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参数资料
| 型号： | SN74AVC157D |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | AVC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16 |
| 封装： | PLASTIC, SO-16 |
| 文件页数： | 1/9页 |
| 文件大小： | 154K |
| 代理商： | SN74AVC157D |
SN74AVC157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR/MULTIPLEXER
SCES257C – APRIL 1999 – REVISED FEBRUARY 2000
2–93
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
D DOC (Dynamic Output Control) Circuit
Dynamically Changes Output Impedance,
Resulting in Noise Reduction Without
Speed Degradation
D Dynamic Drive Capability Is Equivalent to
Standard Outputs With IOH and IOL of
±24 mA at 2.5-V VCC
D Overvoltage-Tolerant Inputs/Outputs Allow
Mixed-Voltage-Mode Data Communications
D Ioff Supports Partial-Power-Down Mode
Operation
D Package Options Include Plastic
Small-Outline (D), Thin Very Small-Outline
(DGV), and Thin Shrink Small-Outline (PW)
Packages
description
A Dynamic Output Control (DOC) circuit is implemented, which, during the transition, initially lowers the output
impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1
shows typical VOL vs IOL and VOH vs IOH curves to illustrate the output impedance and drive capability of the
circuit. At the beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is
equivalent to a high-drive standard-output device. For more information, refer to the TI application reports, AVC
Logic Family Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC
)
Circuitry Technology and Applications, literature number SCEA009.
136
–128
–144
–160
0.4
0.8
1.2
1.6
2.0
2.4
2.8
170
153
119
102
85
68
51
34
17
0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
TA = 25°C
Process = Nominal
IOL – Output Current – mA
VCC = 3.3 V
VCC = 2.5 V
VCC = 1.8 V
–
Output
V
oltage
–
V
OL
V
TA = 25°C
Process = Nominal
IOH – Output Current – mA
VCC = 3.3 V
VCC = 2.5 V
VCC = 1.8 V
–
Output
V
oltage
–
V
OH
V
–80
–96
–112
–32
–48
–64
0
–16
Figure 1. Output Voltage vs Output Current
This quadruple 2-line to 1-line data selector/multiplexer is operational at 1.2-V to 3.6-V VCC, but is designed
specifically for 1.65-V to 3.6-V VCC operation.
The SN74AVC157 features a common strobe (G) input. When the strobe is high, all outputs are low. When the
strobe is low, a 4-bit word is selected from one of two sources and is routed to the four outputs. The device
provides true data.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
The SN74AVC157 is characterized for operation from –40
°C to 85°C.
PRODUCT
PREVIEW
Copyright
2000, Texas Instruments Incorporated
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
DOC and EPIC are trademarks of Texas Instruments Incorporated.
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| SN74AVC16820DGGR | AVC SERIES, 10-BIT DRIVER, TRUE OUTPUT, PDSO56 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74AVC16244DGGR | 功能描述:缓冲器和线路驱动器 16bit RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| SN74AVC16244DGGR | 制造商:Texas Instruments 功能描述:Driver IC |
| SN74AVC16244DGGRG4 | 制造商:Texas Instruments 功能描述:IC, QUAD 4-BIT DRIVER, TRUE OUTPUT, TSSOP-48, LEAD FREE |
| SN74AVC16244DGVR | 功能描述:缓冲器和线路驱动器 16bit RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| SN74AVC16244GQLR | 功能描述:缓冲器和线路驱动器 16bit RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
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