dm74ls244 National Semiconductor Corporation, dm74ls244 Datasheet

no-image

dm74ls244

Manufacturer Part Number
dm74ls244
Description
Octal Tri-statee Buffers/line Drivers/line Receivers
Manufacturer
National Semiconductor Corporation
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
dm74ls244J
Manufacturer:
NS
Quantity:
6 218
Part Number:
dm74ls244N
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Part Number:
dm74ls244SJX
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Part Number:
dm74ls244WM
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
dm74ls244WMX
Manufacturer:
national
Quantity:
500
Part Number:
dm74ls244WMX
Manufacturer:
FSC
Quantity:
51
C 1995 National Semiconductor Corporation
54LS244 DM74LS244 Octal TRI-STATE
Buffers Line Drivers Line Receivers
General Description
These buffers line drivers are designed to improve both the
performance and PC board density of TRI-STATE buffers
drivers employed as memory-address drivers clock drivers
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 outputs
and can be used to drive terminated lines down to 133X
Features
Y
Y
Y
Connection Diagram
Function Table
TRI-STATE is a registered trademark of National Semiconductor Corporation
TRI-STATE outputs drive bus lines directly
PNP inputs reduce DC loading on bus lines
Hysteresis at data inputs improves noise margins
Order Number 54LS244DMQB 54LS244FMQB 54LS244LMQB
TL F 8442
See NS Package Number E20A J20A M20B N20A or W20A
L
H
X
Z
e
e
e
e
DM74LS244WM or DM74LS244N
Low Logic Level
Either Low or High Logic Level
High Impedance
High Logic Level
G
H
L
L
Inputs
Dual-In-Line Package
A
H
L
X
Y
Y
Y
Y
Y
Typical I
Typical I
Typical propagation delay times
Typical enable disable time 18 ns
Typical power dissipation (enabled)
54LS
74LS
54LS
74LS
Inverting
Noninverting
Inverting
Noninverting
Output
Y
H
L
Z
OL
OH
(sink current)
12 mA
24 mA
b
b
(source current)
12 mA
15 mA
10 5 ns
12 ns
130 mW
135 mW
TL F 8442 – 1
RRD-B30M105 Printed in U S A
August 1989

Related parts for dm74ls244

dm74ls244 Summary of contents

Page 1

... DM74LS244 Octal TRI-STATE Buffers Line Drivers Line Receivers General Description These buffers line drivers are designed to improve both the performance and PC board density of TRI-STATE buffers drivers employed as memory-address drivers clock drivers and bus-oriented transmitters receivers Featuring 400 mV of hysteresis at each low current PNP data line input they ...

Page 2

... Max Max 54LS Max (Note DM74 Max Outputs High e CC Outputs Low Outputs Disabled 2 DM74LS244 Units Min Nom Max Typ Min Max Units (Note ...

Page 3

Switching Characteristics 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 PZH High Level ...

Page 4

Physical Dimensions inches (millimeters) Ceramic Leadless Chip Carrier Package (E) 20-Lead Ceramic Dual-In-Line Package (J) Order Number 54LS244LMQB NS Package Number E20A Order Number 54LS244DMQB NS Package Number J20A 4 ...

Page 5

... Physical Dimensions inches (millimeters) (Continued) 20-Lead Wide Small Outline Molded Package (M) 20-Lead Molded Dual-In-Line Package (N) Order Number DM74LS244WM NS Package Number M20B Order Number DM74LS244N NS Package Number N20A 5 ...

Page 6

Physical Dimensions inches (millimeters) (Continued) 20-Lead Ceramic Flat Package (W) LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR ...

Related keywords