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PDF UM3208 Data sheet ( Hoja de datos )

Número de pieza UM3208
Descripción 8-Bit Bidirectional Voltage-Level Translator
Fabricantes Union Semiconductor 
Logotipo Union Semiconductor Logotipo



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No Preview Available ! UM3208 Hoja de datos, Descripción, Manual

UM3208
8-Bit Bidirectional Voltage-Level Translator for Open-Drain and
Push-Pull Application
UM3208 CSP20
General Description
The UM3208 is ±15kV 8-channel ESD-protected level translator provide the level shifting
necessary 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. A low-voltage logic signal present on the
VCCA side of the device appears as a high-voltage logic signal on the VCCB side of the device, and
vice-versa. The UM3208 bidirectional level translator utilizes a transmission-gate based design to
allow data translation in either direction (VCCAVCCB) on any single data line. The UM3208
accepts VCCA from +1.65V to +3.6V and VCCB from +2.3V to +5.5V, making it ideal for data
transfer between low-voltage ASICs / PLDs and higher voltage systems.
The UM3208 enters a three-state output mode to reduce supply current when output enable (OE)
is low. The UM3208 is designed so that the OE input circuit is supplied by VCCA. ±15kV ESD
protection on the VCCB side for greater protection in applications that route signals externally. The
UM3208 is a 8-channel level translator available in 3.0×2.5 CSP20 bump package.
Applications
Features
z SPI, MICROWIRE, and I2C Level z Max Data Rates:
Translation
24Mbps(Push Pull),
z Low-Voltage ASIC Level Translation
2Mbps(Open Drain)
z Smart Card Readers
z Bidirectional Level Translation
z Cell-phone Cradles
z 1.65V to 3.6V on A port and 2.3V to 5.5V
z Portable POS Systems
z Portable Communication Devices
on B port(VCCAVCCB)
z ±15kV ESD Protection on B port
z Low-Cost Serial Interfaces
z No Power-Supply Sequencing Required
z Cell-Phones
z GPS
z Telecommunications Equipment
VCCA or VCCB Can Be Ramped First
z CSP20 bump Package
Pin Configurations
(Bottom View)
(Top View)
MMonth Code
UM3208
CSP20
________________________________________________________________________
http://www.union-ic.com Rev.01 Jan.2011
1/11

1 page




UM3208 pdf
UM3208
Timing Requirements
Over recommended operating free-air temperature range, VCCA= 3.3V±0.3V (unless otherwise noted)
VCCB=3.3V VCCB=5V±
±0.3V
0.5V
Unit
Min Max Min Max
Data Rate
Push-pull driving
Open-drain driving
24
2
24
2
Mbps
tw Pulse
duration
Push-pull driving
Open-drain driving
Data inputs
41
500
41
500
ns
Switching Characteristics
Over recommended operating free-air temperature range, VCCA= 1.8V±0.15V (unless otherwise noted)
Paramete From
To
r (Input) (Output)
Test
Conditions
VCCB=2.5V
±0.2V
Min Max
VCCB=3.3V
±0.3V
Min Max
VCCB=5V±
0.5V
Min Max
Unit
tPHL
A
tPLH
Push-pull
4.6 4.7
5.8
B
Open-drain 2.9
Push-pull
8.8 2.9
6.8
9.6 3
6.8
10
7
ns
Open-drain 45 260 36 208 27
198
tPHL
B
tPLH
Push-pull
4.4 4.5
4.7
A
Open-drain 1.9
Push-pull
5.3 1.1
5.3
4.4 1.2
4.5
4
0.5
ns
Open-drain 45 175 36 140 27
102
ten
OE
A
B
200 200
200 200
200
200
ns
tdis
OE
A
B
50 40
50 40
35
35
ns
trA
A port rise time
Push-pull 3.2 9.5 2.3 9.3 2
Open-drain 38 165 30 132 22
7.6
95
ns
trB
B port rise time
Push-pull 4 10.8 2.7 9.1 2.7
Open-drain 34 145 23 106 10
7.6
58
ns
tfA
A port fall time
Push-pull 2
5.9 1.9
Open-drain 4.4 6.9 4.3
6 1.7
6.4 4.2
13.3
6.1
ns
tfB
B port fall time
Push-pull 2.9 7.6 2.8 7.5 2.8
Open-drain 6.9 13.8 7.5 16.2 7
8.8
16.2
ns
tSK(O)
Channel-to-channe
l
11
1 ns
Max data
Push-pull
24 24
24
rate
Open-drain 2 2
2 Mbps
________________________________________________________________________
http://www.union-ic.com Rev.01 Jan.2011
5/11

5 Page





UM3208 arduino
UM3208
IMPORTANT NOTICE
The information in this document has been carefully reviewed and is believed to be
accurate. Nonetheless, this document is subject to change without notice. Union assumes
no responsibility for any inaccuracies that may be contained in this document, and makes
no commitment to update or to keep current the contained information, or to notify a
person or organization of any update. Union reserves the right to make changes, at any
time, in order to improve reliability, function or design and to attempt to supply the best
product possible.
Union Semiconductor, Inc
Add: 7F, No. 5, Bibo Road, Shanghai 201203
Tel: 021-51097928
Fax: 021-51026018
Websitewww.union-ic.com
________________________________________________________________________
http://www.union-ic.com Rev.01 Jan.2011
11/11

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