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SN74BCT29821DW

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页数 文件大小 规格书
5页 73K
描述
10-BIT BUS-INTERFACE FLIP-FLOP WITH 3-STATE OUTPUTS

SN74BCT29821DW 数据手册

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SN74BCT29821  
10-BIT BUS-INTERFACE FLIP-FLOP  
WITH 3-STATE OUTPUTS  
SCBS021D – FEBRUARY 1989 – REVISED NOVEMBER 1993  
DW OR NT PACKAGE  
(TOP VIEW)  
State-of-the-Art BiCMOS Design  
Significantly Reduces I  
CCZ  
ESD Protection Exceeds 2000 V Per  
MIL-STD-883C, Method 3015; Exceeds  
200 V Using Machine Model (C = 200 pF,  
R = 0)  
OE  
1D  
2D  
3D  
4D  
5D  
6D  
7D  
8D  
V
CC  
1
2
3
4
5
6
7
8
9
24  
23 1Q  
22 2Q  
21 3Q  
20 4Q  
19 5Q  
18 6Q  
17 7Q  
16 8Q  
15 9Q  
14 10Q  
13 CLK  
3-State Buffer-Type Outputs Drive Bus  
Lines Directly  
Package Options Include Plastic  
Small-Outline (DW) Packages and Standard  
Plastic 300-mil DIPs (NT)  
9D 10  
10D 11  
GND 12  
description  
This 10-bit bus-interface flip-flop features 3-state  
outputs designed specifically for driving highly  
capacitive or relatively low-impedance loads. It is  
particularly suitable for implementing wider buffer  
registers, I/O ports, bidirectional bus drivers with  
parity, and working registers.  
The ten flip-flops are edge-triggered D-type flip-flops. On the positive transition of the clock, the Q outputs will  
be true to the data (D) inputs.  
A buffered output-enable (OE) input can be used to place the ten outputs in either a normal logic state (high or  
low) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines  
significantly. Thehigh-impedancestateandincreaseddriveprovidethecapabilitytodrivebuslineswithoutneed  
for interface or pullup components.  
The output enable (OE) does not affect the internal operation of the flip-flops. Old data can be retained or new  
data can be entered while the outputs are in the high-impedance state.  
The SN74BCT29821 is characterized for operation from 0°C to 70°C.  
FUNCTION TABLE  
(each flip-flop)  
INPUTS  
OUTPUT  
Q
OE  
L
CLK  
D
H
L
H
L
L
L
H or L  
X
X
X
Q
0
H
Z
Copyright 1993, 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.  
2–1  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

SN74BCT29821DW 替代型号

型号 品牌 替代类型 描述 数据表
SN74BCT29821DWG4 TI

完全替代

BCT/FBT SERIES, 10-BIT DRIVER, TRUE OUTPUT, PDSO24, PLASTIC, SO-24
SN74BCT29821NT TI

完全替代

10-BIT BUS-INTERFACE FLIP-FLOP WITH 3-STATE OUTPUTS

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