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ST2349A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 | ST2349A |
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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ST2349Aダウンロード(pdfファイル)リンクがあります。 Total 23 pages
Features
■ 90 Mbps (max) data rate when driven by a
totem pole driver
■ 8 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
ST2349A
4-bit dual supply level translator
without direction control pin
Preliminary Data
QFN16L
(2.6 x 1.8 mm)
Description
The ST2349A 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 thathttp://www.DataSheet4U.net/
allows bi-directional level translation without a
control pin.
The ST2349A 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 ST2349A supports power down mode when
VCC is grounded/floating and the device is
disabled via the OE pin.
Table 1.
Device summary
Order code
ST2349AQTR
Package
QFN16 (2.6 x 1.8 mm)
Packaging
Tape and reel (3000 parts per reel)
July 2008
Rev 4
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
1/23
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23
datasheet pdf - http://www.DataSheet4U.net/
1 Page ST2349A
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
ST2349A pin description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DC characteristics (over recommended operating conditions unless otherwise noted. All typ-
ical values are at TA = 25 °C)9
AC characteristics - test conditions: VL = 1.65 - 1.8 V (load CL = 15 pF; Rup = 4.7 kΩ; driver
tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
AC characteristics - test conditions: VL = 2.5 - 2.7 V (load CL = 15 pF; Rup = 4.7 kΩ; driver
tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
AC characteristics - test conditions: VL = 2.7 - 3.6 V (load CL = 15 pF; Rup = 4.7 kΩ; driver
tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
AC characteristics (test conditions: VL = 1.65 - 1.8 V (load CL = 15 pF; Rup = 10 kΩ; driver
tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C) . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
AC characteristics (test conditions: VL = 2.5 - 2.7 V (load CL = 15 pF; Rup = 10 kΩ; driver
tr = tf ≤2 ns) over temperature range -40 °C to 85 °C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
AC characteristics (test conditions: VL = 2.7 - 3.6 V (load CL = 15 pF; Rup = 10 kΩ; driver
tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C) . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Test circuit switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Waveform symbol value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
QFN16L (2.6 x 1.8 mm) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
http://www.DataSheet4U.net/
3/23
datasheet pdf - http://www.DataSheet4U.net/
3Pages Device block diagrams
2 Device block diagrams
Figure 2. ST2349A block diagram
VL ST2349A
EN
OE
VL
VCC
ST2349A
I/O VL
GND
I/O VCC
GND
= one-shot circuit
* ST2349A has 4 channels. For simplicity, the above diagram shows only 1 channel.
* When OE is low, all I/Os are in high-impedance mode.
AM00709V1
Figure 3.
Application block diagram
http://www.DataSheet4U.net/
VL
0.1μF
VL V L VL VL
VCC VCCVCC VCC
0.1 μF 1 μF
VCC
VL 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 | ||
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PDF ダウンロード | [ ST2349A 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 |
ST2349 | 4-bit dual supply level translator | STMicroelectronics |
ST2349A | 4-bit dual supply level translator | STMicroelectronics |