DM74LS491N
vs
DM74LS491N
feature comparison
All Stats
Differences Only
Rohs Code
Part Life Cycle Code
Obsolete
Obsolete
Ihs Manufacturer
NATIONAL SEMICONDUCTOR CORP
NATIONAL SEMICONDUCTOR CORP
Package Description
DIP, DIP24,.3
DIP, DIP24,.3
Reach Compliance Code
unknown
unknown
HTS Code
8542.39.00.01
8542.39.00.01
Samacsys Manufacturer
National Semiconductor
Additional Feature
6 MIDDLE BITS CAN BE SET H/L AS A GROUP
6 MIDDLE BITS CAN BE SET H/L AS A GROUP
Count Direction
BIDIRECTIONAL
BIDIRECTIONAL
Family
LS
LS
JESD-30 Code
R-PDIP-T24
R-PDIP-T24
JESD-609 Code
e0
e0
Length
31.915 mm
31.915 mm
Load Capacitance (CL)
50 pF
50 pF
Load/Preset Input
YES
YES
Logic IC Type
BINARY COUNTER
BINARY COUNTER
Max Frequency@Nom-Sup
12500000 Hz
12500000 Hz
Max I(ol)
0.024 A
0.024 A
Mode of Operation
SYNCHRONOUS
SYNCHRONOUS
Number of Bits
10
10
Number of Functions
1
1
Number of Terminals
24
24
Operating Temperature-Max
75 °C
75 °C
Operating Temperature-Min
Output Characteristics
3-STATE
3-STATE
Package Body Material
PLASTIC/EPOXY
PLASTIC/EPOXY
Package Code
DIP
DIP
Package Equivalence Code
DIP24,.3
DIP24,.3
Package Shape
RECTANGULAR
RECTANGULAR
Package Style
IN-LINE
IN-LINE
Power Supply Current-Max (ICC)
180 mA
180 mA
Propagation Delay (tpd)
30 ns
30 ns
Qualification Status
Not Qualified
Not Qualified
Seated Height-Max
5.08 mm
5.08 mm
Supply Voltage-Max (Vsup)
5.25 V
5.25 V
Supply Voltage-Min (Vsup)
4.75 V
4.75 V
Supply Voltage-Nom (Vsup)
5 V
5 V
Surface Mount
NO
NO
Technology
TTL
TTL
Temperature Grade
COMMERCIAL EXTENDED
COMMERCIAL EXTENDED
Terminal Finish
TIN LEAD
TIN LEAD
Terminal Form
THROUGH-HOLE
THROUGH-HOLE
Terminal Pitch
2.54 mm
2.54 mm
Terminal Position
DUAL
DUAL
Trigger Type
POSITIVE EDGE
POSITIVE EDGE
Width
7.62 mm
7.62 mm
fmax-Min
12.5 MHz
12.5 MHz
Base Number Matches
3
3
Compare DM74LS491N with alternatives
Compare DM74LS491N with alternatives