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PDF ST2129B Data sheet ( Hoja de datos )
| Número de pieza | ST2129B | |
| Descripción | 2-bit dual supply level translator | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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ST2129B
2-bit dual supply level translator without direction control pin, push-
pull output
Datasheet - production data
ESD performance on all pins: ±2 kV HBM
Small package and footprint
QFN8 1.4 x 1.2 x 0.55 mm
Applications
Low-voltage system level translation
Mobile phones and other mobile devices
QFN8
(1.4 x 1.2 x 0.55 mm)
Features
45 MHz: 90 Mbps (max.) data rate
at VL = 1.8 V, VCC = 3.3 V
Bi-directional level translation without direction
control pin
Wide voltage range (VL ≤ VCC):
– VL ranges from 1.65 to 3.6 V
– VCC ranges from VL to 5.5 V
Totem pole driving
5.5 V tolerant Enable pin
Description
The ST2129B device 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, VCC and VL,
set the logic levels on either side of the device.
Its architecture allows bi-directional level
translation without a control pin.
The ST2129B device accepts VL from 1.65 to
3.6 V and VCC from VL to 5.5 V, making it ideal for
data transfer between low-voltage ASICs/PLD
and higher voltage systems. This device has
a tristate output mode which can be used to
disable all I/Os.
Order code
ST2129BQTR
Table 1. Device summary
Package
Packing
QFN8 (1.4 x 1.2 x 0.55 mm) Tape and reel (3000 parts per reel)
Package topmark
1A
February 2013
This is information on a product in full production.
DocID023308 Rev 2
1/21
www.st.com
1
1 page  
ST2129B
1 Pin settings
1.1 Pin connection
Figure 1. Pin connection (top through view)
Pin settings
1.2 Pin description
Pin number
1
2
3
4
5
6
7
8
$0 Y
Table 2. Pin description
Symbol
VL
I/OVL1
I/OVL2
GND
OE
I/OVCC2
I/OVCC1
VCC
Name and function
Supply voltage
Data input/output
Data input/output
Ground
Output enable
Data input/output
Data input/output
Supply voltage
DocID023308 Rev 2
5/21
5 Page 
ST2129B
Electrical characteristics
Table 6. DC characteristics (continued)
Symbol Parameter
VL
Value
VCC
Test
conditions
TA = 25 °C
Min. Typ. Max.
VOLC
IOE
Low-level
output
voltage
(I/OVCC)
1.65 to 3.6 VL to 5.5
Control
input
leakage
current (OE)
1.65 to 3.6
VL to 5.5
IO = +60 µA
VI = GND or
VL
–
–
– 0.4
– 0.1
IIO_LKG
IQVCC
High-
impedance
leakage
current
(I/OVL,
I/OVCC)
Quiescent
supply
current VCC
1.65 to 3.6
VL to 5.5
OE = GND
I/OVL = high
I/OVCC = low
OE = GND
I/OVL = low
I/OVCC = high
1.65 to 3.6 VL to 5.5 OE = VL
–
–
–-
– 0.1
– 0.1
– 3.5
-40 to 85 °C
Min. Max.
– 0.4
–1
–1
–1
– 4.5
Unit
V
µA
µA
µA
µA
Quiescent
IQVL supply
current VL
1.65 to 3.6 VL to 5.5
OE = VL
– – 0.1
–
1 µA
IZ-VCC
IZ-VL
High-
impedance
quiescent
supply
current VCC
High-
impedance
quiescent
supply
current VL
1.65 to 3.6 VL to 5.5
1.65 to 3.6 VL to 5.5
OE = GND
I/O = Hi-Z
OE = GND
I/O = Hi-Z
–
–
– 0.1
– 0.1
–
–
1 µA
1 µA
DocID023308 Rev 2
11/21
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet ST2129B.PDF ] | |
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