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参数资料
| 型号： | SN74LS251M |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | LS SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, PDSO16 |
| 封装： | EIAJ, SOP-16 |
| 文件页数： | 4/8页 |
| 文件大小： | 225K |
| 代理商： | SN74LS251M |
SN74LS251
http://onsemi.com
4
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VIK
Input Clamp Diode Voltage
0.65
1.5
V
VCC = MIN, IIN = 18 mA
VOH
Output HIGH Voltage
2.4
3.1
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
VOL
Output LOW Voltage
0.25
0.4
V
IOL = 12 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
0.35
0.5
V
IOL = 24 mA
IOZH
Output Off Current HIGH
20
μA
VCC = MAX, VOUT = 2.7 V
IOZL
Output Off Current LOW
20
μA
VCC = MAX, VOUT = 0.4 V
IIH
Input HIGH Current
20
μA
VCC = MAX, VIN = 2.7 V
0.1
mA
VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
0.4
mA
VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 2)
30
130
mA
VCC = MAX
ICC
Power Supply Current
10
mA
VCC = MAX, VE = 0 V
12
mA
VCC = MAX, VE = 4.5 V
2. Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
tPLH
tPHL
Propagation Delay,
Select to Z Output
20
21
33
ns
Figure 1
CL = 15 pF,
RL = 2.0 kΩ
tPLH
tPHL
Propagation Delay,
Select to Z Output
29
28
45
ns
Figure 2
tPLH
tPHL
Propagation Delay,
Data to Z Output
10
9.0
15
ns
Figure 1
tPLH
tPHL
Propagation Delay,
Data to Z Output
17
18
28
ns
Figures 2
tPZH
tPZL
Output Enable Time
to Z Output
17
24
27
40
ns
Figures 4, 5
tPZH
tPZL
Output Enable Time
to Z Output
30
26
45
40
ns
Figures 3, 5
tPHZ
tPLZ
Output Disable Time
to Z Output
37
15
55
25
ns
Figures 3, 5
CL = 5.0 pF,
RL = 667 kΩ
tPHZ
tPLZ
Output Disable Time
to Z Output
30
15
45
25
ns
Figures 4, 5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74LS251MEL | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LS251N | 功能描述:编码器、解码器、复用器和解复用器 8 to 1 RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SN74LS251N | 制造商:Texas Instruments 功能描述:Logic - Multiplexer and Demultiplexer I |
| SN74LS251N3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LS251NDS | 制造商:Motorola Inc 功能描述:LOGIC MUX, SINGLE, 8-INPUT, LS-TTL, 16 Pin, Plastic, DIP |
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