-compatible inputs) |
| Number of Elements | 1 |
| Number of Bits per Element | 1 |
| Output Type | CMOS (Single-Ended) |
| Polarity | Non-Inverting |
| Supply Voltage (VCC) | 1.65 V to 5.5 V |
| Input Threshold VIL (VCC = 5 V) | 0.8 V |
| Input Threshold VIH (VCC = 5 V) | 2.0 V |
| Output High VOH | > 0.8 × VCC |
| Output Low VOL | < 0.1 × VCC |
| Propagation Delay (tPD) | 3.5 ns (typical at VCC = 5 V) |
| Quiescent Current (ICC) | 1 µA (maximum at TA = 25 °C) |
| Input / Output Power-Down Protection | Yes |
| Package | SC-88A / TSOP-5 / SOT-353 (5-pin) |
| Operating Temperature | -55 °C to +125 °C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Marking Code | VLx |
M74VHC1GT50DFT1G Pin Configuration
| Pin 1 | NC — No connect (per SC-88A CASE 483-02 outline) |
| Pin 2 | A — Data input (TTL-compatible) |
| Pin 3 | GND — Ground |
| Pin 4 | Y — Data output (CMOS, non-inverting) |
| Pin 5 | VCC — Supply voltage (1.65 V to 5.5 V) |
Typical Applications
M74VHC1GT50DFT1G is suitable for 6 applications: 5 V TTL to 3.3 V CMOS Logic Level Shifting, Clock Signal Buffering and Distribution, Single-Line UART / SPI Signal Conditioning, Reset and Control Signal Regeneration, Portable and Battery-Powered Consumer Electronics, Industrial Sensor Interface Conditioning.
5 V TTL to 3.3 V CMOS Logic Level Shifting
The M74VHC1GT50DFT1G's TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V at VCC = 5 V) make it an ideal translator from 5 V TTL peripherals (such as legacy 74LS-series logic or 5 V microcontrollers) into a 3.3 V or 2.5 V CMOS logic domain. Place the part between the 5 V source and the lower-voltage CMOS receiver with VCC tied to the CMOS rail; the input accepts the full 0-5 V TTL swing and the output regenerates a clean rail-to-rail CMOS signal at 3.3 V. Unlike a simple resistor divider, this buffer restores edge speed (3.5 ns typical tPD at 5 V) and provides input-to-output isolation, eliminating ground-bounce and ringing in mixed-voltage designs.
Recommended
Clock Signal Buffering and Distribution
The M74VHC1GT50DFT1G serves as a high-speed single-gate clock buffer with 3.5 ns typical propagation delay at VCC = 5 V, low 1 µA quiescent current, and balanced rise/fall propagation delays that preserve clock duty cycle. Place the device between a master oscillator and downstream CMOS loads to isolate the oscillator from capacitive loading, fan out the clock to a remote IC, or shift a 5 V clock into a 3.3 V clock domain. Compared to multi-channel clock drivers, this single-gate form factor is ideal when only one auxiliary buffer is required and PCB area is at a premium.
Recommended
Single-Line UART / SPI Signal Conditioning
In portable and embedded designs, the M74VHC1GT50DFT1G is used to condition and level-shift single-ended UART or SPI lines between mixed-voltage MCUs and external peripherals. Its 5 V-tolerant input and CMOS-compatible output (VOH > 0.8 × VCC, VOL < 0.1 × VCC) provide a robust, low-power solution for translating a 5 V FTDI-style debug UART into a 3.3 V MCU UART, or buffering a 3.3 V SPI chip-select signal up to a 5 V peripheral. The part's 1 µA quiescent current at 25 °C makes it suitable for battery-powered applications where standby drain is critical.
Recommended
Reset and Control Signal Regeneration
The M74VHC1GT50DFT1G is widely used to regenerate and clean up reset, chip-select, or enable signals that have been degraded by long PCB traces or high-capacitive loads. Place it at the receiving end of a long reset trace in a backplane or industrial control board; the buffer's 3.5 ns tPD and sharp CMOS output thresholds restore a clean edge, preventing false resets caused by ringing. Power-down protection on input and output also makes it safe for hot-insertion scenarios where signals may be present before VCC ramps.
Recommended
Portable and Battery-Powered Consumer Electronics
With a maximum quiescent current of 1 µA at 25 °C and a wide 1.65 V to 5.5 V operating range, the M74VHC1GT50DFT1G is well suited for portable, battery-powered consumer products where standby drain must be minimized. Typical uses include buffering an always-on interrupt line from a sensor to a low-power MCU, level-shifting a button-press signal across voltage domains, or isolating a watchdog timer output. The TSOP-5/SC-88A footprint occupies only ~2.0 × 2.1 mm, allowing placement adjacent to connectors or test points without disturbing dense layouts.
