dm74ls298 Fairchild Semiconductor, dm74ls298 Datasheet

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dm74ls298

Manufacturer Part Number
dm74ls298
Description
Quad 2-port Register Multiplexer With Storage
Manufacturer
Fairchild Semiconductor
Datasheet
© 2000 Fairchild Semiconductor Corporation
DM74LS298N
DM74LS298
Quad 2-Port Register Multiplexer with Storage
General Description
The DM74LS298 is a quad 2-port register. It is the logical
equivalent of a quad 2-input multiplexer followed by a quad
4-bit edge-triggered register. A Common Select input
selects between two 4-bit input ports (data sources). The
selected data is transferred to the output register synchro-
nous with the HIGH-to-LOW transition of the Clock input.
Ordering Code:
Logic Symbol
V
GND
Pin Descriptions
Order Number
S
CP
I0
I1
Q
CC
Pin Names
a
a
a
, Q
, I0
, I1
Pin 16
Pin 8
d
d
d
Common Select Inputs
Clock Pulse Input (Active Falling Edge)
Source 0 Data Inputs
Source 1 Data Inputs
Flip-Flip Outputs
Package Number
N16E
Description
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DS009826
Features
Connection Diagram
Truth Table
l
h
H
L
X
Select from two data sources
Fully edge-triggered operation
Typical power dissipation of 65 mW
LOW Voltage Level one setup time prior to the HIGH-to-LOW clock
LOW Voltage Level
Immaterial
HIGH Voltage Level
transition.
HIGH Voltage Level one setup time prior to the HIGH-to-LOW clock
transition.
S
h
h
l
l
Package Description
Inputs
I0
X
X
h
l
x
October 1988
Revised March 2000
I1
X
X
h
l
x
www.fairchildsemi.com
Output
Q
L
H
L
H
x

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dm74ls298 Summary of contents

Page 1

... DM74LS298 Quad 2-Port Register Multiplexer with Storage General Description The DM74LS298 is a quad 2-port register the logical equivalent of a quad 2-input multiplexer followed by a quad 4-bit edge-triggered register. A Common Select input selects between two 4-bit input ports (data sources). The selected data is transferred to the output register synchro- nous with the HIGH-to-LOW transition of the Clock input ...

Page 2

Functional Description This device is a high speed quad 2-port register. It selects four bits of data from two sources (ports) under the control of a Common Select input (S). The selected data is transferred to the 4-bit output register ...

Page 3

Absolute Maximum Ratings Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range Recommended Operating Conditions Symbol Parameter V Supply Voltage CC V HIGH Level Input Voltage IH V LOW Level Input Voltage IL I HIGH Level Output ...

Page 4

Physical Dimensions inches (millimeters) unless otherwise noted 16-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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