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74LCX244MTC

Public Made by Adom

by adom

onsemi Buffers / Drivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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74LCX244MTC

onsemi · Buffers / Drivers · TSSOP-20

74LCX244MTC from onsemi, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OE1 input Active-low 3-STATE output enable input for the first buffer group (O0-O3); HIGH puts those outputs in high impedance.
2 I0 input Data input to buffer driving O0; 5V tolerant (VI up to 5.5V).
3 O4 tri_state 3-STATE output of the second buffer group, enabled by OE2, follows I4 and drives up to ±24mA at VCC = 3.0V.
4 I1 input Data input to buffer driving O1; 5V tolerant (VI up to 5.5V).
5 O5 tri_state 3-STATE output of the second buffer group, enabled by OE2, follows I5 and drives up to ±24mA at VCC = 3.0V.
6 I2 input Data input to buffer driving O2; 5V tolerant (VI up to 5.5V).
7 O6 tri_state 3-STATE output of the second buffer group, enabled by OE2, follows I6 and drives up to ±24mA at VCC = 3.0V.
8 I3 input Data input to buffer driving O3; 5V tolerant (VI up to 5.5V).
9 O7 tri_state 3-STATE output of the second buffer group, enabled by OE2, follows I7 and drives up to ±24mA at VCC = 3.0V.
10 GND power_in Ground reference; maximum ground current ±100mA per ground pin.
11 I7 input Data input to buffer driving O7; 5V tolerant (VI up to 5.5V).
12 O3 tri_state 3-STATE output of the first buffer group, enabled by OE1, follows I3 and drives up to ±24mA at VCC = 3.0V.
13 I6 input Data input to buffer driving O6; 5V tolerant (VI up to 5.5V).
14 O2 tri_state 3-STATE output of the first buffer group, enabled by OE1, follows I2 and drives up to ±24mA at VCC = 3.0V.
15 I5 input Data input to buffer driving O5; 5V tolerant (VI up to 5.5V).
16 O1 tri_state 3-STATE output of the first buffer group, enabled by OE1, follows I1 and drives up to ±24mA at VCC = 3.0V.
17 I4 input Data input to buffer driving O4; 5V tolerant (VI up to 5.5V).
18 O0 tri_state 3-STATE output of the first buffer group, enabled by OE1, follows I0 and drives up to ±24mA at VCC = 3.0V.
19 OE2 input Active-low 3-STATE output enable input for the second buffer group (O4-O7); HIGH puts those outputs in high impedance.
20 VCC power_in Supply voltage, 2.0V to 3.6V operating (2.3V to 3.6V specified), absolute maximum 7.0V.

Key specifications

Parameter Value
Manufacturer onsemi
Package TSSOP-20
Category Logic ICs
Pins 20

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage, Operating VCC 2 3.6 V Operating 4
Supply Voltage, Data Retention VCC 1.5 3.6 V Data Retention 4
Input Voltage VI 0 5.5 V 4
Output Voltage 3-STATE VO 0 5.5 V 3-STATE 4
Free-Air Operating Temperature TA -40 85 °C 4
Input Edge Rate Δt/ΔV 0 10 ns/V VIN = 0.8V-2.0V, VCC = 3.0V 4
Supply Voltage VCC -0.5 7 V 4
DC Input Voltage VI -0.5 7 V 4
DC Output Voltage, 3-STATE VO -0.5 7 V Output in 3-STATE 4
Storage Temperature TSTG -65 150 °C 4
DC Output Source/Sink Current IO -50 50 mA 4
HIGH Level Input Voltage VIH 1.7 V VCC 2.3-2.7V, TA = -40°C to +85°C 5
HIGH Level Input Voltage VIH 2 V VCC 2.7-3.6V, TA = -40°C to +85°C 5
LOW Level Input Voltage VIL 0.7 V VCC 2.3-2.7V 5
LOW Level Input Voltage VIL 0.8 V VCC 2.7-3.6V 5
HIGH Level Output Voltage VOH 1.8 V VCC 2.3V, IOH = -8mA 5
HIGH Level Output Voltage VOH 2.2 V VCC 2.7V, IOH = -12mA 5
HIGH Level Output Voltage VOH 2.4 V VCC 3.0V, IOH = -18mA 5
LOW Level Output Voltage VOL 0.2 V VCC 2.3-3.6V, IOL = 100µA 5
LOW Level Output Voltage VOL 0.6 V VCC 2.3V, IOL = 8mA 5
LOW Level Output Voltage VOL 0.4 V VCC 2.7V, IOL = 12mA 5
LOW Level Output Voltage VOL 0.55 V VCC 3.0V, IOL = 24mA 5
Input Leakage Current II -5 5 µA VCC 2.3-3.6V, 0 ≤ VI ≤ 5.5V 5
3-STATE Output Leakage IOZ -5 5 µA VCC 2.3-3.6V, 0 ≤ VO ≤ 5.5V, VI = VIH or VIL 5
Power-Off Leakage Current IOFF 10 µA VCC 0, VI or VO = 5.5V 5
Quiescent Supply Current ICC 10 µA VCC 2.3-3.6V, VI = VCC or GND 5
Quiescent Supply Current ICC -10 10 µA VCC 2.3-3.6V, 3.6V ≤ VI, VO ≤ 5.5V (outputs disabled or 3-STATE only) 5
Increase in ICC per Input ΔICC 500 µA VCC 2.3-3.6V, VIH = VCC - 0.6V 5
Propagation Delay, Data to Output tPHL, tPLH 1.5 6.5 ns VCC = 3.3V ± 0.3V, CL = 50pF, RL = 500Ω 5
Propagation Delay, Data to Output tPHL, tPLH 1.5 7.5 ns VCC = 2.7V, CL = 50pF, RL = 500Ω 5
Propagation Delay, Data to Output tPHL, tPLH 1.5 7.8 ns VCC = 2.5V ± 0.2V, CL = 30pF, RL = 500Ω 5
Output Enable Time tPZL, tPZH 1.5 8 ns VCC = 3.3V ± 0.3V, CL = 50pF, RL = 500Ω 5
Output Enable Time tPZL, tPZH 1.5 9 ns VCC = 2.7V, CL = 50pF, RL = 500Ω 5
Output Enable Time tPZL, tPZH 1.5 10 ns VCC = 2.5V ± 0.2V, CL = 30pF, RL = 500Ω 5
Output Disable Time tPLZ, tPHZ 1.5 7 ns VCC = 3.3V ± 0.3V, CL = 50pF, RL = 500Ω 5
Output Disable Time tPLZ, tPHZ 1.5 8 ns VCC = 2.7V, CL = 50pF, RL = 500Ω 5
Output Disable Time tPLZ, tPHZ 1.5 8.4 ns VCC = 2.5V ± 0.2V, CL = 30pF, RL = 500Ω 5
Output to Output Skew tOSHL, tOSLH 1 ns RL = 500Ω 5
Input Capacitance CIN 7 pF VCC = Open, VI = 0V or VCC 6
Output Capacitance COUT 8 pF VCC = 3.3V, VI = 0V or VCC 6
Power Dissipation Capacitance CPD 25 pF VCC = 3.3V, VI = 0V or VCC, f = 10MHz 6

CAD (KiCad official)

  • Symbol: 74LCX244MTC
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: 74lcx244mtc-etched.step / 74lcx244mtc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74lcx244mtc.step / 74lcx244mtc.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (16 pp, sha256 ffa4510bfdeb6e9f, retrieved 2026-10-24, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF