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SN74BCT29854DWE4 PDF预览

SN74BCT29854DWE4

更新时间: 2024-11-14 15:52:11
品牌 Logo 应用领域
德州仪器 - TI 信息通信管理光电二极管输出元件逻辑集成电路
页数 文件大小 规格书
12页 411K
描述
BCT/FBT SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO24, GREEN, PLASTIC, SOIC-24

SN74BCT29854DWE4 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP, SOP24,.4针数:24
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.54其他特性:PARITY GENERATION A TO B; ERROR DETECTION B TO A; ODD PARITY
控制类型:INDEPENDENT CONTROL计数方向:BIDIRECTIONAL
系列:BCT/FBTJESD-30 代码:R-PDSO-G24
JESD-609代码:e4长度:15.4 mm
负载电容(CL):50 pF逻辑集成电路类型:BUS TRANSCEIVER
最大I(ol):0.048 A湿度敏感等级:1
位数:8功能数量:1
端口数量:2端子数量:24
最高工作温度:70 °C最低工作温度:
输出特性:OPEN-COLLECTOR输出极性:INVERTED
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP24,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE包装方法:TUBE
峰值回流温度(摄氏度):260电源:5 V
最大电源电流(ICC):80 mAProp。Delay @ Nom-Sup:8 ns
传播延迟(tpd):8 ns认证状态:Not Qualified
座面最大高度:2.65 mm子类别:Bus Driver/Transceivers
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:YES
技术:BICMOS温度等级:COMMERCIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED翻译:N/A
宽度:7.5 mmBase Number Matches:1

SN74BCT29854DWE4 数据手册

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ꢀꢁꢂ ꢃ ꢄ ꢅꢆ ꢇꢈ ꢉꢊꢃ  
ꢉ ꢋꢄꢌ ꢆꢍ ꢆꢎ ꢍꢈ ꢋꢄꢌ ꢆ ꢍꢏꢐꢑꢌ ꢆ ꢒꢍꢄ ꢓꢀꢍ ꢆꢑꢐ ꢁꢀ ꢅ ꢔꢌ ꢕ ꢔꢑ  
SCBS257 − SEPTEMBER 1987 − REVISED NOVEMBER 1993  
DW OR NT PACKAGE  
(TOP VIEW)  
BiCMOS Process With TTL Inputs and  
Outputs  
State-of-the-Art BiCMOS Design  
OEA  
A1  
V
CC  
B1  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
Significantly Reduces Standby Current  
2
Flow-Through Pinout (All Inputs on  
A2  
B2  
3
Opposite Side From Outputs)  
A3  
B3  
4
A4  
B4  
5
Functionally Equivalent to AMD Am29854  
A5  
B5  
6
High-Speed Bus Transceiver With Parity  
A6  
B6  
7
Generator/Checker  
A7  
B7  
8
Parity-Error Flag With Open-Collector  
A8  
B8  
9
Output  
ERR  
CLR  
PARITY  
OEB  
10  
11  
Latch for Storage of the Parity-Error Flag  
Package Options Include Plastic  
Small-Outline (DW) Packages and Standard  
Plastic 300-mil DIPs (NT)  
GND 12  
13 LE  
description  
The SN74BCT29854 is an 8-bit to 9-bit parity transceiver designed for asynchronous communication between  
data buses. When data is transmitted from the A to B bus, a parity bit is generated. When data is transmitted  
from the B to A bus with its corresponding parity bit, the parity-error (ERR) output will indicate whether or not  
an error in the B data has occurred. The output-enable (OEA, OEB) inputs can be used to disable the device  
so that the buses are effectively isolated.  
A 9-bit parity generator/checker generates a parity-odd (PARITY) output and monitors the parity of the I/O ports  
with an open-collector parity-error (ERR) flag. ERR can be either passed, sampled, stored, or cleared from the  
latch using the latch-enable (LE) and clear (CLR) control inputs. When both OEA and OEB are low, data is  
transferred from the A bus to the B bus and inverted parity is generated. Inverted parity is a forced error condition  
which gives the designer more system diagnostic capability. The SN74BCT29854 provides inverting logic.  
The SN74BCT29854 is characterized for operation from 0°C to 70°C.  
FUNCTION TABLE  
INPUTS  
LE  
OUTPUT AND I/O  
Bi  
of L’s  
FUNCTION  
Ai  
of H’s  
OEB  
L
OEA  
H
CLR  
X
A
NA  
B
B
A
PARITY  
ERR  
Odd  
Even  
H
L
X
L
NA  
NA  
A data to B bus and generate parity  
B data to A bus and check parity  
Odd  
Even  
H
L
H
L
X
NA  
NA  
NA  
H
X
L
H
L
H
H
NA  
X
X
X
X
X
NA  
NA  
NA  
NA  
N−1  
H
Store error flag  
X
Clear error-flag register  
H
L
X
X
H
H
L
X
X
NC  
H
L
§
Isolation  
H
L
H
L
X
Z
Z
A
Z
L Odd  
H Even  
L
H
Odd  
Even  
L
H
A data to B bus and generate inverted  
parity  
X
X
NA  
NA  
NA  
NA = not applicable, NC = no change, X = don’t care  
§
Summation of low-level inputs includes PARITY along with Bi inputs.  
Output states shown assume the ERR output was previously high.  
In this mode, the ERR output, when enabled, shows noninverted parity of the A bus.  
ꢆꢣ  
Copyright 1993, Texas Instruments Incorporated  
ꢟ ꢣ ꢠ ꢟꢘ ꢙꢭ ꢛꢚ ꢞ ꢦꢦ ꢤꢞ ꢜ ꢞ ꢝ ꢣ ꢟ ꢣ ꢜ ꢠ ꢨ  
2−1  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443  

SN74BCT29854DWE4 替代型号

型号 品牌 替代类型 描述 数据表
SN74BCT29854DWR TI

完全替代

BCT/FBT SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO24, GREEN, PLASTIC, SOIC-24
SN74BCT29854NT TI

完全替代

8-BIT TO 9-BIT PARITY BUS TRANSCEIVER
SN74BCT29854DW TI

完全替代

8-BIT TO 9-BIT PARITY BUS TRANSCEIVER

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SN74BCT29854NTE4 TI

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SN74BCT29861ADW TI

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