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參數(shù)資料
| 型號： | SN54ABT843FK |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 9-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| 中文描述： | 9位總線接口D型鎖存器具有三態(tài)輸出 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大?。?/td> | 405K |
| 代理商： | SN54ABT843FK |
SN54ABT843, SN74ABT843
9-BIT BUS-INTERFACE D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCBS197D – FEBRUARY 1991 – REVISED MAY 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
State-of-the-Art EPIC-
ΙΙ
B
BiCMOS Design
Significantly Reduces Power Dissipation
Latch-Up Performance Exceeds 500 mA Per
JEDEC Standard JESD-17
Typical V
OLP
(Output Ground Bounce) < 1 V
at V
CC
= 5 V, T
A
= 25
°
C
High-Drive Outputs (–32-mA I
OH
, 64-mA I
OL
)
Package Options Include Plastic
Small-Outline (DW) and Shrink
Small-Outline (DB) Packages, Ceramic Chip
Carriers (FK), Ceramic Flat (W) Package,
and Plastic (NT) and Ceramic (JT) DIPs
description
The ’ABT843 9-bit latches are designed
specifically for driving highly capacitive or
relatively low-impedance loads. They are
particularly suitable for implementing buffer
registers, I/O ports, bidirectional bus drivers, and
working registers.
The nine transparent D-type latches provide true
data at the outputs.
A buffered output-enable (OE) input can be used
to place the nine outputs in either a normal logic
state
(high
or
low
high-impedance state. The outputs are also in the
high-impedance state during power-up and
power-down conditions. The outputs remain in the
high-impedance state while the device is powered
down. In the high-impedance state, the outputs
neither load nor drive the bus lines significantly.
The high-impedance state and increased drive
provide the capability to drive bus lines without
need for interface or pullup components.
logic
levels)
or
a
OE does not affect the internal operations of the latch. Previously stored data can be retained or new data can
be entered while the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54ABT843 is characterized for operation over the full military temperature range of –55
°
C to 125
°
C. The
SN74ABT843 is characterized for operation from –40
°
C to 85
°
C.
Copyright
1997, Texas Instruments Incorporated
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.
EPIC-
ΙΙ
B is a trademark of Texas Instruments Incorporated.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SN54ABT843 . . . JT OR W PACKAGE
SN74ABT843 . . . DB, DW, OR NT PACKAGE
(TOP VIEW)
SN54ABT843 . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
OE
1D
2D
3D
4D
5D
6D
7D
8D
9D
CLR
GND
V
CC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
9Q
PRE
LE
3 2 1 28 27
12 13
5
6
7
8
9
10
11
25
24
23
22
21
20
19
3Q
4Q
5Q
NC
6Q
7Q
8Q
3D
4D
5D
NC
6D
7D
8D
4
26
14 15 16 17 18
9
C
G
N
L
P
9
2
1
O
N
1
2
V
NC – No internal connection
C
相關PDF資料 |
PDF描述 |
|---|---|
| SN54ABT843JT | 9-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| SN54ABT843W | 9-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| SN74ABT843DB | 9-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| SN74ABT843NSRE4 | 9-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| SN74ABT853DB | 8-BIT TO 9-BIT PARITY BUS TRANSCEIVERS |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SN54ABT843JT | 制造商:TI 制造商全稱:Texas Instruments 功能描述:9-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| SN54ABT843W | 制造商:TI 制造商全稱:Texas Instruments 功能描述:9-BIT BUS-INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS |
| SN54ABT853 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:8-BIT TO 9-BIT PARITY BUS TRANSCEIVERS |
| SN54ABT853FK | 制造商:TI 制造商全稱:Texas Instruments 功能描述:8-BIT TO 9-BIT PARITY BUS TRANSCEIVERS |
| SN54ABT853JT | 制造商:TI 制造商全稱:Texas Instruments 功能描述:8-BIT TO 9-BIT PARITY BUS TRANSCEIVERS |
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