|
|
ST2349のメーカーはSTMicroelectronicsです、この部品の機能は「4-bit dual supply level translator」です。 |
部品番号 | ST2349 |
| |
部品説明 | 4-bit dual supply level translator | ||
メーカ | STMicroelectronics | ||
ロゴ | |||
このページの下部にプレビューとST2349ダウンロード(pdfファイル)リンクがあります。 Total 23 pages
ST2349
4-bit dual supply level translator
without direction control pin
Features
■ 45 Mbps (max) data rate when driven by a
totem pole driver
■ 4 Mbps (max) data rate when driven by an
open drain pole driver
■ Bi-directional level translation without
direction control pin
■ Wide VL voltage range of 1.65 to 3.6 V
■ Wide VCC voltage range of 1.80 to 5.5 V
■ Power down mode feature – when either
supply is off, all I/Os are in high impedance
■ Low quiescent current (max 24 µA)
■ Able to be driven by totem pole and open drain
drivers
■ 5.5 V tolerant enable pin
■ ESD performance on all pins: ±2 kV HBM
■ Small package and footprint
QFN16 (2.6 x 1.8 mm) package
Applications
■ Low voltage system level translation
■ Mobile phones and other mobile devices
■ I2C level translation
■ UART level translation
QFN16L
(2.6 x 1.8 mm)
Description
The ST2349 is a 4-bit dual supply level translator
which provides the level shifting capability to allow
data transfer in a multi-voltage system. Externally
applied voltages, VCC and VL, set the logic levels
on either side of the device. It utilizes
transmission gate-based design that allows bi-http://www.DataSheet4U.net/
directional level translation without a control pin.
The ST2349 accepts a VL from 1.65 to 3.6 V and
VCC from 1.80 to 5.5 V, making it ideal for data
transfer between low-voltage ASICs/PLD and
higher voltage systems. This device has a tri-state
output mode which can be used to disable all
I/Os.
The ST2349 supports power down mode when
VCC is grounded/floating and the device is
disabled via the OE pin.
Table 1.
Device summary
Order code
ST2349QTR
Package
QFN16 (2.6 x 1.8 mm)
Packaging
Tape & reel (3000 parts per reel)
November 2007
Rev 3
1/23
www.st.com
23
datasheet pdf - http://www.DataSheet4U.net/
1 Page ST2349
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
ST2349 pin connection (top through view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ST2349 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Application block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Waveform - propagation delay (f = 1 MHz; 50% duty cycle). . . . . . . . . . . . . . . . . . . . . . . . 16
Waveform - output enable and disable time (f = 1 MHz; 50% duty cycle) . . . . . . . . . . . . . 17
QFN16L (2.6 x 1.8 mm) package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
QFN16L (2.6 x 1.8 mm) footprint recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
QFN16L (2.6 x 1.8 mm) carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
QFN16L (2.6 x 1.8 mm) reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
http://www.DataSheet4U.net/
3/23
datasheet pdf - http://www.DataSheet4U.net/
3Pages Device block diagrams
2 Device block diagrams
Figure 2. ST2349 block diagram
VL ST2349
EN
OE
VL
VCC
ST2349
I/O VL
GND
I/O VCC
GND
= one-shot circuit
* ST2349 has 4 channels. For simplicity, the above diagram shows only 1 channel.
* When OE is low, all I/Os are in high-impedance mode.
Figure 3. Application block diagram
CS00021
VL
0.1μF
VL V L VL VL
http://www.DataSheet4U.net/
VL
VCC
VCC VCCVCC VCC
0.1 μF 1 μF
VCC
VL
system
controller
I/OVL1
I/OVL2
I/OVL3
I/OVL4
OE
I/OVCC1
I/OVCC2
I/OVCC3
I/OVCC4
VCC
system
controller
CD00023
6/23
datasheet pdf - http://www.DataSheet4U.net/
6 Page | |||
ページ | 合計 : 23 ページ | ||
|
PDF ダウンロード | [ ST2349 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
ST2341 | P-Channel Enhancement Mode MOSFET | Stanson |
ST2341A | P-Channel Enhancement Mode MOSFET | Stanson |
ST2342 | N-Channel Enhancement Mode MOSFET | Stanson |
ST2349 | 4-bit dual supply level translator | STMicroelectronics |