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SN54LS299 Datasheet(PDF) 1 Page - Motorola, Inc

Part No. SN54LS299
Description  8-BIT SHIFT/STORAGE REGISTER WITH 3-STATE OUTPUTS
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Maker  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
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SN54LS299 Datasheet(HTML) 1 Page - Motorola, Inc

   
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FAST AND LS TTL DATA
8-BIT SHIFT/STORAGE REGISTER
WITH 3-STATE OUTPUTS
The SN54 / 74LS299 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
ESD > 3500 Volts
CONNECTION DIAGRAM DIP (TOP VIEW)
18
17
16
15
14
13
1
2
3
4
5
6
7
20
19
8
VCC
S0
S1 Ds7 Q7 I/O7
I/O3
I/O5
I/O1
OE1 OE2 I/O6 I/O4 I/O2 I/O0 Q0
9
10
MR GND
12
11
CP DS0
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
PIN NAMES
LOADING (Note a)
HIGH
LOW
CP
Clock Pulse (active positive-going edge) Input
0.5 U.L.
0.25 U.L.
DS0
Serial Data Input for Right Shift
0.5 U.L.
0.25 U.L.
DS7
Serial Data Input for Left Shift
0.5 U.L.
0.25 U.L.
I/On
Parallel Data Input or
Parallel Output (3-State) (Note c)
0.5 U.L.
65 (25) U.L.
0.25 U.L.
15 (7.5) U.L.
OE1, OE2
3-State Output Enable (active LOW) Inputs
0.5 U.L.
0.25 U.L.
Q0, Q7
Serial Outputs (Note b)
10 U.L.
5 (2.5) U.L.
MR
Asynchronous Master Reset (active LOW) Input
0.5 U.L.
0.25 U.L.
S0, S1
Mode Select Inputs
1 U.L.
0.5 U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40
µA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L for Military (54) and 5 U.L. for Commercial (74) Temperature Ranges.
c) The Output LOW drive factor is 7.5 U.L for Military (54) and 15 U.L. for Commercial (74). The Output HIGH drive factor is 25 U.L. for Military (54) and 65 U.L. for
Commercial (74) Temperature Ranges.
SN54/74LS299
8-BIT SHIFT/STORAGE REGISTER
WITH 3-STATE OUTPUTS
LOW POWER SCHOTTKY
ORDERING INFORMATION
SN54LSXXXJ
Ceramic
SN74LSXXXN
Plastic
SN74LSXXXDW SOIC
20
1
J SUFFIX
CERAMIC
CASE 732-03
20
1
N SUFFIX
PLASTIC
CASE 738-03
20
1
DW SUFFIX
SOIC
CASE 751D-03


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