dm74s244 Fairchild Semiconductor, dm74s244 Datasheet

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dm74s244

Manufacturer Part Number
dm74s244
Description
Octal 3-state Buffer/line Driver/line Receiver
Manufacturer
Fairchild Semiconductor
Datasheet

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© 2000 Fairchild Semiconductor Corporation
DM74S240N
DM74S241N
DM74S244N
DM74S240 • DM74S241 • DM74S244
Octal 3-STATE Buffer/Line Driver/Line Receiver
General Description
These buffers/line drivers are designed to improve both the
performance and PC board density of 3-STATE buffers/
drivers employed as memory-address drivers, clock driv-
ers, and bus-oriented transmitters/receivers. Featuring 400
mV of hysteresis at each low current PNP data line input,
they provide improved noise rejection and high fanout out-
puts, and can be used to drive terminated lines down to
133 .
Ordering Code:
Connection Diagrams
Order Number
Package Number
DM74S240N
N20A
N20A
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DS006478
DM74S244N
Features
3-STATE outputs drive bus lines directly
PNP inputs reduce DC loading on bus lines
Hysteresis at data inputs improves noise margins
Typical I
Typical I
Typical propagation delay times
Typical enable/disable times 9 ns
Typical power dissipation (enabled)
Inverting
Noninverting
Inverting
Noninverting
Package Description
OL
OH
(sink current)
(source current)
4.5 ns
6 ns
450 mW
538 mW
DM74S241N
August 1986
Revised May 2000
64 mA
15 mA
www.fairchildsemi.com

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dm74s244 Summary of contents

Page 1

... DM74S240 • DM74S241 • DM74S244 Octal 3-STATE Buffer/Line Driver/Line Receiver General Description These buffers/line drivers are designed to improve both the performance and PC board density of 3-STATE buffers/ drivers employed as memory-address drivers, clock driv- ers, and bus-oriented transmitters/receivers. Featuring 400 mV of hysteresis at each low current PNP data line input, ...

Page 2

... OH Min I Max Max V 2. 0.5V O Max V 5.5V I Max V 2.7V I Max V 0.5V Any A I Any G Max (Note 3) 50 DM74S240 DM74S241, DM74244 DM74S240 DM74S241, DM74244 DM74S240 DM74S241, DM74S244 2 Max Units 5. 0 Typ Max Units (Note 2) 1.2 V 0.4 V 3 ...

Page 3

Switching Characteristics 5V Symbol Parameter t Propagation Delay Time PLH LOW-to-HIGH Level Output t Propagation Delay Time PHL HIGH-to-LOW Level Output t Output Enable Time to PZL LOW Level t Output Enable Time to ...

Page 4

Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at ...

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