ST2329I
2-bit dual-supply level translator with auto-direction feature
and integrated pull-up
Target specification
Features
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■
■
■
■
■
■
■
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■
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18 Mbps (max.) data rate when driven by
a totem pole driver
6.8 Mbps (max.) data rate when driven by
an open drain pole driver
Bidirectional level translation, without direction
pin
Wide V
L
voltage range of 1.65 V to 3.6 V
Wide V
CC
voltage range of 1.80 V to 5.5 V
Integrated 10 kΩ pull-up on both V
CC
and V
L
sides
Power-down mode feature; when either supply
is off, all I/Os are in high impedance
Low quiescent current (max. 4 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 - QFN10
(1.8 x 1.4 mm) package
Table 1.
Order code
ST2329IQTR
QFN10 (1.8 x 1.4 mm)
Device summary
Package
QFN10
(1.8 x 1.4 mm)
Packing
Tape and reel
(3000 parts per reel)
Applications
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Low voltage system level translation
Mobile phones and other mobile devices
I
2
C level translation
UART level translation
March 2011
Doc ID 018508 Rev 1
1/22
www.st.com
1
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
Contents
ST2329I
Contents
1
2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
Supplementary notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.1
2.1.2
2.1.3
Driver requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Load driving capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power-off feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2
2.3
AC characteristics (device driven by open drain driver) . . . . . . . . . . . . . . 11
AC characteristics (device driven by totem pole driver) . . . . . . . . . . . . . . 13
3
4
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2/22
Doc ID 018508 Rev 1
ST2329I
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
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DC characteristics (over recommended operating conditions unless otherwise noted.
All typical values are at T
A
= 25 °C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
For test conditions: V
L
= 1.65 to 1.8 V (load C
L
= 15 pF; R
up
= 4.7 kΩ;
driver t
r
= t
f
≤
2 ns) overtemperature range –40 °C to 85 °C . . . . . . . . . . . . . . . . . . . . . . . . 11
For test conditions: V
L
= 2.5 to 2.7 V (load C
L
= 15 pF; R
up
= 4.7 kΩ;
driver t
r
= t
f
≤
2 ns) overtemperature range –40 °C to 85 °C . . . . . . . . . . . . . . . . . . . . . . . . 11
For test conditions: V
L
= 2.7 to 3.6 V (load C
L
= 15 pF; R
up
= 4.7 kΩ;
driver t
r
= t
f
≤
2 ns) overtemperature range –40 °C to 85 °C . . . . . . . . . . . . . . . . . . . . . . . . 12
For test conditions: V
L
= 1.65 to 1.8 V (load C
L
= 15 pF; R
up
= 10 kΩ;
driver t
r
= t
f
≤
2 ns) overtemperature range –40 °C to 85 °C . . . . . . . . . . . . . . . . . . . . . . . . 13
For test conditions: VL = 2.5 to 2.7 V (load C
L
= 15 pF; R
up
= 10 kΩ;
driver t
r
= t
f
≤
2 ns) overtemperature range –40 °C to 85 °C . . . . . . . . . . . . . . . . . . . . . . . . 13
For test conditions: V
L
= 2.7 to 3.6 V (load C
L
= 15 pF; R
up
= 10 kΩ;
driver t
r
= t
f
≤
2 ns) overtemperature range –40 °C to 85 °C . . . . . . . . . . . . . . . . . . . . . . . . 14
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Waveform symbol value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Mechanical data for QFN10 (1.8 x 1.4 x 0.5 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . . 17
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Doc ID 018508 Rev 1
3/22
List of figures
ST2329I
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Device block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Waveform - propagation delay (f = 1 MHz, 50% duty cycle). . . . . . . . . . . . . . . . . . . . . . . . 15
Waveform - output enable/disable (f = 1 MHz, 50% duty cycle) . . . . . . . . . . . . . . . . . . . . . 15
Package outline for QFN10 (1.8 x 1.4 x 0.5 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . . 16
Footprint recommendation for QFN10 (1.8 x 1.4 x 0.5 mm) - 0.40 mm pitch . . . . . . . . . . . 17
Carrier tape for QFN10 (1.8 x 1.4 x 0.5 mm) - 0.40 mm pitch . . . . . . . . . . . . . . . . . . . . . . 18
Reel information for QFN10 (1.8 x 1.4 x 0.5 mm) - 0.40 mm pitch - back view . . . . . . . . . 19
Reel information for QFN10 (1.8 x 1.4 x 0.5 mm) - 0.40 mm pitch - front view. . . . . . . . . . 20
4/22
Doc ID 018508 Rev 1
ST2329I
Description
1
Description
ST2329I is a 2-bit dual-supply level translator which provides the level shifting capability to
allow data transfer in a multi-voltage system. Externally applied voltages, V
CC
and V
L
, set
the logic levels on either side of the device. It utilizes a transmission gate based design that
allows bidirectional level translation without a control pin.
The ST2329I accepts V
L
from 1.65 V to 3.6 V and V
CC
from 1.80 V 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 the I/Os.
The ST2329I supports power-down mode when V
CC
is grounded/floating and the device is
disabled via the OE pin. The device has integrated 10 kΩ pull-ups on both sides.
Doc ID 018508 Rev 1
5/22
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