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MM74C911N

更新时间： 2024-09-09 14:53:47
品牌 Logo 应用领域
德州仪器 - TI 驱动光电二极管接口集成电路
页数 文件大小 规格书
8页 167K
描述
LED DISPLAY DRIVER, PDIP28, PLASTIC, DIP-28

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中文翻译

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MM74C911N 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：DIP, DIP28,.6Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.82数据输入模式：PARALLEL
显示模式：SEGMENT输入特性：STANDARD
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PDIP-T28
JESD-609代码：e0长度：35.725 mm
复用显示功能：YES位数/字符：4-DIGIT
功能数量：1区段数：8
端子数量：28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：PLASTIC/EPOXY
封装代码：DIP封装等效代码：DIP28,.6
封装形状：RECTANGULAR封装形式：IN-LINE
认证状态：Not Qualified座面最大高度：5.334 mm
子类别：Display Drivers最大供电电压：6 V
最小供电电压：3 V标称供电电压：5 V
表面贴装：NO技术：CMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL宽度：15.24 mm
Base Number Matches：1

MM74C911N 数据手册

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March 1988  
MM74C911  
4-Digit Expandable Segment Display Controller  
General Description  
The MM74C911 display controller is an interface element  
with memory that drives a 4-digit, 8-segment LED display.  
The MM74C911 allows individual control of any segment in  
the 4-digit display. The number of segments per digit can be  
expanded without any external components. For example,  
two MM74C911’s can be cascaded to drive a 16-segment  
alpha-numeric display.  
The digit outputs directly drive the base of the digit transis-  
tor when the control pin labeled DIGIT INPUT OUTPUT,  
DIO, is low. When DIO is high, the digit lines turn into inputs  
and the internal scanning multiplexer is disabled.  
When any digit line is forced high by an external device,  
usually another MM74C911, the data information for that  
digit is presented to the output. In this manner, 16-segment  
alpha-numeric displays, 24- or 32-segment displays, or an  
array of discrete LED’s can be controlled by the simple cas-  
cading of expandable segment display controllers. All inputs  
except digit inputs are TTL compatible and do not clamp  
The display controllers receive data information through 8  
data lines a, b . . . DP, and digit information through 2 ad-  
dress inputs K1 and K2. The input data is written into the  
register selected by the address information when CHIP  
ENABLE, CE, and WRITE ENABLE, WE, are low and is  
latched when either CE or WE return high. Data hold time is  
not required.  
input voltages above V  
.
CC  
Features  
Y
A self-contained internal oscillator sequentially presents the  
stored data to high drive (100 mA typ.) TRI-STATE output  
Direct segment drive (100 mA typ.) TRI-STATE  
É
Y
Y
Y
Y
Y
Y
4 registers addressed like RAM  
drivers which directly drive the LED display. The drivers are  
active when the control pin labeled SEGMENT OUTPUT  
ENABLE, SOE, is low and go into TRI-STATE when SOE is  
high. This feature allows for duty cycle brightness control, or  
for disabling the output drive for power conservation.  
Internal oscillator and scanning circuit  
Direct base drive to digit transistor  
Segment expandability without external components  
TTL compatible inputs  
Power saver modeÐ5 mW (typ.)  
Connection Diagram  
Truth Tables  
Input Control  
Dual-In-Line Package  
Digit  
Address  
CE  
WE  
Operation  
K2  
K1  
0
0
0
0
0
0
0
0
1
0
0
0
0
1
1
1
1
X
0
0
1
1
0
0
1
1
X
0
1
0
1
0
1
0
1
X
Write Digit 1  
Latch Digit 1  
Write Digit 2  
Latch Digit 2  
Write Digit 3  
Latch Digit 3  
Write Digit 4  
Latch Digit 4  
Disable Writing  
Output Control  
Digit Lines  
D4 D3 D2 D1  
DIO SOE  
Operation  
0
0
1
1
1
1
1
1
0
1
0
0
0
0
0
1
R
R
0
0
0
0
1
0
R
R
0
0
0
1
0
0
R
R
0
0
1
0
0
0
R
R
0
1
0
0
0
0
Refresh Display  
Disable Segment Outputs  
Digits Are Now Inputs  
Display Digit 1  
Display Digit 2  
Display Digit 3  
TL/F/5915–1  
Top View  
Order Number MM74C911  
Display Digit 4  
Power Saver Mode  
e
e
R
X
Refresh (digit lines sequentially pulsed)  
Don’t Care  
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.  
C
1995 National Semiconductor Corporation  
TL/F/5915  
RRD-B30M105/Printed in U. S. A.  
12345678

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