Recommended
Industrial Sensor Interface Conditioning
In industrial sensor-interface designs the M74VHC1GT50DFT1G is used as a logic-level conditioner between 5 V sensor outputs (e.g., proximity switches, optical encoders) and 3.3 V industrial MCU inputs. The TTL-compatible input thresholds accept long-cable 5 V sensor signals while rejecting common-mode noise, and the CMOS output cleanly drives the MCU GPIO. Its -55 °C to +125 °C operating range, RoHS compliance, and onsemi's industrial-grade qualification make it suitable for factory automation, PLC I/O conditioning, and motor-control feedback signal chains.
Recommended
Recommended Products Summary
Engineering reference data for M74VHC1GT50DFT1G — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC74VHC1GT50DFT1G | MC74VHC1GT50DTT1G | MC74VHC1G50DFT1G | SN74LVC1G34DBVR | 74LVC1G34GW |
|---|---|---|---|---|---|---|
| Package | SC-88A / TSOP-5 / SOT-353 (5-pin) | SC-88A / TSOP-5 (5-pin) - same | SC-88A / TSOP-5 (5-pin) - same | SC-88A / TSOP-5 (5-pin) - same | SOT-23-5 (5-pin) - pin-compatible | SC-88 / SOT-353 (5-pin) - same |
| Brand | onsemi | onsemi | onsemi | onsemi | Texas Instruments | NXP Semiconductors |
| Supply Voltage (VCC) | 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 | |
| Input Threshold Type | TTL-compatible | TTL-compatible | Standard CMOS | CMOS | CMOS | |
| Propagation Delay (tPD @ 5 V) | 3.5 ns (typical) | 3.5 ns (typical) | ~2.0 ns typical at 5 V | ~2.0 ns typical at 5 V | ||
| Quiescent Current (max @ 25 °C) | 1 µA | 1 µA | 1 µA | 10 µA | 10 µA | |
| Polarity | Non-Inverting | Non-Inverting | Non-Inverting | Non-Inverting | Non-Inverting | |
| Output Type | CMOS (single-ended) | CMOS | CMOS | CMOS | ||
| RoHS Compliance | Yes | Yes | Yes | Yes |
Key Differentiators
- TTL-compatible input thresholds at CMOS supply voltages (vs MC74VHC1G50DFT1G (standard CMOS inputs))
- Ultra-low 1 µA quiescent current at 25 °C (vs SN74LVC1G34DBVR (TI LVC1G family))
- Dual prefix (M / MC) for legacy-system compatibility (vs MC74VHC1GT50DFT1G (full prefix))
Design Notes
Decouple VCC (pin 5) with a 0.1 µF X7R ceramic capacitor placed within 2 mm of the pin to suppress supply-noise-induced jitter on the output. The M74VHC1GT50DFT1G draws only 1 µA quiescent current at 25 °C, but switching currents during output transitions can briefly reach several mA; a local decoupling capacitor prevents the part from injecting noise into a shared 3.3 V or 5 V rail.
Do not confuse M74VHC1GT50 (TTL-compatible inputs) with M74VHC1G50 (standard CMOS inputs) - they share the same SC-88A pinout but have different VIL/VIH thresholds. When substituting across these two MPNs, verify that your upstream driver meets the chosen part's input thresholds; otherwise, an edge that swings between 0.8 V and 2.0 V may be misread by the standard-CMOS variant. The 'T' in 'GT50' is the TTL-input designator.
Route input traces away from switching nodes or noisy clock lines to preserve the TTL-compatible input thresholds. The SC-88A/TSOP-5 footprint is small (≈2.0 × 2.1 mm) but exposed-pad variants do not exist - thermal dissipation is limited to the five pins. For driving heavy capacitive loads (>50 pF), place a series damping resistor (22-100 Ω) close to the output to control edge rate and reduce ground bounce.
Estimated: at VCC = 5 V and a 15 pF load, the output rise time is approximately 2-3 ns based on onsemi's typical drive strength. For long PCB traces (>5 cm), model the line as a transmission line and add a series source-termination resistor to prevent reflections. The part's power-down protection on input and output allows signals to be present before VCC, simplifying multi-rail sequencing.
Compliance Information
RoHS compliant per onsemi distributor listings (DigiKey, Mouser). Not AEC-Q100 qualified - this is a commercial/industrial grade single-gate logic IC. Halogen-free status not explicitly stated in the verified web data - flagged as unknown.
