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參數(shù)資料
| 型號： | MC74AC299DW |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8−Input Universal Shift/Storage Register with Common Parallel I/O Pins |
| 中文描述： | AC SERIES, 8-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, PDSO20 |
| 封裝： | PLASTIC, SOIC-20 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大小： | 268K |
| 代理商： | MC74AC299DW |
Semiconductor Components Industries, LLC, 2006
June, 2006
Rev. 8
1
Publication Order Number:
MC74AC299/D
MC74AC299, MC74ACT299
8Input Universal Shift/
Storage Register with
Common Parallel I/O Pins
The MC74AC299/74ACT299 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. Additional outputs are provided for flip
flops Q
0
, Q
7
to
allow easy serial cascading. A separate active LOW Master Reset is
used to reset the register.
Common Parallel I/O for Reduced Pin Count
Additional Serial Inputs and Outputs for Expansion
Four Operating Modes: Shift Left, Shift Right, Load and Store
3
State Outputs for Bus
Oriented Applications
Outputs Source/Sink 24 mA
′
ACT299 Has TTL Compatible Inputs
These devices are available in Pb
free package(s). Specifications herein
apply to both standard and Pb
free devices. Please see our website at
www.onsemi.com for specific Pb
free orderable part numbers, or
contact your local ON Semiconductor sales office or representative.
Figure 1. Pinout: 20
Lead Packages Conductors
(Top View)
19
20
18
17
16
15
14
2
1
3
4
5
6
7
V
CC
13
8
12
9
11
10
S
1
DS
7
Q
7
I/O
7
I/O
5
I/O
3
I/O
1
CP
DS
0
S
0
OE
1
OE
2
I/O
6
I/O
4
I/O
2
I/O
0
Q
0
MR
GND
PIN ASSIGNMENT
PIN
FUNCTION
CP
Clock Pulse Input
DS
0
Serial Data Input for Right Shift
DS
7
Serial Data Input for Left Shift
S
0
, S
1
Mode Select Inputs
MR
Asynchronous Master Reset
OE
1
, OE
2
3
State Output Enable Inputs
I/O
0
I/O
7
Parallel Data Inputs or 3
State Parallel Outputs
Q
0
, Q
7
Serial Outputs
1
20
PDIP
20
N SUFFIX
CASE 738
1
20
SO
20
DW SUFFIX
CASE 751
Device
Package
Shipping
ORDERING INFORMATION
MC74AC299N
PDIP
20
18 Units/Rail
MC74ACT299N
PDIP
20
18 Units/Rail
MC74AC299DW
SOIC
20
38 Units/Rail
MC74AC299DWR2
SOIC
20
1000 Tape & Reel
MC74ACT299DW
SOIC
20
38 Units/Rail
MC74ACT299DWR2
SOIC
20
1000 Tape & Reel
See general marking information in the device marking
section on page 9 of this data sheet.
DEVICE MARKING INFORMATION
http://onsemi.com
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| MC74ACT299DW | 8−Input Universal Shift/Storage Register with Common Parallel I/O Pins |
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| MC74AC299DWR2 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:8-Input Universal Shift/ Storage Register with Common Parallel I/O Pins |
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| MC74AC323 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:8-INPUT UNIVERSAL SHIFT/ STORAGE REGISTER WITH SYNCHRONOUS RESET AND COMMON I/O PINS |
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