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| ST1G3234 1-bit dual supply bus buffer level translator with A-side series resistor Features High speed: tPD = 4.4ns (Max.) at TA = 85C VCCB = 1.65V; VCCA = 3.0V Low power dissipation: ICCA = ICCB = 5A(Max.) at TA = 85C 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 = 1.4V to 3.6V Balanced propagation delays: tPLH tPHL Power down protection on inputs and outputs 26 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: 380Mbps (1.8V to 3.3V translation) 260Mbps (<1.8V to 3.3V translation) 260Mbps (translate to 2.5V) 210Mbps (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 Flip-Chip package Flip-Chip 5 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. All inputs are equipped with protection circuits against static discharge, giving them ESD immunity and transient excess voltage. Order codes Part number ST1G3234BJR Package Flip-Chip 5 Comments 4000 parts per reel August 2006 Rev 6 1/15 www.st.com 15 Contents ST1G3234 Contents 1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 1.2 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 3 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 5 6 7 8 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2/15 ST1G3234 Pin settings 1 1.1 Pin settings Pin connection Figure 1. Pin connection (top through view) 1.2 Pin description Table 1. Pin description Pin N A1 C1 B2 A3 C3 Symbol A1 B1 GND VCCA VCCB Name and function Data output (VCCA referred) Data input (VCCB referred) Ground (0V) Positive supply voltage Positive supply voltage 3/15 Device summary ST1G3234 2 Device summary Figure 2. Input equivalent circuit Figure 3. Logic diagram Table 2. Truth table Inputs B1 (VCCB Referred) L H Outputs A1 (VCCA Referred) L H 4/15 ST1G3234 Maximum rating 3 Maximum rating Stressing the device above the rating listed in the "Absolute Maximum Ratings" table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 3. Absolute maximum ratings Symbol VCCA VCCB VOA VIB VOA VIB IIK IOK IOA ICCA ICCB Pd Tstg TL Output supply voltage Input supply voltage DC output voltage (power down mode: VCCA=VCCB=Gnd) DC input voltage (power down mode: VCCA=VCCB=Gnd) DC output voltage DC input voltage DC input diode current DC output diode current DC output current DC VCCA or ground current DC VCCB or ground current Power dissipation Storage temperature Lead temperature (10 sec) Parameter Value -0.5 to +4.6 -0.5 to + 4.6 -0.5 to +4.6 -0.5 to +4.6 -0.5 to VCCA + 0.5 -0.5 to + 4.6 -20 -50 50 100 100 200 -65 to +150 260 Unit V V V V V V mA mA mA mA mA mW C C 5/15 Maximum rating ST1G3234 3.1 Recommended operating conditions Table 4. Recommended operating conditions Symbol VCCA VCCB VIB VOA Top Supply voltage Supply voltage Input voltage (B1) Output voltage (A1) Operating temperature VCCB = 3.0 to 3.6V dt/dv Input Rise and Fall Time (1) VCCB = 2.3 to 2.7V VCCB = 1.4 to 1.95V 1. VI from 0.8V to 2.0V at VCC = 3.0V Parameter Value 1.4 to 3.6 1.4 to 3.6 0 to VCCB 0 to VCCA -40 to 85 0 to 10 0 to 20 0 to 100 Unit V V V V C ns/V ns/V ns/V 6/15 ST1G3234 Electrical characteristics 4 Electrical characteristics Table 5. DC specification Test condition Symbol Parameter VCCB VCCA (V) (1) Value TA = 25 C Min 0.65VCCB Max -40 to 85 C Min 0.65VCCB 0.65VCCB 1.6 2.0 0.35VCCB 0.35VCCB 0.35VCCB 0.7 0.8 1.2 2.2 V 1.8 1.4 1.1 0.20 0.40 0.55 0.40 0.25 0.20 0.5 0.5 1.0 0.5 0.5 1.8 1.4 1.1 0.20 0.40 0.55 V 0.40 0.25 0.20 5 5 10 5 5 A A A A A V V Max Unit (V)(1) 1.4 VIHB High level input voltage 1.8 2.5 3.3 1.4 VILB Low level input voltage 1.8 2.5 3.3 1.4 2.75 VOHA High level output voltage 