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Description : OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS

OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS

The SN54/74LS540 and SN54/74LS541 are OCTAL buffers and line drivers WITH the same functions as the LS240 and LS241, but WITH pinouts on the opposite side of the package.
These device types are designed to be used as memory address drivers, clock drivers and bus-oriented transmitters/receivers. These devices are especially useful as output ports for the microprocessors, allowing ease of layout and greater PC board density.

• Hysteresis at Inputs to Improve Noise Margin
• PNP Inputs Reduce Loading
3-STATE OUTPUTS Drive Bus Lines
• Inputs and OUTPUTS Opposite Side of Package, Allowing Easier Interface to Microprocessors
• Input Clamp Diodes Limit High-Speed Termination Effects

Part Name(s) : HD74LS244
Hitachi
Hitachi -> Renesas Electronics
Description : OCTAL Buffers/Line Drivers/Line Receivers (non inverted three-state OUTPUTS)

OCTAL Buffers/Line Drivers/Line Receivers (non inverted three-state OUTPUTS)

Renesas
Renesas Electronics
Description : OCTAL Buffers / Line Drivers / Line Receivers (non inverted three-state OUTPUTS)

OCTAL Buffers / Line Drivers / Line Receivers (non inverted three-state OUTPUTS)

Renesas
Renesas Electronics
Description : OCTAL Buffers / Line Drivers / Line Receivers (non inverted three-state OUTPUTS)

OCTAL Buffers / Line Drivers / Line Receivers (non inverted three-state OUTPUTS)

Description : OCTAL Buffers / Line Drivers / Line Receivers (inverted three-state OUTPUTS)

OCTAL Buffers / Line Drivers / Line Receivers (inverted three-state OUTPUTS)

Description : OCTAL Buffers/Line Drivers WITH 3-STATE OUTPUTS

General Description
The 74F240, 74F241 and 74F244 are OCTAL buffers and line drivers designed to be employed as memory and address drivers, clock drivers and bus-oriented transmitters/receiv ers which provide improved PC and board density.

Features
3-STATE OUTPUTS drive bus lines or buffer memoryaddress registers
OUTPUTS sink 64 mA (48 mA mil)
■12 mA source current
■Input clamp diodes limit high-speed termination effects

Part Name(s) : HD74LVCZ244A
Hitachi
Hitachi -> Renesas Electronics
Description : OCTAL Buffers / Line Drivers WITH 3–state OUTPUTS

Description
The HD74LVCZ244A has eight line drivers WITH three state OUTPUTS in a 20 pin package. This device is a noninverting buffer and has two active low enables (1G and 2G). Each enable independently controls four buffers.

Features
• VCC = 2.7 to 5.5 V
• All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V)
• All OUTPUTS VO (Max) = 5.5 V (@VCC = 0 V or output off state)
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
• High impedance state during power up and power down
• Power off disables OUTPUTS, permitting live insertion
• High output current ±24 mA (@VCC = 3.0 to 5.5 V)

Description : OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

DESCRIPTION
The U74AC244 is a OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS. It is organized as two 4-bit BUFFERS/DRIVERS WITH separate output-enable ( OE ) inputs. When OE is high, the Y OUTPUTS are in a high-impedance state, and the OUTPUTS neither load nor drive the bus lines. When OE is low, the device passes noninverted data from the A inputs to the Y OUTPUTS

FEATURES
* Wide supply voltage range from 2V to 6V
* Max tpd of 7 ns from A to Y at 5V
* Low power consumption, ICC = 4 μA (Max.) at 5.5V
* ±24 mA output driver at 5.5V

Renesas
Renesas Electronics
Description : OCTAL Buffers / Line Drivers WITH 3–state OUTPUTS

Description
The HD74LVCZ244A has eight line drivers WITH three state OUTPUTS in a 20 pin package. This device is a noninverting buffer and has two active low enables (1G and 2G). Each enable independently controls four buffers.

Features
• VCC = 2.7 to 5.5 V
• All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V)
• All OUTPUTS VO (Max) = 5.5 V (@VCC = 0 V or output off state)
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
• High impedance state during power up and power down
• Power off disables OUTPUTS, permitting live insertion
• High output current ±24 mA (@VCC = 3.0 to 5.5 V)

Part Name(s) : HD74LVC2244A
Hitachi
Hitachi -> Renesas Electronics
Description : OCTAL Buffers / Line Drivers WITH 3–state OUTPUTS

Description
The HD74LVC2244A has eight line drivers WITH three state OUTPUTS in a 20 pin package. This device is a noninverting buffer and has two active low enables (1G and 2G). Each enable independently controls four buffers.

Features
• VCC = 1.65 to 5.5 V
• All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V)
• All OUTPUTS VO (Max) = 5.5 V (@VCC = 0 V or output off state)
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
• High output current ±12 mA (@VCC = 3.0 to 5.5 V)
• All OUTPUTS have equivalent 26 Ω series resistors, so no external resistors are required

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