MC74F269N Ver la hoja de datos (PDF) - Motorola => Freescale
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MC74F269N Datasheet PDF : 5 Pages
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8-BIT BIDIRECTIONAL
BINARY COUNTER
The MC74F269 is a fully synchronous 8-stage up/down counter featuring
a preset capability for programmable operation, carry look-ahead for easy
cascading and a U/D input to control the direction of counting. All state
changes, whether in counting or parallel loading, are initiated by the rising
edge of the clock.
• Synchronous Counting and Loading
• Built-In Lookahead Carry Capability
• Count Frequency 115 MHz Typical
• Supply Current 95 mA Typical
PIN ASSIGNMENT
PE P0 P1 P2 P3 VCC P4 P5 P6 P7 TC CET
24 23 22 21 20 19 18 17 16 15 14 13
MC74F269
8-BIT BIDIRECTIONAL
BINARY COUNTER
FAST™ SCHOTTKY TTL
24
1
J SUFFIX
CERAMIC
CASE 758-01
1 2 3 4 5 6 7 8 9 10 11 12
U/D Q0 Q1 Q2 Q3 Q4 GND Q5 Q6 Q7 CP CEP
24
1
N SUFFIX
PLASTIC
CASE 724-03
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
TA
IOH
IOL
Supply Voltage
Operating Ambient Temperature Range
Output Current High
Output Current Low
24
1
DW SUFFIX
SOIC
CASE 751E-03
ORDERING INFORMATION
MC74FXXXJ Ceramic
MC74FXXXN Plastic
MC74FXXXDW SOIC
Min
Typ
Max
Unit
74
4.5
5.0
5.5
V
74
0
25
70
°C
74
–1.0
mA
74
20
mA
FAST AND LS TTL DATA
4-138
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