SN74LVTH244A

Name: SN74LVTH244A
Brand: TI
SKU: SN74LVTH244A
Price: 0.269 USD

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8-Kanal-Puffer mit Bus-Hold, 2,7 bis 3,6 V mit TTL-kompatiblen CMOS-Eingängen und Tri-State-Ausgänge

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Datenblatt

document-pdfAcrobat SN54LVTH244A, SN74LVTH244A datasheet (Rev. J) (Englisch)

SN74LVTH244A

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Datenblatt

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Produktdetails

Technology family

LVT

Supply voltage (min) (V)

2.7

Supply voltage (max) (V)

3.6

Number of channels

8

IOL (max) (mA)

64

Supply current (max) (µA)

5000

IOH (max) (mA)

-32

Input type

TTL-Compatible CMOS

Output type

3-State

Features

Bus-hold, Over-voltage tolerant inputs, Partial power down (Ioff), Power up 3-state, Ultra high speed (tpd <5ns)

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Technology family

LVT

Supply voltage (min) (V)

2.7

Supply voltage (max) (V)

3.6

Number of channels

8

IOL (max) (mA)

64

Supply current (max) (µA)

5000

IOH (max) (mA)

-32

Input type

TTL-Compatible CMOS

Output type

3-State

Features

Bus-hold, Over-voltage tolerant inputs, Partial power down (Ioff), Power up 3-state, Ultra high speed (tpd <5ns)

Rating

Catalog

Operating temperature range (°C)

-40 to 85

SOIC (DW)

20

131.84 mm² 12.8 x 10.3

SOP (NS)

20

98.28 mm² 12.6 x 7.8

SSOP (DB)

20

56.16 mm² 7.2 x 7.8

TSSOP (PW)

20

41.6 mm² 6.5 x 6.4

VQFN (RGY)

20

15.75 mm² 4.5 x 3.5

Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V V_CC)
Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
Support Unregulated Battery Operation Down to 2.7 V
I_off and Power-Up 3-State Support Hot Insertion
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
Latch-Up Performance Exceeds 500 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)

Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V V_CC)
Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
Support Unregulated Battery Operation Down to 2.7 V
I_off and Power-Up 3-State Support Hot Insertion
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
Latch-Up Performance Exceeds 500 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)

These octal buffers and line drivers are designed specifically for low-voltage (3.3-V) V_CC operation, but with the capability to provide a TTL interface to a 5-V system environment.

The ’LVTH244A devices are organized as two 4-bit line drivers with separate output-enable (OE)\ inputs. When OE\ is low, the devices pass data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

These devices are fully specified for hot-insertion applications using I_off and power-up 3-state. The I_off circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

These octal buffers and line drivers are designed specifically for low-voltage (3.3-V) V_CC operation, but with the capability to provide a TTL interface to a 5-V system environment.

The ’LVTH244A devices are organized as two 4-bit line drivers with separate output-enable (OE)\ inputs. When OE\ is low, the devices pass data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

These devices are fully specified for hot-insertion applications using I_off and power-up 3-state. The I_off circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

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Alle anzeigen 17

	Typ	Titel	Datum
*	Data sheet	SN54LVTH244A, SN74LVTH244A datasheet (Rev. J)	08 Okt 2003
	Application note	Implications of Slow or Floating CMOS Inputs (Rev. E)	26 Jul 2021
	Application note	An Overview of Bus-Hold Circuit and the Applications (Rev. B)	17 Sep 2018
	Selection guide	Logic Guide (Rev. AB)	12 Jun 2017
	Application note	Understanding and Interpreting Standard-Logic Data Sheets (Rev. C)	02 Dez 2015
	User guide	LOGIC Pocket Data Book (Rev. B)	16 Jan 2007
	Application note	Semiconductor Packing Material Electrostatic Discharge (ESD) Protection	08 Jul 2004
	Application note	TI IBIS File Creation, Validation, and Distribution Processes	29 Aug 2002
	Application note	16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B)	22 Mai 2002
	Application note	Power-Up 3-State (PU3S) Circuits in TI Standard Logic Devices	10 Mai 2002
	Selection guide	Advanced Bus Interface Logic Selection Guide	09 Jan 2001
	Application note	LVT-to-LVTH Conversion	08 Dez 1998
	Application note	LVT Family Characteristics (Rev. A)	01 Mär 1998
	Application note	Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A)	01 Aug 1997
	Application note	Input and Output Characteristics of Digital Integrated Circuits	01 Okt 1996
	Application note	Live Insertion	01 Okt 1996
	Application note	Understanding Advanced Bus-Interface Products Design Guide	01 Mai 1996

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