參數(shù)資料
型號： SN54ALS29843
廠商： Texas Instruments, Inc.
英文描述： 9-Bit Bus-Interface Flip-Flops With 3-State Outputs(9位總線接口D鎖存器(三態(tài)輸出))
中文描述： 9位總線接口觸發(fā)器以3正反器態(tài)輸出（9位總線接口?鎖存器（三態(tài)輸出））
文件頁數(shù)： 1/9頁
文件大小： 79K
代理商： SN54ALS29843
SN54ALS29843, SN74ALS29843, SN74ALS29844
9-BIT BUS INTERFACE D-TYPE LATCHES WITH 3-STATE OUTPUTS
SDAS151A – D2910 — JUNE 1988 — REVISED JANUARY 1990
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Copyright
1990, Texas Instruments Incorporated
1
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.
3-State Buffer-Type Outputs Drive Bus
Lines Directly
Bus-Structured Pinout
Provide Extra Bus Driving Latches
Necessary For Wider Address/Data Paths
or Buses With Parity
Buffered Control Inputs to Reduce DC
Loading
Power-Up High-Impedance
Package Options Include Plastic “Small
Outline” Packages and Standard Plastic
and Ceramic 300-Mil DIPs
description
These 9-bit latches feature three-state outputs
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 latches are transparent D-type. The
′
ALS29843 has noninverting data (D) inputs. The
′
ALS29844 has inverting D inputs.
A buffered output control (OC) input can be used
to place the nine outputs in either a normal logic
state (high or low levels) or a high-impedance
state. The outputs are also in the high-impedance
state
during
power-up
conditions.
The
outputs
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 the
bus lines in a bus-organized system without need
for interface or pullup components.
and
remain
power-down
in
the
The output control (OC) does not affect the internal operation of the latches. Old data can be retained or new
data can be entered while the outputs are off.
The SN54ALS29843 is characterized for operation over the full military range of – 55
°
C to 125
°
C. The
SN74ALS29843 and SN74ALS29844 are characterized for operation from 0
°
C to 70
°
C.
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OC
1D
2D
3D
4D
5D
6D
7D
8D
9D
CLR
GND
V
CC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
9Q
PRE
C
SN54ALS29843 . . . JT Package
SN74ALS29843 . . . DW or NT Package
(Top View)
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OC
1D
2D
3D
4D
5D
6D
7D
8D
9D
CLR
GND
V
CC
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
9Q
PRE
C
SN74ALS29844 . . . DW or NT Package
(Top View)
相關(guān)PDF資料
PDF描述
SN54ALS299FK 8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS WITH 3-STATE OUTPUTS
SN54ALS323FK 8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS WITH SYNCHRONOUS CLEAR AND 3-STATE OUTPUTS
SN74ALS323DW 8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS WITH SYNCHRONOUS CLEAR AND 3-STATE OUTPUTS
SN54ALS323J 8-BIT UNIVERSAL SHIFT/STORAGE REGISTERS WITH SYNCHRONOUS CLEAR AND 3-STATE OUTPUTS
SN54ALS74AFK DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET
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