ST2189 Datasheet, PDF (1/21 Pages) STMicroelectronics – 8-bit dual supply level translator without direction control pin

ST2189
8-bit dual supply level translator without direction control pin
Features
■ 46 MHz: 92 Mbps data transfer when V_CCA =
3.6 V
■ Bidirectional level translation without direction
control pin
■ Wide voltage range of 1.65 V to 3.6 V for both
V_CCA and V_CCB
■ Configurable voltage translation:
– V_CCA can be ≥ V_CCB or V_CCA can be ≤V_CCB
■ Partial power down support - when V_CCB 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, V_CCB and V_CCA, set the logic
levels on either side of the device. Its architecture
allows bidirectional level translation without a
control pin.
The ST2189 accepts V_CCA from 1.65 V to 3.6 V
and V_CCB 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 V_CCB supply
is grounded, all I/Os go to high impedance
automatically, with very low quiescent current on
V_CCA supply.
Table 1.
Device summary
Order code
ST2189QTR
Package
QFN20 (3.2 x 1.8 mm)
Packing
Tape and reel
August 2009
Doc ID 15918 Rev 1
1/21
www.st.com
21