ST1G3234 1-BIT DUAL SUPPLY BUS BUFFER LEVEL TRANSLATOR WITH A SIDE SERIES RESISTOR ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 4.4ns (MAX.) at TA=85°C VCCB = 1.65V; VCCA = 3.0V LOW POWER DISSIPATION: ICCA = ICCB = 5µA(MAX.) at TA=85°C SYMMETRICAL OUTPUT IMPEDANCE: |IOHA| = IOLA = 10mA MIN at VCCA = 2.75V; VCCB = 1.4V to 3.6V |IOHA| = IOLA = 6mA MIN at VCCA = 2.3V; VCCB = 1.4 to 3.6V) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL POWER DOWN PROTECTION ON INPUTS AND OUTPUTS 26Ω SERIES RESISTOR ON A SIDE OUTPUTS OPERATING VOLTAGE RANGE: VCCA(OPR) = 1.4V to 3.6V (1.2V Data Retent) VCCB(OPR) = 1.4V to 3.6V (1.2V Data Retent) MAX DATA RATES: 380 Mbps (1.8V to 3.3V translation) 260 Mbps (<1.8V to 3.3V translation) 260 Mbps (Translate to 2.5V) 210 Mbps (Translate to 1.5V) LATCH-UP PERFORMANCE EXCEEDS 500mA (JESD 17) ESD PERFORMANCE: HBM > 2000V (MIL STD 883 method 3015); MM > 200V ROHS Compliant for FLIPCHIP Package FLIP-CHIP Table 1: Order Codes PACKAGE T&R Comments FLIP-CHIP5 ST1G3234BJR 4000 parts per reel All inputs are equipped with protection circuits against static discharge, giving them ESD immunity and transient excess voltage. Figure 1: Logic Diagram DESCRIPTION The ST1G3234 is a dual supply low voltage CMOS 1-BIT BUS BUFFER level translator 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, 1.8V/1.4V and 2.5V/1.8V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation. This IC is intended for one-way asynchronous communication between data buses. The input and output power down protections disable the device when both power supply are down, so that the buses are effectively isolated. The input tolerant buffers allow to translate VCCB compatible signals and greater signals than VCCB up/down to VCCA. May 2005 Rev. 5 1/11 ST1G3234 Figure 2: Input And Output Equivalent Circuit Table 2: Pin Description PIN° SYMBOL NAME AND FUNCTION A1 A1 Data Output (VCCA referred) C1 B1 Data Input (VCCB referred) B2 A3 GND VCCA Ground (0V) Positive Supply Voltage C3 VCCB Positive Supply Voltage Figure 3: Pin Connection (Top through view) Table 3: Truth Table 2/11 INPUTS B1 (VCCB Referred) OUTPUTS A1 (VCCA Referred) L H L H ST1G3234 Table 4: Absolute Maximum Ratings Symbol Parameter Value Unit VCCA Output Supply Voltage -0.5 to +4.6 V VCCB Input Supply Voltage -0.5 to +4.6 V VOA DC Output Voltage (Power Down Mode: VCCA=VCCB=Gnd) -0.5 to +4.6 V VIB DC Input Voltage (Power Down Mode: VCCA=VCCB=Gnd) VOA DC Output Voltage VIB DC Input Voltage IIK -0.5 to +4.6 V -0.5 to VCCA + 0.5 -0.5 to +4.6 V DC Input Diode Current − 20 mA IOK DC Output Diode Current − 50 mA IOA DC Output Current ± 50 mA ICCA DC VCCA or Ground Current ± 100 mA ICCB DC VCCB or Ground Current ± 100 mA 200 mW -65 to +150 °C 260 °C Pd Power Dissipation Tstg Storage Temperature TL Lead Temperature (10 sec) V Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under these conditions is not implied Table 5: Recommended Operating Conditions Symbol Parameter VCCA Supply Voltage VCCB Value Unit 1.4 to 3.6 V Supply Voltage 1.4 to 3.6 V VIB Input Voltage (B1) V VOA Output Voltage (A1) 0 to VCCB 0 to VCCA Top Operating Temperature -40 to 85 °C Input Rise and Fall Time (note 1) dt/dv V VCCB = 3.0 to 3.6V 0 to 10 ns/V VCCB = 2.3 to 2.7V 0 to 20 ns/V VCCB = 1.4 to 1.95V 0 to 100 ns/V 1) VI from 0.8V to 2.0V at VCC = 3.0V 3/11 ST1G3234 Table 6: DC Specification Test Condition Symbol VIHB VILB Parameter High Level Input Voltage Low Level Input Voltage 2.5 3.3 1.4 1.8 High Level Output Voltage Min. 0.65VCCB 0.65VCCB 0.65VCCB 0.65VCCB 1.6 2.0 1.6 2.0 1.4 to 3.6V Max. V 0.35VCCB 0.35VCCB 0.35VCCB 0.35VCCB 