参数资料
| 型号： | MC74AC259MELG |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/11页 |
| 文件大小： | 0K |
| 描述： | IC LATCH ADDRESS 8BIT 16-SOEIAJ |
| 产品变化通告： | Product Obsolescence 08/Apr/2011 |
| 标准包装： | 2,000 |
| 系列： | 74AC |
| 逻辑类型： | D 型，可寻址 |
| 电路： | 1:8 |
| 输出类型： | 标准 |
| 电源电压： | 2 V ~ 6 V |
| 独立电路： | 1 |
| 延迟时间 - 传输： | 6.5ns |
| 输出电流高，低： | 24mA，24mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.209"，5.30mm 宽） |
| 供应商设备封装： | 16-SOEIAJ |
| 包装： | 带卷 (TR) |
MC74AC259, MC74ACT259
http://onsemi.com
2
MODE SELECTFUNCTION TABLE
Operating
Mode
Inputs
Outputs
MR
E
D
A0
A1
A2
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Master Reset
L
H
X
L
Demultiplex
(Active HIGH
Decoder when
D = H)
L
d
L
Q = d
L
Ld
H
L
Q = d
L
Ld
L
H
L
Q = d
L
LL
L
Ld
H
L
LLL
LL
L
Q = d
Store
(Do Nothing)
H
X
q0
q1
q2
q3
q4
q5
q6
q7
Addressable
Latch
H
L
d
L
Q = d
q1
q2
q3
q4
q5
q6
q7
H
Ld
H
L
q0
Q = d
q2
q3
q4
q5
q6
q7
H
Ld
L
H
L
q0
q1
Q = d
q3
q4
q5
q6
q7
H
L
d
H
q0
q1
q2
q3
q4
q5
q6
Q = d
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
d = HIGH or LOW Data one setup time prior to the LOWtoHIGH Enable transition
q = Lower case letters indicate the state of the referenced output established during the last cycle in which it was addressed
or cleared.
FUNCTIONAL DESCRIPTION
The MC74AC259/74ACT259 has four modes of
operation as shown in the Mode Selection Table. In the
addressable latch mode, data on the Data line (D) is written
into the addressed latch. The addressed latch will follow the
data input with all nonaddressed latches remaining in their
previous states in the memory mode. All latches remain in
their previous state and are unaffected by the Data or
Address inputs.
In the oneofeight decoding or demultiplexing mode, the
addressed output will follow the state of the D input with all
other outputs in the LOW state. In the clear mode all outputs
are LOW and unaffected by the address and data inputs.
When operating the MC74AC/ACT259 as an addressable
latch, changing more than one bit of the address could
impose a transient wrong address. Therefore, this should
only be done while in the memory mode. The Mode Select
Function
Table
summarizes
the
operations
of
the
MC74AC/ACT259.
相关PDF资料 |
PDF描述 |
|---|---|
| MC74AC259D | IC LATCH ADDRESS 8BIT 16-SOIC |
| OSTVM053552 | TERM BLOCK PLUG 3.81MM 5POS |
| OSTOQ147551 | CONN HEADER 14POS 5.0MM R/A PCB |
| OSTOQ147550 | CONN HEADER 14POS 5.0MM VERT PCB |
| OSTHW055052 | TERMINAL BLOCK PLUG 5.08MM 5POS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC74AC259MG | 功能描述:闭锁 2-6V 8-Bit Addressable RoHS:否 制造商:Micrel 电路数量:1 逻辑类型:CMOS 逻辑系列:TTL 极性:Non-Inverting 输出线路数量:9 高电平输出电流: 低电平输出电流: 传播延迟时间: 电源电压-最大:12 V 电源电压-最小:5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-16 封装:Reel |
| MC74AC259N | 功能描述:闭锁 2-6V 8-Bit RoHS:否 制造商:Micrel 电路数量:1 逻辑类型:CMOS 逻辑系列:TTL 极性:Non-Inverting 输出线路数量:9 高电平输出电流: 低电平输出电流: 传播延迟时间: 电源电压-最大:12 V 电源电压-最小:5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-16 封装:Reel |
| MC74AC259NG | 功能描述:闭锁 2-6V 8-Bit Addressable RoHS:否 制造商:Micrel 电路数量:1 逻辑类型:CMOS 逻辑系列:TTL 极性:Non-Inverting 输出线路数量:9 高电平输出电流: 低电平输出电流: 传播延迟时间: 电源电压-最大:12 V 电源电压-最小:5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-16 封装:Reel |
| MC74AC273 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Octal D Flip−Flop |
| MC74AC273_05 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Octal D Flip−Flop |
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