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ST16C32245TTR Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce ST16C32245TTR
Description  14 BIT DUAL SUPPLY BUS TRANSCEIVER LEVEL TRANSLATOR, A SIDE SERIES RESISTOR, 2 BIT I2C LINES
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST16C32245TTR Fiches technique(HTML) 1 Page - STMicroelectronics

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October 2004
s
HIGH SPEED: tPD = 4.4ns (MAX.) at TA=85°C
VCCA = 3.0V VCCB = 2.3V
s
LOW POWER DISSIPATION:
ICCA = ICCB = 20µA(MAX.) at TA=85°C
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOHA| = IOLA = 8mA MIN at
VCCA = 3.0V VCCB = 1.65V or 2.3V
|IOHB| = IOLB = 6mA MIN at
VCCB = 1.65V VCCA = 3V)
s
BALANCED PROPAG. DELAYS: tPLH tPHL
s
POWER DOWN PROTECTION ON I/O
s
26
ΩSERIESRESISTOR ON ASIDEOUTPUTS
s
OPERATING VOLTAGE RANGE:
VCCA(OPR)=2.3V to 3.6V (1.2V Data Retent)
VCCB(OPR)=1.65V to 2.7V (1.2V Data Retent)
s
FAST I2C LINES 1.8V/2.8V LEVEL
TRANSLATOR: 400KHz GUARANTEED
DATA RATE AT CL = 15pF
s
BUS HOLD PROVIDED ON DATA INPUT
BOTH SIDE
s
LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17)
s
ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
DESCRIPTION
The ST16C32245 is a dual supply low voltage
CMOS 14-BIT BUS TRANSCEIVER fabricated
with sub-micron silicon gate and five-layer metal
wiring C2MOS technology. Designed for use as an
interface between a 3.3V bus and a 2.5V or 1.8V
bus in a mixed 3.3V/1.8V,3.3V/2.5V and 2.5V/
1.8V supply systems, it achieves high speed
operation while maintaining the CMOS low power
dissipation
and
it
includes
2-bit
I2C
level
translation. This IC is intended for two-way
asynchronous
communication
between
data
buses and the direction of data transmission is
determined by nDIR inputs. The enable inputs nG
can be used to disable the device so that the
buses
are
effectively
isolated.
The
A-port
interfaces with the 3V bus, the B-port with the 2.5V
and 1.8V bus. All inputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage. All floating bus terminals during High Z
State don’t need external pull-up or pull-down
resistor.
ST16C32245
14 BIT DUAL SUPPLY BUS TRANSCEIVER LEVEL
TRANSLATOR, A SIDE SERIES RESISTOR, 2 BIT I2C LINES
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
Table 1: Order Codes
PACKAGE
T & R
TSSOP48
ST16C32245TTR
TFBGA54
ST16C32245LBR
µTFBGA42
ST16C32245TBR
TSSOP
µTFBGA
TFBGA
PRELIMINARY DATA
Figure 1: Logic Diagram
Rev. 1


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