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74LCX14MTCX

Hex inverter, Schmitt trigger, 2.0-3.6V, 5V tolerant, 6.5ns tpd, ±24mA, TSSOP-14

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Manufacturer Part：

74LCX14MTCX

Package：

TSSOP-14 (4.4mm wide) 5.0 x 4.4 x 1.1 mm

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Description

Product Overview

The onsemi 74LCX14MTCX is a low-voltage hex inverter with 5V-tolerant Schmitt-trigger inputs, housed in a 14-pin TSSOP package. Fabricated with advanced CMOS technology, it operates from 2.0 V to 3.6 V and transforms slowly changing input signals into sharply defined, jitter-free outputs with ±24 mA balanced output drive capability.

Key Specifications

Logic Type Hex Inverter (6 channels)
Input Type Schmitt Trigger
Supply Voltage (VCC) 2.0 V to 3.6 V
Input Voltage Tolerance Up to 5.5 V (5V tolerant)
Propagation Delay (tpd) 6.5 ns (Max @ 3.3V)
Output Drive ±24 mA @ VCC=3.0V
Quiescent Current (ICC) 10 µA (Max)
Hysteresis (Typ) 1.0 V
Operating Temperature -40°C to +85°C
Package TSSOP-14 (4.4mm wide)

Features

  • 5V tolerant inputs for interfacing 5V, 3V, and 2.5V systems
  • 6.5 ns maximum propagation delay at VCC = 3.3V
  • Ultra-low 10 µA quiescent current reduces system power
  • Power-down high impedance inputs and outputs
  • ±24 mA balanced output sink and source drive capability
  • Patented noise/EMI reduction circuitry
  • ESD protection: HBM >2000V, Machine Model >200V
  • Latch-up performance exceeds JEDEC 78 conditions
  • Pb-Free, Halogen Free/BFR Free, RoHS compliant

Applications

  • Signal conditioning for noisy environments
  • Wave and pulse shaping circuits
  • Line receivers for slow input signals
  • Mixed-voltage system interfacing (5V to 3.3V)
  • Automotive, broadband, and building control systems

The onsemi 74LCX14MTCX is a low-voltage hex inverter featuring Schmitt-trigger inputs, manufactured with advanced CMOS technology. The device contains six independent inverter gates, each capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. The Schmitt-trigger action provides hysteresis (typically 1.0 V) between positive-going and negative-going input thresholds, determined internally by transistor ratios and essentially insensitive to temperature and supply voltage variations. The inputs tolerate voltages up to 5.5 V, allowing safe interfacing between 5V, 3V, and 2.5V logic systems. Operating from a 2.0 V to 3.6 V supply, the device achieves 6.5 ns maximum propagation delay at 3.3V with ultra-low 10 µA quiescent current. The ±24 mA balanced output drive at VCC=3.0V enables driving multiple logic loads. The power-down high impedance feature isolates inputs and outputs when VCC is removed, supporting live insertion/removal applications.

The 74LCX14MTCX contains six independent inverter gates with Schmitt-trigger input stages. Each gate performs the logical NOT function: a LOW input produces a HIGH output, and vice versa. The Schmitt-trigger input stage introduces two distinct threshold voltages — a positive-going threshold (VT+) and a negative-going threshold (VT−) — creating a hysteresis window of approximately 1.0V. When the input rises above VT+ (e.g., 1.7V at VCC=2.5V), the output switches LOW. When the input falls below VT− (e.g., 0.4V at VCC=2.5V), the output switches HIGH. This hysteresis eliminates the effects of input noise and slow transition edges, preventing output oscillation. The 5V tolerant input structure uses an extended voltage rating on the input transistors, allowing signals exceeding VCC to be applied without damage. The output buffer provides ±24 mA balanced drive, sufficient for driving standard TTL or multiple CMOS loads. Power-down high impedance circuitry disconnects the I/O pins when VCC is at 0V.

Pin Name Type Function
1 A1 Input Schmitt trigger input for Inverter 1
2 Y1 Output Inverted output for Inverter 1
3 A2 Input Schmitt trigger input for Inverter 2
4 Y2 Output Inverted output for Inverter 2
5 A3 Input Schmitt trigger input for Inverter 3
6 Y3 Output Inverted output for Inverter 3
7 GND Power Ground (0V)
8 Y4 Output Inverted output for Inverter 4
9 A4 Input Schmitt trigger input for Inverter 4
10 Y5 Output Inverted output for Inverter 5
11 A5 Input Schmitt trigger input for Inverter 5
12 Y6 Output Inverted output for Inverter 6
13 A6 Input Schmitt trigger input for Inverter 6
14 VCC Power Supply voltage (2.0V to 3.6V)
  • Signal conditioning and debouncing for mechanical switches in industrial control
  • Wave and pulse shaping in digital communication circuits
  • Line receiver for slow-rising digital signals in automotive networks
  • Mixed-voltage system interfacing between 5V and 3.3V logic domains
  • Clock signal conditioning and buffering in consumer electronics
Manufacturer Part Number Package Notes
Texas Instruments SN74LVC14APWR TSSOP-14 Pin-to-pin compatible
Nexperia 74LVC14APW,118 TSSOP-14 Equivalent, similar specs
onsemi 74LCX14M SOIC-14 Same function, wider package
onsemi 74LCX14BQX DQFN-14 Leadless package alternative
STMicroelectronics 74LVC14AMTR TSSOP-14 Pin-compatible equivalent
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