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参数资料
| 型号： | LM12458CIVF/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP44 |
| 封装： | PLASTIC, QFP-44 |
| 文件页数： | 35/36页 |
| 文件大小： | 1195K |
| 代理商： | LM12458CIVF/NOPB |
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Digital Characteristics (Notes 6, 7)
The following specifications apply to the LM12454, LM12458, and LM12H458 for V
A+=VD+ = 5V, unless otherwise specified.
Boldface limits apply for T
A =TJ =TMIN to TMAX; all other limits TA =TJ = 25C.
Symbol
Parameter
Conditions
Typical
Limits
Units
V
IN(1)
Logical “1” Input Voltage
V
A+=VD+ = 5.5V
2.0
V (min)
V
IN(0)
Logical “0” Input Voltage
V
A+=VD+ = 4.5V
0.8
V (max)
I
IN(1)
Logical “1” Input Current
V
IN = 5V
0.005
1.0
A (max)
I
IN(0)
Logical “0” Input Current
V
IN = 0V
0.005
1.0
A (max)
C
IN
D0–D15 Input Capacitance
6
pF
V
OUT(1)
Logical “1” Output Voltage
V
A+=VD+ = 4.5V
I
OUT = 360 A
2.4
V (min)
I
OUT = 10 A
4.25
V (min)
V
OUT(0)
Logical “0” Output Voltage
V
A+=VD+ = 4.5V
I
OUT = 1.6 mA
0.4
V (max)
I
OUT
TRI-STATE Output Leakage Current
V
OUT = 0V
0.01
3.0
A (max)
V
OUT = 5V
0.01
3.0
A (max)
Digital Timing Characteristics (Notes 6, 7, 8)
The following specifications apply to the LM12454, LM12458, and LM12H458 for V
A+=VD+ = 5V, tr =tf = 3 ns, and CL = 100
pF on data I/O, INT and DMARQ lines unless otherwise specified. Boldface limits apply for T
A =TJ =TMIN to TMAX; all other
limits T
A =TJ = 25C.
Symbol (See Figures
Parameter
Conditions
Typical
Limits
Units
1, 3
CS or Address Valid to ALE Low Set-Up
Time
40
ns (min)
2, 4
CS or Address Valid to ALE Low Hold
Time
20
ns (min)
5
ALE Pulse Width
45
ns (min)
6
RD High to Next ALE High
35
ns (min)
7
ALE Low to RD Low
20
ns (min)
8
RD Pulse Width
100
ns (min)
9
RD High to Next RD or WR Low
100
ns (min)
10
ALE Low to WR Low
20
ns (min)
11
WR Pulse Width
60
ns (min)
12
WR High to Next ALE High
75
ns (min)
13
WR High to Next RD or WR Low
140
ns (min)
14
Data Valid to WR High Set-Up Time
40
ns (min)
15
Data Valid to WR High Hold Time
30
ns (min)
16
RD Low to Data Bus Out of TRI-STATE
40
10
ns (min)
70
ns (max)
17
RD High to TRI-STATE
R
L =1k
30
10
ns (min)
110
ns (max)
18
RD Low to Data Valid (Access Time)
30
10
ns (min)
80
ns (max)
20
Address Valid or CS Low to RD Low
20
ns (min)
21
Address Valid or CS Low to WR Low
20
ns (min)
19
Address Invalid from RD or WR High
10
ns (min)
22
INT High from RD Low
30
10
ns (min)
60
ns (max)
23
DMARQ Low from RD Low
30
10
ns (min)
60
ns (max)
LM12454/LM12458/LM12H458
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM12458CIVX | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| LM12458CIVX/NOPB | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| LM12458CMEL/883 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Single-Ended Data Acquisition System |
| LM12458MEL/883 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Single-Ended Data Acquisition System |
| LM12458MW/883 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Single-Ended Data Acquisition System |
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