1.4 to 3.6V 2.3 1.65 1.4 1.4 2.75 VOLA Low level output 1.4 to voltage 3.6V 2.75 2.3 1.65 1.4 IIB Input leakage current Power OFF leakage current Quiescent supply current Quiescent supply current 2.7 1.4 0 3.6 2.7 0 IO=-100A IO=-10mA IO=-6mA IO=-2mA IO=-1mA IO=100A IO=1mA IO=10mA IO=6mA IO=2mA IO=1mA VIB =VCCB or GND VIB =3.6V or GND VIB=GND to 3.6V VOA=GND to 3.6V 1.4 to 3.6V 1.4 to 3.6V 0.65VCCB 1.6 2.0 0.35VCCB 0.7 0.8 1.2 2.2 IOFF ICCtB ICCtA 1.4 to 1.4 to VIB =VCCB or GND 3.6V 3.6V 1.4 to 1.4 to VIB =VCCB or GND 3.6V 3.6V 1. VCC range = 3.3 0.3; 2.5 0.2V; 1.8 0.15V 7/15 Electrical characteristics ST1G3234 Table 6. AC electrical characteristics Test condition Symbol Parameter VCCB (V) 2.3 to 3.6 1.4 to 1.95 2.3 to 3.6 tPLH tPHL Propagation delay time B1 to A1 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 tPLH tPHL Propagation delay time B1 to A1 1.4 to 1.95 1.4 to 1.95 1.4 to 1.95 2.3 to 2.7 VCCA (V) 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 CL = 30 pF RL = 500 CL = 10 pF Value -40 to 85 C Min 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 Max 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 ns ns Unit Table 7. Capacitance characteristics Test condition Symbol Parameter VCCB VCCA (V) (V) open open 2.5 2.5 1.8 CPD Power dissipation capacitance 1.4 1.4 3.3 3.3 3.3 3.3 2.5 1.8 1.8 f = 10MHz Value TA = 25 C Min Typ 5 6 27 27 23 20 27 pF Max -40 to 85 C Min Max pF pF Unit CINB CO Input capacitance Output capacitance Note: 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) 8/15 ST1G3234 Test circuit 5 Test circuit Figure 4. Test circuit Table 8. Test circuit Test tPLH, tPHL Switch Open CL = 10/30pF or equivalent (includes jig and probe capacitance) RL = R1 = 500 or equivalent RT = ZOUT of pulse generator (typically 50) 9/15 Waveforms ST1G3234 6 Waveforms Table 9. Waveform symbol value Symbol 3.0 to 3.6V VIH VM VX VY VCC 1.5V VOL +0.3V VOL -0.3V VCC 2.3 to 2.7V VCC VCC/2 VOL +0.15V VOL -0.15V 1.65 to 1.95V VCC VCC/2 VOL +0.15V VOL -0.15V Figure 5. Waveform - propagation delay (f = 1MHz; 50% duty cycle) 10/15 ST1G3234 Package mechanical data 7 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com Figure 6. Marking Note: X = Marking Area; Marking Code 9537 11/15 Package mechanical data ST1G3234 Flip-Chip 5 MECHANICAL DATA mm. DIM. MIN. A A1 a2 b D D1 E E1 eD eE fD fE ccc 0.383 0.20 0.97 0.265 1.31 0.585 0.21 TYP 0.65 0.25 0.40 0.315 1.36 0.866 1.02 0.5 0.433 0.25 0.247 0.260 0.080 0.483 0.30 15.1 7.9 1.07 38.2 0.365 1.41 10.4 51.6 MAX. 0.715 0.29 MIN. 23.0 8.3 TYP. 25.6 9.8 15.7 12.4 53.5 34.1 40.2 19.7 17.0 9.8 9.7 10.2 3.1 19.0 11.8 42.1 14.4 55.5 MAX. 28.1 11.4 mils 7224716F 12/15 ST1G3234 Package mechanical data Tape & Reel Flip-Chip 5 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 1.60 1.27 0.76 3.9 3.9 1.65 1.32 0.81 4 4 12.8 20.2 49 50 51 12.4 1.70 1.37 0.86 4.1 4.1 0.063 0.050 0.030 0.153 0.153 0.065 0.052 0.032 0.157 0.157 TYP MAX. 178 13.2 0.504 0.795 1.929 1.969 2.008 0.488 0.067 0.054 0.034 0.161 0.161 MIN. TYP. MAX. 6.926 0.519 inch 13/15 Revision history ST1G3234 8 Revision history Table 10. Revision history Date 14-Oct-2004 20-Dec-2004 11-Feb-2005 30-Mar-2005 09-May-2005 16-Aug-2006 Revision 1 2 3 4 5 6 First release. Revision on Table 3. Add Tape & Reel, Figures 2, 3, 5, 6, Table 3, 5, 7 and Mechanical Data has been modified. Add features ==> Max data rates. Table 7 and Table 8 have been updated. New template, updated test condition VOHA Table 5 Changes 14/15 ST1G3234 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. 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