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PDF ST2189 Data sheet ( Hoja de datos )
| Número de pieza | ST2189 | |
| Descripción | 8-bit dual supply level translator without direction control pin | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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ST2189
8-bit dual supply level translator without direction control pin
Features
■ 46 MHz: 92 Mbps data transfer when VCCA =
3.6 V
■ Bidirectional level translation without direction
control pin
■ Wide voltage range of 1.65 V to 3.6 V for both
VCCA and VCCB
■ Configurable voltage translation:
– VCCA can be ≥ VCCB or VCCA can be ≤VCCB
■ Partial power down support - when VCCB is
grounded, all the outputs will automatically go
to high impedance.
■ Low quiescent current (5 µA)
■ ESD performance:
– ±4 kV HBM (human body model)
Applications
■ Low voltage system level translation
■ Mobile phones
■ Other mobile devices
QFN20
(1.8 x 3.2 mm)
Description
The ST2189 is an 8-bit dual supply level translator
which provides the level shifting capability to allow
data transfer in a multi-voltage system. Externally
applied voltages, VCCB and VCCA, set the logic
levels on either side of the device. Its architecture
allows bidirectional level translation without a
control pin.
The ST2189 accepts VCCA from 1.65 V to 3.6 V
and VCCB from 1.65 V to 3.6 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.
In power down mode feature - when VCCB supply
is grounded, all I/Os go to high impedance
automatically, with very low quiescent current on
VCCA supply.
Table 1.
Device summary
Order code
ST2189QTR
Package
QFN20 (3.2 x 1.8 mm)
Packing
Tape and reel
www.DataSAhuegeut4sUt .2c0om09
Doc ID 15918 Rev 1
1/21
www.st.com
21
1 page  
ST2189
2.1 Device block diagram
Figure 3. ST2189 block diagram
Logic diagram
Figure 4. Application block diagram
www.DataSheet4U.com
Doc ID 15918 Rev 1
5/21
5 Page 
ST2189
Electrical characteristics
Table 8.
For test conditions: VCCA = 2.5 V (load CL= 15 pF; driver tr = tf ≤2 ns) overtemperature
range -40 °C to 85 °C
Symbol
Parameter
VCCB = 1.65V - 2.5 V
Min Max
VCCB = 2.7V - 3.6 V
Min Max
Unit
tRVCCB
tFVCCB
tRVCCA
tFVCCA
tI/OVCCA-
VCCB
tI/OVCCB-
VCCA
tPZL tPZH
tPLZ tPHZ
Output rise time I/OVCCB
Output fall time I/OVCCB
Output rise time I/OVCCA
Output fall time I/OVCCA
Propagation delay time
I/OVCCA-LH to I/OVCCB-LH
I/OVCCA-HL to I/OVCCB-HL
Propagation delay time
I/OVCCB-LH to I/OVCCA-LH
I/OVCCB-HL to I/OVCCA-HL
Output enable time
Output disable time
DR Data rate(1)
tPLH
tPHL
tPLH
tPHL
Clock
Data
-
-
-
-
-
-
-
-
-
-
40
80
2.5 - 1.4 ns
1.6 - 1.2 ns
2.1 - 2.0 ns
1.4 - 1.4 ns
4.7 - 3.3 ns
2.9 - 2.6 ns
4.3 - 3.8 ns
3.3 - 2.8 ns
25 - 12 ns
150 - 180 ns
- 42 - MHz
- 84 - Mbps
1. Data rates are measured at worst case condition when all 8 channels are switching at the same time. Data rate is
guaranteed based on the condition that output I/O signal rise/fall time is less than 15% of period of input I/O signal; input I/O
signal is at 50% duty-cycle and output I/O signal duty-cycle deviation is less than 50% ± 10%.
www.DataSheet4U.com
Doc ID 15918 Rev 1
11/21
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet ST2189.PDF ] | |
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