Freelance Electronics Components Distributor
Closed Dec 25th-26th
800-300-1968

We Stock Hard to Find Parts
My Account | My Orders | My Cart
Questions? (800) 300-1968

MM74C244N

Part # MM74C244N
Description IC BUFF/DVR TRI-ST DUAL 20DIP
Category IC
Availability In Stock
Qty 413
Qty Price
1 - 38 $3.91855
39 - 96 $3.11703
97 - 187 $2.93891
188 - 283 $2.73111
284 + $2.43425
Manufacturer Available Qty
National Semiconductor Corp
Date Code: 9042
  • Shipping Freelance Stock: 36
    Ships Immediately
National Semiconductor Corp
Date Code: 9624
  • Shipping Freelance Stock: 1
    Ships Immediately
National Semiconductor Corp
Date Code: 9052
  • Shipping Freelance Stock: 138
    Ships Immediately
National Semiconductor Corp
Date Code: 9112
  • Shipping Freelance Stock: 113
    Ships Immediately
National Semiconductor Corp
  • Shipping Freelance Stock: 35
    Ships Immediately
National Semiconductor Corp
Date Code: 9024
  • Shipping Freelance Stock: 16
    Ships Immediately
National Semiconductor Corp
Date Code: 8424
  • Shipping Freelance Stock: 36
    Ships Immediately
National Semiconductor Corp
Date Code: 8424
  • Shipping Freelance Stock: 36
    Ships Immediately
National Semiconductor Corp
Date Code: 9624
  • Shipping Freelance Stock: 2
    Ships Immediately

Related Items

MM74C04J
National Semiconductor Corp
IC
MM74C04J
$2.62048
MM74C08J
National Semiconductor Corp
IC
MM74C08J
$29.78798
MM74C160N
National Semiconductor Corp
IC
MM74C160N
$16.44991
MM74C161N
National Semiconductor Corp
IC
MM74C161N
$1.89775
MM74C164N
National Semiconductor Corp
IC
MM74C164N
$8.71325
MM74C165N
National Semiconductor Corp
IC
MM74C165N
$20.96100


Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

© 2002 Fairchild Semiconductor Corporation DS005905 www.fairchildsemi.com
October 1987
Revised May 2002
MM74C240 • MM74C244 Inverting • Non-Inverting Octal Buffer and Line Driver with 3-STATE Outputs
MM74C240 • MM74C244
Inverting • Non-Inverting Octal Buffer and
Line Driver with 3-STATE Outputs
General Description
The MM74C240 and MM74C244 octal buffers and line
drivers are monolithic complementary MOS (CMOS) inte-
grated circuits with 3-STATE outputs. These outputs have
been specially designed to drive highly capacitive loads
such as bus-oriented systems. These devices have a fan
out of 6 low power Schottky loads. A high logic level on the
output disable control input G makes the outputs go into
the high impedance state.
Features
■ Wide supply voltage range (3V to 15V)
■ High noise immunity (0.45 V
CC
typ)
■ Low power consumption
■ High capacitive load drive capability
■ 3-STATE outputs
■ Input protection
■ TTL compatibility
■ 20-pin dual-in-line package
■ High speed 25 ns (typ.) @ 10V, 50 pF (MM74C244)
Ordering Code:
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagrams
MM74C240
(Top View)
MM74C244
(Top View)
Order Number Package Number Package Description
MM74C240WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
MM74C240N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
MM74C244WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
MM74C244N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
www.fairchildsemi.com 2
MM74C240 • MM74C244
Logic Diagrams
MM74C240 MM74C244
Truth Tables
MM74C240
1 = HIGH
0 = LOW
MM74C244
X = Don’t Care
Z = 3-STATE
ODA IA OA
1XZ
1XZ
001
010
ODB IB OB
1XZ
1XZ
001
010
ODA IA OA
1XZ
1XZ
000
011
ODB IB OB
1XZ
1XZ
000
011
3 www.fairchildsemi.com
MM74C240 • MM74C244
Absolute Maximum Ratings(Note 1)
Note 1: “Absolute Maximum Ratings” are those values beyond which the
safety of the device cannot be guaranteed. Except for “Operating Range”
they are not meant to imply that the devices should be operated at these
limits. The Electrical Characteristics table provides conditions for actual
device operation.
DC Electrical Characteristics
Min/Max limits apply across temperature range, unless otherwise noted
Voltage at Any Pin −0.3V to V
CC
+ 0.3V
Operating Temperature Range
−55°C to +125°C
Storage Temperature Range
−65°C to +150°C
Power Dissipation
Dual-In-Line 700 mW
Small Outline 500 mW
Operating V
CC
Range 3V to 15V
Absolute Maximum V
CC
18V
Lead Temperature
(Soldering, 10 seconds) 260
°C
Symbol Parameter Conditions Min Typ Max Units
CMOS TO CMOS
V
IN(1)
Logical “1” Input Voltage V
CC
= 5V 3.5
V
V
CC
= 10V 8.0
V
IN(0)
Logical “0” Input Voltage V
CC
= 5V 1.5
V
V
CC
= 10V 2.0
V
OUT(1)
Logical “1” Output Voltage V
CC
= 5V, I
O
= −10 µA4.5
V
V
CC
= 10V, I
O
= −10 µA9.0
V
OUT(0)
Logical “0” Output Voltage V
CC
= 5V, I
O
= 10 µA0.5
V
V
CC
= 10V, I
O
= 10 µA1.0
I
OZ
3-STATE Output Current V
CC
= 10V, OD = V
IH
±10 µA
I
IN(1)
Logical “1” Input Current V
CC
= 15V, V
IN
= 15V 0.005 1.0 µA
I
IN(0)
Logical “0” Input Current V
CC
= 15V, V
IN
= 0V −1.0 −0.005 µA
I
CC
Supply Current V
CC
= 15V 0.05 300 µA
CMOS/LPTTL INTERFACE
V
IN(1)
Logical “1” Input Voltage V
CC
= 4.75V V
CC
− 1.5 V
V
IN(0)
Logical “0” Input Voltage V
CC
= 4.75V 0.8 V
V
OUT(1)
Logical “1” Output Voltage V
CC
= 4.75V, I
O
= −450 µAV
CC
− 0.4 V
V
CC
= 4.75V, I
O
= −2.2 mA 2.4 V
V
OUT(0)
Logical “0” Output Voltage V
CC
= 4.75V, I
O
= 2.2 mA 0.4 V
OUTPUT DRIVE (See Family Characteristics Data Sheet) (Short Circuit Current)
I
SOURCE
Output Source Current V
CC
= 5V, V
OUT
= 0V −14 −30 mA
(P-Channel) T
A
= 25°C
V
CC
= 10V, V
OUT
= 0V −36 −70 mA
T
A
= 25°C
I
SINK
Output Sink Current V
CC
= 5V, V
OUT
= V
CC
12 20 mA
(N-Channel) T
A
= 25°C
V
CC
= 10V, V
OUT
= V
CC
48 70 mA
T
A
= 25°C
123NEXT
Address
Freelance Electronics
13197 Sandoval Street
Santa Fe Springs, CA 90670
 
Hours of Operation  (Holiday Hours)
Monday-Friday 7:30am-4:30pm PST
(Deadline for next day shipment 2:00pm PST)
Seal
Government Cage code#-1V4R6
Duns Number# 788130532
Certified Small Disadvantaged Business
Customer Service
Company
Information
Connect with Us
Twitter Facebook Instagra,
This site is protected by Trustwave's Trusted Commerce program