MC74F299 Datasheet, PDF (1/5 Pages) Motorola, Inc – 8-INPUT UNIVERSAL SHIFT/STORAGE REGISTER WITH COMMON PARALLEL I/O PINS

8-INPUT UNIVERSAL
SHIFT/STORAGE REGISTER
WITH COMMON PARALLEL I/O PINS
The MC74F299 is an 8-Bit Universal Shift/Storage Register with 3-state
outputs. Four modes of operation are possible: hold (store), shift left, shift right
and load data.
The parallel load inputs and flip-flop outputs are multiplexed to reduce the
total number of package pins. Separate outputs are provided for flip-flops Q0
and Q7 to allow easy cascading. A separate active LOW Master Reset is used
to reset the register.
• Common I/O for Reduced Pin Count
• Four Operation Modes: Shift left, Shift Right, Load and Store
• Separate Shift Right Serial Input and Shift Left Serial Input for Easy
Cascading
• 3-State Outputs for Bus Oriented Applications
• Input Clamp Diodes Limit High-Speed Termination Effects
MC74F299
8-INPUT UNIVERSAL
SHIFT/STORAGE REGISTER
WITH COMMON
PARALLEL I/O PINS
FAST™ SCHOTTKY TTL
20
1
J SUFFIX
CERAMIC
CASE 732-03
CONNECTION DIAGRAM
VCC
S1
DS7 Q7
I/O7 I/O5 I/O3 I/O1 CP
DS0
20
19
18
17
16
15
14
13
12
11
20
1
N SUFFIX
PLASTIC
CASE 738-03
1
2
3
4
5
6
7
8
S0 OE1 OE2 I/O6 I/O4 I/O2 I/O0 Q0
9
10
MR GND
20
1
DW SUFFIX
SOIC
CASE 751D-03
ORDERING INFORMATION
MC74FXXXJ Ceramic
MC74FXXXN Plastic
MC74FXXXDW SOIC
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
TA
Supply Voltage
Operating Ambient
Temperature Range
IOH
Output Current — High
IOL
Output Current — Low
Min
Typ
Max
Unit
74
4.5
5.0
5.5
V
74
0
25
70
°C
74
–1.0/– 3.0
mA
74
20/24
mA
FAST AND LS TTL DATA
4-242