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参数资料
| 型号： | SN74AS257DRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | AS SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16 |
| 封装： | GREEN, PLASTIC, SOIC-16 |
| 文件页数： | 18/21页 |
| 文件大小： | 824K |
| 代理商： | SN74AS257DRG4 |
SN54ALS257A, SN54ALS258A, SN74ALS257A, SN74ALS258A, SN74AS257, SN74AS258
QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS
WITH 3STATE OUTPUTS
SDAS124C APRIL 1982 REVISED AUGUST 1996
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS257
SN74AS258
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.2
V
VOH
VCC = 4.5 V to 5.5 V,
IOH = 2 mA
VCC 2
V
VOH
VCC = 4.5 V,
IOH = 15 mA
2.4
3.2
V
VOL
VCC = 4.5 V,
IOL = 48 mA
0.35
0.5
V
IOZH
VCC = 5.5 V,
VO = 2.7 V
50
A
IOZL
VCC = 5.5 V,
VO = 0.4 V
50
A
II
A, B, or OE
VCC = 5.5 V,
VI = 7 V
0.1
mA
II
A/B
VCC = 5.5 V,
VI = 7 V
0.2
mA
IIH
A, B, or OE
VCC = 5.5 V,
VI = 2.7 V
20
A
IIH
A/B
VCC = 5.5 V,
VI = 2.7 V
40
A
IIL
A, B, or OE
VCC = 5.5 V,
VI = 0.4 V
0.5
mA
IIL
A/B
VCC = 5.5 V,
VI = 0.4 V
1
mA
IO
VCC = 5.5 V,
VO = 2.25 V
30
112
mA
Outputs high
12.1
19.7
SN74AS257
VCC = 5.5 V
Outputs low
19
30.6
ICC
SN74AS257
VCC = 5.5 V
Outputs disabled
19.7
31.9
mA
ICC
Outputs high
8.4
13.5
mA
SN74AS258
VCC = 5.5 V
Outputs low
15.2
24.6
SN74AS258
VCC = 5.5 V
Outputs disabled
15.5
25.2
All typical values are at VCC = 5 V, TA = 25°C.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74AS257FN | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74AS257N | 功能描述:编码器、解码器、复用器和解复用器 Quad 2-to-1 Data Slct/Mltpx W/3St Otp 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 |
| SN74AS257NE4 | 功能描述:编码器、解码器、复用器和解复用器 Quad 2-to-1 Data Slct/Mltpx W/3St Otp 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 |
| SN74AS257NSR | 功能描述:编码器、解码器、复用器和解复用器 Quad 2-to-1 Data Slct/Mltpx W/3St Otp 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 |
| SN74AS257NSRE4 | 功能描述:编码器、解码器、复用器和解复用器 Quad 2-to-1 Data Slct/Mltpx W/3St Otp 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 |
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