0.7 0.8 0.7 0.8 V IO=-100µA 1.2 1.2 IO=-10mA 2.2 2.2 2.3 IO=-8mA 1.8 1.8 1.65 IO=-6mA 1.4 1.4 1.4 IO=-2mA 1.1 1.1 1.4 IO=100µA 0.20 0.20 2.75 IO=1mA 0.40 0.40 2.75 IO=10mA 0.55 0.55 2.3 IO=6mA 0.40 0.40 1.65 IO=2mA 0.25 0.25 1.4 IO=1mA 0.20 0.20 2.7 3.6 VIB =VCCB or GND ± 0.5 ±5 µA 1.4 2.7 VIB =3.6V or GND ± 0.5 ±5 µA 0 0 VIB=GND to 3.6V VOA=GND to 3.6V ± 1.0 ± 10 µA Low Level Output Voltage Input Leakage Current Max. Unit 1.4 1.4 to 3.6V IIB 1.4 to 3.6V Typ. -40 to 85 °C 2.75 1.4 to 3.6V VOLA Min. 1.4 2.5 3.3 VOHA TA = 25 °C VCCB VCCA (V)(*) (V)(*) 1.8 Value V V IOFF Power Off Leakage Current ICCtB Quiescent Supply Current 1.4 1.4 V =V IB CCB or GND to to 3.6V 3.6V 0.5 5 µA ICCtA Quiescent Supply Current 1.4 1.4 V =V IB CCB or GND to to 3.6V 3.6V 0.5 5 µA (*) VCC range = 3.3±0.3; 2.5±0.2V; 1.8±0.15V 4/11 ST1G3234 Table 7: AC Electrical Characteristics Test Condition Symbol tPLH tPHL tPLH tPHL Parameter Propagation Delay Time B1 to A1 Propagation Delay Time B1 to A1 Value -40 to 85 °C VCCB (V) VCCA (V) Min. Max. 2.3 to 3.6 1.4 to 1.95 2.3 to 3.6 1.4 to 1.95 1.4 to 1.95 1.4 to 1.95 2.3 to 2.7 2.3 to 3.6 1.4 to 1.95 2.3 to 3.6 1.4 to 1.95 1.4 to 1.95 1.4 to 1.95 2.3 to 2.7 1.4 1.4 1.65 to 1.95 1.65 to 1.95 2.3 to 2.7 3.0 to 3.6 3.0 to 3.6 1.4 1.4 1.65 to 1.95 1.65 to 1.95 2.3 to 2.7 3.0 to 3.6 3.0 to 3.6 2.0 2.0 2.0 2.0 2.0 2.0 1.0 2.0 2.0 2.0 2.0 2.0 2.0 1.0 5.0 5.0 4.5 4.8 3.5 3.5 3.0 5.5 5.5 5.0 5.2 4.0 4.0 3.5 CL = 10 pF CL = 30 pF RL = 500 Ω Unit ns ns Table 8: Capacitance Characteristics Test Condition Symbol CINB Parameter Input Capacitance Value TA = 25 °C VCCB VCCA (V) (V) Min. Typ. Max. -40 to 85 °C Min. Unit Max. open open 5 pF CO Output Capacitance 2.5 3.3 6 pF CPD Power Dissipation Capacitance 2.5 1.8 1.4 1.4 3.3 3.3 3.3 2.5 1.8 1.8 27 27 23 20 27 pF f=10MHz 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4 (per circuit) 5/11 ST1G3234 Figure 4: Test Circuit TEST SWITCH tPLH, tPHL Open CL = 10/30pF or equivalent (includes jig and probe capacitance) RL = R1 = 500Ω or equivalent RT = ZOUT of pulse generator (typically 50Ω) Table 9: Waveform Symbol Value VCC Symbol VIH 3.0 to 3.6V 2.3 to 2.7V 1.65 to 1.95V VCC VCC VCC VM 1.5V VCC/2 VCC/2 VX VOL +0.3V VOL +0.15V VOL +0.15V VY VOL -0.3V VOL -0.15V VOL -0.15V Figure 5: Waveform - Propagation Delay (f=1MHz; 50% duty cycle) 6/11 ST1G3234 Figure 6: Marking X = Marking Area; Marking Code 9537 7/11 ST1G3234 Flip-Chip 5 MECHANICAL DATA mm. mils DIM. MIN. TYP MAX. MIN. TYP. MAX. A 0.585 0.65 0.715 23.0 25.6 28.1 A1 0.21 0.25 0.29 8.3 9.8 11.4 a2 0.40 15.7 b 0.265 0.315 0.365 10.4 12.4 14.4 D 1.31 1.36 1.41 51.6 53.5 55.5 D1 E 0.866 0.97 E1 1.02 34.1 1.07 38.2 0.5 40.2 42.1 19.7 eD 0.383 0.433 0.483 15.1 17.0 19.0 eE 0.20 0.25 0.30 7.9 9.8 11.8 fD 0.247 9.7 fE 0.260 10.2 ccc 0.080 3.1 7224716F 8/11 ST1G3234 Tape & Reel Flip-Chip 5 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 178 C 12.8 D 20.2 N 49 13.2 MAX. 6.926 0.504 0.519 0.795 50 T 51 1.929 1.969 12.4 2.008 0.488 Ao 1.60 1.65 1.70 0.063 0.065 0.067 Bo 1.27 1.32 1.37 0.050 0.052 0.054 Ko 0.76 0.81 0.86 0.030 0.032 0.034 Po 3.9 4 4.1 0.153 0.157 0.161 P 3.9 4 4.1 0.153 0.157 0.161 9/11 ST1G3234 Table 10: Revision History Date Revision Description of Changes 14-Oct-2004 20-Dec-2004 1 2 11-Feb-2005 3 30-Mar-2005 09-May-2005 4 5 First Release. Revision on Table 3. Add Tape & Reel, Figures 2, 3, 5, 6, Tables 3, 5, 7 and Mechanical Data has been modified. Add Features ==> Max Data Rates. Table 7 and Table 8 have been updated.. 10/11 ST1G3234 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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