SN74LVT244B Series

8-ch, 2.7-V to 3.6-V buffers with TTL-compatible CMOS inputs and 3-state outputs

Catalog

8-ch, 2.7-V to 3.6-V buffers with TTL-compatible CMOS inputs and 3-state outputs

Part	Number of Bits per Element	Operating Temperature [Max]	Operating Temperature [Min]	Number of Elements	Supplier Device Package	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Output Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Package / Case [y]	Package / Case	Package / Case [x]	Logic Type	Package / Case [y]	Package / Case	Package / Case
Texas Instruments SN74LVT244BPWR	4	85 °C	-40 °C	2	20-TSSOP	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount	4.4 mm	20-TSSOP	0.173 in	Buffer Non-Inverting
Texas Instruments SN74LVT244BDW	4	85 °C	-40 °C	2	20-SOIC	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount	0.295 in	20-SOIC		Buffer Non-Inverting	7.5 mm
Texas Instruments SN74LVT244BPWRG4	4	85 °C	-40 °C	2	20-TSSOP	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount	4.4 mm	20-TSSOP	0.173 in	Buffer Non-Inverting
Texas Instruments SN74LVT244BDBR	4	85 °C	-40 °C	2	20-SSOP	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount		20-SSOP		Buffer Non-Inverting
Texas Instruments SN74LVT244BNSR	4	85 °C	-40 °C	2	20-SO	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount		20-SOIC		Buffer Non-Inverting		0.209 "	5.3 mm
Texas Instruments SN74LVT244BPWG4	4	85 °C	-40 °C	2	20-TSSOP	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount	4.4 mm	20-TSSOP	0.173 in	Buffer Non-Inverting
Texas Instruments SN74LVT244BDBRE4	4	85 °C	-40 °C	2	20-SSOP	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount		20-SSOP		Buffer Non-Inverting
Texas Instruments SN74LVT244BDWR	4	85 °C	-40 °C	2	20-SOIC	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount	0.295 in	20-SOIC		Buffer Non-Inverting	7.5 mm
Texas Instruments SN74LVT244BPW	4	85 °C	-40 °C	2	20-TSSOP	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount	4.4 mm	20-TSSOP	0.173 in	Buffer Non-Inverting
Texas Instruments SN74LVT244BRGYR	4	85 °C	-40 °C	2	20-VQFN (3.5x4.5)	64 mA	32 mA	3-State	2.7 V	3.6 V	Surface Mount		20-VFQFN Exposed Pad		Buffer Non-Inverting

Catalog

8-ch, 2.7-V to 3.6-V buffers with TTL-compatible CMOS inputs and 3-state outputs

Key Features

• Supports Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)Supports Unregulated Battery Operation Down to 2.7 VTypical VOLP(Output Ground Bounce)<0.8 V at VCC= 3.3 V, TA= 25°CIoffand Power-Up 3-State Support Hot InsertionLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)Supports Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)Supports Unregulated Battery Operation Down to 2.7 VTypical VOLP(Output Ground Bounce)<0.8 V at VCC= 3.3 V, TA= 25°CIoffand Power-Up 3-State Support Hot InsertionLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)

Description

This octal buffer and line driver is designed specifically for low-voltage (3.3-V) VCCoperation, but with the capability to provide a TTL interface to a 5-V system environment. The SN74LVT244B is organized as two 4-bit line drivers with separate output-enable (OE)\ inputs. When OE\ is low, the device passes 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 VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for hot-insertion applications using Ioffand power-up 3-state. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is 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. This octal buffer and line driver is designed specifically for low-voltage (3.3-V) VCCoperation, but with the capability to provide a TTL interface to a 5-V system environment. The SN74LVT244B is organized as two 4-bit line drivers with separate output-enable (OE)\ inputs. When OE\ is low, the device passes 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 VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for hot-insertion applications using Ioffand power-up 3-state. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is 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.