Skip to main content

We use cookies to understand how you use our site and improve your experience. See our Privacy Policy.

SN74LV1T126

Logic Level Shifter

The SN74LV1T126 is a logic level shifter from Texas Instruments. View the full SN74LV1T126 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

SN74LV1T126 shares its datasheet with SN74LV1T125, whose page lists every part number it covers.

Official SN74LV1T126 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Texas Instruments

Category

Integrated Circuits

SN74LV1T126 Key Specifications

ParameterValue
High-level output current (VCC = 1.8 V)-3 mA
High-level output current (VCC = 3.3 V)-7 mA
High-level output current (VCC = 5.0 V)-8 mA
Low-level output current (VCC = 1.8 V)3 mA
Low-level output current (VCC = 3.3 V)7 mA
Low-level output current (VCC = 5.0 V)8 mA
Static supply current (VCC = 3.3 V)1 μA (Typ), 10 μA (Max)
Input capacitance (VCC = 3.3 V)2 pF (Typ), 10 pF (Max)
Output capacitance (VCC = 3.3 V)2.5 pF (Typ)
Power dissipation capacitance (VCC = 1.8 V to 5.5 V)14 pF (Typ)

SN74LV1T126 Overview

Part: SN74LV1T125 — Texas Instruments

Type: Single Buffer Gate with 3-State Output CMOS Logic Level Shifter

Description: A single buffer gate with reduced input thresholds for voltage translation, supporting 1.8V to 5.5V operation, 5V tolerant inputs, and output drive up to 8 mA.

Operating Conditions:

  • Supply voltage: 1.6–5.5 V
  • Operating temperature: -40 to 125 °C
  • Input voltage: 0–5.5 V
  • Output voltage: 0–VCC V

Absolute Maximum Ratings:

  • Max supply voltage: 7.0 V
  • Max continuous output current: ±25 mA
  • Max junction temperature: 150 °C
  • Max storage temperature: 150 °C

Key Specs:

  • High-level output current (VCC = 1.8 V): -3 mA
  • High-level output current (VCC = 3.3 V): -7 mA
  • High-level output current (VCC = 5.0 V): -8 mA
  • Low-level output current (VCC = 1.8 V): 3 mA
  • Low-level output current (VCC = 3.3 V): 7 mA
  • Low-level output current (VCC = 5.0 V): 8 mA
  • Static supply current (VCC = 3.3 V): 1 μA (Typ), 10 μA (Max)
  • Input capacitance (VCC = 3.3 V): 2 pF (Typ), 10 pF (Max)
  • Output capacitance (VCC = 3.3 V): 2.5 pF (Typ)
  • Power dissipation capacitance (VCC = 1.8 V to 5.5 V): 14 pF (Typ)

Features:

  • Single-supply voltage translator at 5V, 3.3V, 2.5V, and 1.8V VCC
  • Operating range of 1.8V to 5.5V
  • Up and down voltage translation capabilities
  • Logic output referenced to VCC
  • Characterized up to 50MHz at 3.3V VCC
  • 5.0V tolerance on input pins
  • Latch-up performance exceeds 250mA per JESD 17
  • Supports standard logic pinouts
  • CMOS output B compatible with AUP1G and LVC1G families

Applications:

  • Telecom
  • Portable applications
  • Servers
  • PC and notebooks

Package:

  • DBV (SOT-23, 5)
  • DCK (SC70, 5)

SN74LV1T126 Features

  • Single-supply voltage translator at 5V, 3.3V, 2.5V, and 1.8V VCC
  • Operating range of 1.8V to 5.5V
  • Up translation:
  • -1.2V (1) to 1.8V at 1.8V V CC
  • -1.8V (1) to 3.3V at 3.3V V CC
  • -1.5V (1) to 2.5V at 2.5V V CC
  • -3.3V to 5.0V at 5.0V VCC
  • Down translation:
  • -3.3V to 1.8V at 1.8V VCC
  • -5.0V to 3.3V at 3.3V VCC
  • -3.3V to 2.5V at 2.5V VCC
  • Logic output is referenced to V CC
  • Output drive:
  • -8.0mA output drive at 5V
  • -7.0mA output drive at 3.3V
  • -3.0mA output drive at 1.8V
  • Characterized up to 50MHz at 3.3V VCC
  • 5.0V tolerance on input pins
  • -40°C to 125°C operating temperature range
  • Latch-up performance exceeds 250mA per JESD 17
  • Supports standard logic pinouts
  • CMOS output B compatible with AUP1G and LVC1G families 1

SN74LV1T126 Applications

SN74LV1T126 Pin Configuration

Figure 5-1. DCK or DBV Package, 5-Pin SC70 or SOT-23 (Top View)

Table 5-1. Pin Functions

PINPINTYPE (1)DESCRIPTION
NAMENO.TYPE (1)DESCRIPTION
OE1IOutput enable, active low
A2IInput A
GND3GGround
Y4OOutput Y
V CC5PPositive supply
  • (1) I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.

