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74ACQ245LC PDF预览

74ACQ245LC

更新时间： 2024-11-06 14:26:31
品牌 Logo 应用领域
德州仪器 - TI 输出元件逻辑集成电路
页数 文件大小 规格书
10页 207K
描述
AC SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, CQCC20, CERAMIC, LCC-20

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74ACQ245LC 技术参数

生命周期：Obsolete零件包装代码：QLCC
包装说明：QCCN,针数：20
Reach Compliance Code：unknownHTS代码：8542.39.00.01
风险等级：5.69Is Samacsys：N
其他特性：WITH DIRECTION CONTROL系列：AC
JESD-30 代码：S-CQCC-N20长度：8.89 mm
逻辑集成电路类型：BUS TRANSCEIVER位数：8
功能数量：1端口数量：2
端子数量：20最高工作温度：85 °C
最低工作温度：-40 °C输出特性：3-STATE
输出极性：TRUE封装主体材料：CERAMIC, METAL-SEALED COFIRED
封装代码：QCCN封装形状：SQUARE
封装形式：CHIP CARRIER传播延迟（tpd）：10.5 ns
认证状态：Not Qualified座面最大高度：1.905 mm
最大供电电压 (Vsup)：6 V最小供电电压 (Vsup)：2 V
标称供电电压 (Vsup)：3.3 V表面贴装：YES
技术：CMOS温度等级：INDUSTRIAL
端子形式：NO LEAD端子节距：1.27 mm
端子位置：QUAD宽度：8.89 mm
Base Number Matches：1

74ACQ245LC 数据手册

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March 1993  
54ACQ/74ACQ245 54ACTQ/74ACTQ245  
#
Quiet Series Octal Bidirectional Transceiver  
with TRI-STATE Inputs/Outputs  
É
General Description  
Features  
Y
CC  
I
and I  
reduced by 50%  
OZ  
The ’ACQ/’ACTQ245 contains eight non-inverting bidirec-  
tional buffers with TRI-STATE outputs and is intended for  
bus-oriented applications. Current sinking capability is  
24 mA at both the A and B ports. The Transmit/Receive  
(T/R) input determines the direction of data flow through  
the bidirectional transceiver. Transmit (active-HIGH) en-  
ables data from A ports to B ports; Receive (active-LOW)  
enables data from B ports to A ports. The Output Enable  
input, when HIGH, disables both A and B ports by placing  
them in a HIGH Z condition.  
Y
Guaranteed simultaneous switching noise level and  
dynamic threshold performance  
Y
Y
Y
Guaranteed pin-to-pin skew AC performance  
Improved latch-up immunity  
TRI-STATE outputs drive bus lines or buffer memory  
address registers  
Y
Y
Y
Y
Outputs source/sink 24 mA  
Faster prop delays than the standard ’ACT245  
4 kV minimum ESD immunity (‘ACQ)  
Standard Military Drawing (SMD)  
Ð ’ACTQ245: 5962-8766303  
The ’ACQ/’ACTQ utilizes NSC Quiet Series technology to  
guarantee quiet output switching and improve dynamic  
threshold performance. FACT Quiet SeriesTM features  
GTOTM output control and undershoot corrector in addition  
to a split ground bus for superior performance.  
Ð ’ACQ245: 5962-92177  
Logic Symbols  
Connection Diagrams  
Pin Assignment  
for DIP, Flatpak, QSOP and SOIC  
IEEE/IEC  
TL/F/10236–1  
Pin  
Description  
Names  
OE  
Output Enable Input  
Transmit/Receive Input  
Side A TRI-STATE  
Inputs or TRI-STATE  
Outputs  
T/R  
A –A  
0
7
7
TL/F/10236–3  
TL/F/10236–2  
B –B  
0
Side B TRI-STATE  
Inputs or TRI-STATE  
Outputs  
Pin Assignment  
for LCC  
Truth Table  
Inputs  
Outputs  
OE  
T/R  
L
L
L
H
X
Bus B Data to Bus A  
Bus A Data to Bus B  
HIGH-Z State  
H
e
e
e
H
L
HIGH Voltage Level  
LOW Voltage Level  
Immaterial  
TL/F/10236–4  
X
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.  
FACTTM, FACT Quiet SeriesTM, and GTOTM are trademarks of National Semiconductor Corporation.  
C
1995 National Semiconductor Corporation  
TL/F/10236  
RRD-B30M75/Printed in U. S. A.  
1234567...10

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