DM74AS244WM

DM74AS244WM Datasheet

DM74AS240<br>• DM74AS244 3-STATE Bus Driver/Receiver

Part	Datasheet
DM74AS244WM	DM74AS244WM (pdf)

Related Parts	Information
DM74AS244WMX	DM74AS244WMX
DM74AS244N	DM74AS244N
DM74AS240N	DM74AS240N
DM74AS240WM	DM74AS240WM
DM74AS244SJ	DM74AS244SJ
DM74AS244SJX	DM74AS244SJX
DM74AS240WMX	DM74AS240WMX

PDF Datasheet Preview
DM74AS240 • DM74AS244 3-STATE Bus Driver/Receiver DM74AS240 • DM74AS244 3-STATE Bus Driver/Receiver This family of Advance Schottky 3-STATE Bus circuits are designed to provide either bidirectional or unidirectional buffer interface in Memory, Microprocessor, and Communication Systems. The output characteristics of the circuits have low impedance sufficient to drive terminated transmission lines down to The input characteristics of the circuits likewise have a high impedance so it will not significantly load the transmission line. The package contains eight 3-STATE buffers organized with four buffers having a common 3-STATE enable gate. The DM74AS240 and DM74AS244 are eight wide in a 20 pin package, and may be used as a 4 wide bidirectional or eight wide unidirectional. The buffer selection includes inverting and noninverting, with enable or disable 3-STATE control. s Advanced oxide-isolated, ion-implanted Schottky TTL process s Improved switching performance with less power dissipation compared with Schottky counterpart s Functional and pin compatible with 74LS and Schottky counterpart s Switching response specified into and 50 pF s Specified to interface with CMOS at VOH = VCC − 2V Ordering Code: Order Number Package Number Package Description DM74AS240WM M20B 20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide DM74AS240N N20A 20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide DM74AS244WM M20B 20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide DM74AS244N N20A 20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagrams DM74AS240 DM74AS244 Function Tables DM74AS240 Inputs L = LOW Logic Level Output Y H L Z H = HIGH Logic Level DM74AS244 Inputs Output X = Either LOW or HIGH Logic Level Z = High Impedance 2000 Fairchild Semiconductor Corporation DS006298 DM74AS240 • DM74AS244 Absolute Maximum Ratings Note 1 Supply Voltage, VCC Input Voltage Applied to Disabled Output Operating Free Air Temperature Range Storage Temperature Range Typical N Package M Package 7V 5.5V 0°C to +70°C −65°C to +150°C 57.0°C/W 76.0°C/W Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Recommended Operating Conditions VCC VIH VIL IOH IOL TA Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature Units −15 Electrical Characteristics over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C. Parameter Conditions Input Clamp Voltage VCC = 4.5V, IIN = −18 mA HIGH Level VCC = 4.5V, IOH = −3 mA Output Voltage VCC = 4.5V, IOH = Max IOH = −2 mA, VCC = 4.5V to 5.5V LOW Level Output Voltage VCC = 4.5V, IOL = Max Input Current at Max Input Voltage VCC = 5.5V

PDF Datasheet Preview

DM74AS240
• DM74AS244 3-STATE Bus Driver/Receiver

DM74AS240
• DM74AS244 3-STATE Bus Driver/Receiver

This family of Advance Schottky 3-STATE Bus circuits are designed to provide either bidirectional or unidirectional buffer interface in Memory, Microprocessor, and Communication Systems. The output characteristics of the circuits have low impedance sufficient to drive terminated transmission lines down to The input characteristics of the circuits likewise have a high impedance so it will not significantly load the transmission line. The package contains eight 3-STATE buffers organized with four buffers having a common 3-STATE enable gate. The DM74AS240 and DM74AS244 are eight wide in a 20 pin package, and may be used as a 4 wide bidirectional or eight wide unidirectional. The buffer selection includes inverting and noninverting, with enable or disable 3-STATE control.
s Advanced oxide-isolated, ion-implanted Schottky TTL process
s Improved switching performance with less power dissipation compared with Schottky counterpart
s Functional and pin compatible with 74LS and Schottky counterpart
s Switching response specified into and 50 pF s Specified to interface with CMOS at VOH = VCC − 2V
Ordering Code:

Order Number Package Number

Package Description

DM74AS240WM

M20B
20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide

DM74AS240N

N20A
20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide

DM74AS244WM

M20B
20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide

DM74AS244N

N20A
20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagrams

DM74AS240

DM74AS244

Function Tables

DM74AS240

Inputs

L = LOW Logic Level

Output Y H L Z

H = HIGH Logic Level

DM74AS244

Inputs

Output

X = Either LOW or HIGH Logic Level Z = High Impedance
2000 Fairchild Semiconductor Corporation DS006298

DM74AS240
• DM74AS244

Absolute Maximum Ratings Note 1

Supply Voltage, VCC Input Voltage Applied to Disabled Output Operating Free Air Temperature Range Storage Temperature Range Typical

N Package M Package
7V 5.5V 0°C to +70°C −65°C to +150°C
57.0°C/W 76.0°C/W

Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation.

Recommended Operating Conditions

VCC VIH VIL IOH IOL TA

Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Free Air Operating Temperature

Units
−15

Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C.

Parameter

Conditions

Input Clamp Voltage

VCC = 4.5V, IIN = −18 mA

HIGH Level

VCC = 4.5V, IOH = −3 mA

Output Voltage

VCC = 4.5V, IOH = Max

IOH = −2 mA, VCC = 4.5V to 5.5V

LOW Level Output Voltage

VCC = 4.5V, IOL = Max

Input Current at Max Input Voltage VCC = 5.5V

More datasheets: SX0780 | SX0786/63 | SX0794/63 | SX0790 | SX0792/63 | SX0790/63 | SX0793 | SX0792 | 26800B-560 | DM74AS244WMX

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Datasheet ID: DM74AS244WM 513722