ST16C32245 Datasheet, PDF (1/20 Pages) STMicroelectronics – 14 BIT DUAL SUPPLY BUS TRANSCEIVER LEVEL TRANSLATOR, A SIDE SERIES RESISTOR, 2 BIT I2C LINES

ST16C32245
14 BIT DUAL SUPPLY BUS TRANSCEIVER LEVEL
TRANSLATOR, A SIDE SERIES RESISTOR, 2 BIT I²C LINES
s HIGH SPEED: t_PD = 4.4ns (MAX.) at T_A=85°C
V_CCA = 3.0V V_CCB = 2.3V
s LOW POWER DISSIPATION:
I_CCA = I_CCB = 20µA(MAX.) at T_A=85°C
s SYMMETRICAL OUTPUT IMPEDANCE:
|I_OHA| = I_OLA = 8mA MIN at
V_CCA = 3.0V V_CCB = 1.65V or 2.3V
|I_OHB| = I_OLB = 6mA MIN at
V_CCB = 1.65V V_CCA = 3V)
s BALANCED PROPAG. DELAYS: t_PLH ≅ t_PHL
s POWER DOWN PROTECTION ON I/O
s 26Ω SERIES RESISTOR ON A SIDE OUTPUTS
s OPERATING VOLTAGE RANGE:
V_CCA(OPR)=2.3V to 3.6V (1.2V Data Retent)
V_CCB(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 C_L = 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
PRELIMINARY DATA
TSSOP
TFBGA
µTFBGA
Table 1: Order Codes
PACKAGE
TSSOP48
TFBGA54
µTFBGA42
T&R
ST16C32245TTR
ST16C32245LBR
ST16C32245TBR
Figure 1: Logic Diagram
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.
October 2004
Rev. 1
1/20
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.