Table 5-1. Pin Functions

www.ti.com

SN74LV1T126 Electrical Characteristics

over recommended operating free-air temperature range (unless otherwise noted)

TEST CONDITIONSVT A = 25°CT A = 25°CT A = -40°C to +125°CT A = -40°C to +125°CUNIT
PARAMETERCCMINTYP MAXMIN TYPMAX
V IHV CC = 1.65 V to 1.8 V0.951V
V IHV CC = 2.0 V0.991.03V
V IHV CC = 2.25 V to 2.5 V1.1451.18V
V IHHigh-levelV CC = 2.75 V1.221.25V
V IHinput voltageV CC = 3 V to 3.3 V1.371.39V
V IHV CC = 3.6 V1.471.48V
V IHV CC = 4.5 V to 5.0 V2.022.03V
V IHV CC = 5.5 V2.12.11V
V ILLow-levelV CC = 1.65 V to 2.0 V0.570.55V
V ILLow-levelV CC = 2.25 V to 2.75 V0.750.71V
V ILinput voltageV CC = 3 V to 3.6 V0.80.65V
V ILV CC = 4.5 V to 5.5 V0.80.8V
V OHI OH = -20 μA1.65 V to 5.5 VV CC - 0.1V CC - 0.1V
V OHI OH = -2.0 mA1.65 V1.281.21V
V OH1.8 V1.51.45V
V OHI OH = -3 mA2.3 V21.93V
V OHHigh-levelI OH = -3 mA2.5 V2.252.15V
V OHoutputI OH = -3.0 mA2.782.7V
V OHvoltageI OH = -5.5 mA3.0 V2.62.49V
V OHI OH = -5.5 mA3.3 V2.92.8V
V OHI OH = -4 mA4.24.1V
V OHI OH = -8 mA4.5 V4.13.95V
V OLI OL = 20 μA1.65 V to 5.5 V0.10.1
V OLI OL = 2 mA1.65 V0.20.25
V OLLow-levelI OL = 3 mA2.3 V0.150.2
V OLoutputI OL = 3 mA0.110.15V
V OLvoltageI OL = 5.5 mA3.0 V0.210.252
V OLI OL = 4 mA0.150.2
V OLI OL = 8 mA4.5 V0.30.35
I IInput leakage currentA input; V I = 0 V or V CC0 V, 1.8 V, 2.5 V, 3.3 V, 5.5 V
5.0 V		0.1
1		±1
10		μA
I CCStatic supplyV I = 0 V or V CC ,3.3 V110μA
I CCcurrentI O = 0; open on loading2.5 V110μA
I CCStatic supplyV I = 0 V or V CC ,1.8 V110μA

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETERV CCT A = 25°CT A = 25°CT A = 25°CT A = -40°C to +125°CT A = -40°C to +125°CT A = -40°C to +125°CUNIT
TEST CONDITIONSMINTYPMAXMINTYPMAX
ΔI CCAdditional static supplyOne input at 0.3 V or 3.4 V, Other inputs at 0 or V CC , I O = 05.5 V1.351.5mA
ΔI CCcurrentOne input at 0.3 V or 1.1 V Other inputs at 0 or V CC , I O = 01.8 V1010μA
C iInput capacitanceV I = V CC or GND3.3 V210210pF
C oOutput capacitanceV O = V CC or GND3.3 V2.52.5pF

SN74LV1T126 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) (1)

MINMAXUNIT
V CCSupply voltage range-0.57.0V
V IInput voltage range (2)-0.57.0V
V OVoltage range applied to any output in the high or low state (2)-0.5V CC + 0.5V
I IKInput clamp current V I < 0-20mA
I OKOutput clamp current V O < 0 or V O > V CC±20mA
I OContinuous output current±25mA
Continuous current through V CC or GND±50mA
T JJunction temperature150°C
T stgStorage temperature-65150°C

SN74LV1T126 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted) (1)

MINMAXUNIT
V CCSupply voltageSupply voltage1.65.5V
V IInput voltageInput voltage05.5V
V OOutput voltageOutput voltage0V CCV
I OHHigh-level output currentV CC = 1.8 V-3mA
I OHHigh-level output currentV CC = 2.5 V-5mA
I OHHigh-level output currentV CC = 3.3 V-7mA
I OHHigh-level output currentV CC = 5.0 V-8mA
I OLLow-level output currentV CC = 1.8 V3mA
I OLLow-level output currentV CC = 2.5 V5mA
I OLLow-level output currentV CC = 3.3 V7mA
I OLLow-level output currentV CC = 5.0 V8mA
Δt/ΔvInput transition rise or fall rateV CC = 1.8 V20ns/V
Δt/ΔvInput transition rise or fall rateV CC = 3.3 V or 2.5 V20ns/V
Δt/ΔvInput transition rise or fall rateV CC = 5.0 V20ns/V
T AOperating free-air temperatureOperating free-air temperature-40125°C

SN74LV1T126 Thermal Information

THERMAL METRIC (1)DBV 5 PINSDCK 5 PINSUNIT
R θJA Junction-to-ambient thermal resistance278289.2°C/W

SN74LV1T126 Package Information

PART NUMBERPACKAGE (1)PACKAGE SIZE (2)BODY SIZE (3)
SN74LV1T125DBV (SOT-23, 5)2.90mm × 2.8mm2.9mm x 1.6mm
SN74LV1T125DCK (SC70, 5)2.00mm × 2.1mm2mm × 1.25mm
  • (1) For more information, see Section 12.
  • (2) The package size (length × width) is a nominal value and includes pins, where applicable.
  • (3) The body size (length x width) is a nominal value and does not include pins.

Switching Thresholds for 1.8V to 3.3V Translation

1 Refer to the V IH /VIL and output drive for lower V CC condition.

Other Integrated Circuits

All Integrated Circuits datasheetsAll Texas Instruments datasheets (2,442)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

Ask your AI agent about the SN74LV1T126

Connect SheetsData to Claude, Cursor, Codex or any MCP client and your agent reads this datasheet for you: pinout, limits, register maps and design checks, with the numbers taken from the PDF.

claude mcp add --transport http sheetsdata https://mcp.sheetsdata.com/mcp

Then ask: "Can the SN74LV1T126 run from my 12 V rail? Check it against the datasheet limits."

Create a free account $2 of usage every month, no card needed.