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參數(shù)資料
| 型號： | SN54F299FK |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS WITH 3-STATE OUTPUTS |
| 中文描述： | 8位通用移位/存儲寄存器具有三態(tài)輸出 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 108K |
| 代理商： | SN54F299FK |
SN54F299, SN74F299
8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS
WITH 3-STATE OUTPUTS
SDFS071A – MARCH 1987 – REVISED OCTOBER 1993
Copyright
1993, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Four Modes of Operation:
Hold (Store)
Shift Right
Shift Left
Load Data
Operates With Outputs Enabled or at High
Impedance
3-State Outputs Drive Bus Lines Directly
Can Be Cascaded for N-Bit Word Lengths
Direct Overriding Clear
Applications:
Stacked or Push-Down Registers
Buffer Storage
Accumulator Registers
Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
description
These 8-bit universal shift/storage registers
feature multiplexed I/O ports to achieve full 8-bit
data handling in a single 20-pin package. Two
function-select (S0, S1) inputs and two
output-enable (OE1, OE2) inputs can be used to
choose the modes of operation listed in the
function table.
Synchronous parallel loading is accomplished by
taking both S0 and S1 high. This places the 3-state
outputs in a high-impedance state and permits
data that is applied on the I/O ports to be clocked into the register. Reading out of the register can be
accomplished while the outputs are enabled in any mode. Clearing occurs when the clear (CLR) input is low.
Taking either OE1 or OE2 high disables the outputs but has no effect on clearing, shifting, or storage of data.
The SN54F299 is characterized for operation over the full military temperature range of –55
°
C to 125
°
C. The
SN74F299 is characterized for operation from 0
°
C to 70
°
C.
SN54F299 . . . J PACKAGE
SN74F299 . . . DW OR N PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
SL
Q
H
′
H/Q
H
F/Q
F
D/Q
D
G/Q
G
E/Q
E
C/Q
C
A/Q
A
Q
A
′
SN54F299 . . . FK PACKAGE
(TOP VIEW)
O
O
S
C
B
B
S
C
G
S
V
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
S0
OE1
OE2
G/Q
G
E/Q
E
C/Q
C
A/Q
A
Q
A
′
CLR
GND
V
CC
S1
SL
Q
H
′
H/Q
H
F/Q
F
D/Q
D
B/Q
B
CLK
SR
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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