74LVCH244 Series

8-ch, 1.65-V to 3.6-V buffers with bus-hold and 3-state outputs

Catalog(11 parts)

Part	Output Type	Logic Type	Number of Elements▲▼	Package / Case▲▼	Package / Case▲▼	Package / Case	Current - Output High, Low▲▼	Current - Output High, Low▲▼	Operating Temperature▲▼	Operating Temperature▲▼	Mounting Type	Supplier Device Package	Number of Bits per Element▲▼	Voltage - Supply▲▼	Voltage - Supply▲▼
Texas Instruments SN74LVCH244APWRG4 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP	3-State	Buffer, Non-Inverting	2 ul	0.004394200164824724 m	0.004399999976158142 m	20-TSSOP	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-TSSOP	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244ADWR Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC	3-State	Buffer, Non-Inverting	2 ul	0.007493000011891127 m, 0.007499999832361937 m		20-SOIC	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-SOIC	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244ADBQR Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SSOP	3-State	Buffer, Non-Inverting	2 ul	0.003911599982529879 m	0.003899999894201755 m	20-SSOP	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-SSOP	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244APWR Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP	3-State	Buffer, Non-Inverting	2 ul	0.004394200164824724 m	0.004399999976158142 m	20-TSSOP	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-TSSOP	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244APWT Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP	3-State	Buffer, Non-Inverting	2 ul	0.004394200164824724 m	0.004399999976158142 m	20-TSSOP	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-TSSOP	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244ADBR Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SSOP	3-State	Buffer, Non-Inverting	2 ul	0.0052999998442828655 m, 0.005308600142598152 m		20-SSOP	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-SSOP	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244APWRE4 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP	3-State	Buffer, Non-Inverting	2 ul	0.004394200164824724 m	0.004399999976158142 m	20-TSSOP	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-TSSOP	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244ANS Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SO	3-State	Buffer, Non-Inverting	2 ul	0.0052999998442828655 m, 0.005308600142598152 m		20-SOIC	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-SO	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244ARGYR Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-VQFN (3.5x4.5)	3-State	Buffer, Non-Inverting	2 ul			20-VFQFN Exposed Pad	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-VQFN (3.5x4.5)	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244ANSR Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SO	3-State	Buffer, Non-Inverting	2 ul	0.0052999998442828655 m, 0.005308600142598152 m		20-SOIC	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-SO	4 ul	3.5999999046325684 V	1.649999976158142 V
Texas Instruments SN74LVCH244ARGYRG4 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-VQFN (3.5x4.5)	3-State	Buffer, Non-Inverting	2 ul			20-VFQFN Exposed Pad	0.024000000208616257 A	0.024000000208616257 A	85 °C	-40 °C	Surface Mount	20-VQFN (3.5x4.5)	4 ul	3.5999999046325684 V	1.649999976158142 V

Key Features

• Operate From 1.65 V to 3.6 VInputs Accept Voltages to 5.5 VMax tpdof 5.9 ns at 3.3 VTypical VOLP(Output Ground Bounce) <0.8 V at VCC= 3.3 V, TA= 25°CTypical VOHV(Output VOHUndershoot) >2 V at VCC= 3.3 V, TA= 25°CSupport Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC)IoffSupports Partial-Power-Down Mode OperationBus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown ResistorsLatch-Up Performance Exceeds 250 mA Per JESD 17ESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)Operate From 1.65 V to 3.6 VInputs Accept Voltages to 5.5 VMax tpdof 5.9 ns at 3.3 VTypical VOLP(Output Ground Bounce) <0.8 V at VCC= 3.3 V, TA= 25°CTypical VOHV(Output VOHUndershoot) >2 V at VCC= 3.3 V, TA= 25°CSupport Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC)IoffSupports Partial-Power-Down Mode OperationBus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown ResistorsLatch-Up Performance Exceeds 250 mA Per JESD 17ESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)

Description

The SN54LVCH244A octal buffer/line driver is designed for 2.7-V to 3.6-V VCCoperation, and the SN74LVCH244A octal buffer/line driver is designed for 1.65-V to 3.6-V VCCoperation. These devices are organized as two 4-bit line drivers with separate output-enable (OE) inputs. WhenOEis low, these devices pass data from the A inputs to the Y outputs. WhenOEis high, the outputs are in the high-impedance state. Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment. These devices are fully specified for partial-power-down applications using Ioff. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. To ensure the high-impedance state during power up or power down,OEshould be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The SN54LVCH244A octal buffer/line driver is designed for 2.7-V to 3.6-V VCCoperation, and the SN74LVCH244A octal buffer/line driver is designed for 1.65-V to 3.6-V VCCoperation. These devices are organized as two 4-bit line drivers with separate output-enable (OE) inputs. WhenOEis low, these devices pass data from the A inputs to the Y outputs. WhenOEis high, the outputs are in the high-impedance state. Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment. These devices are fully specified for partial-power-down applications using Ioff. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. To ensure the high-impedance state during power up or power down,OEshould be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.