ST4G3235 4-bit dual supply bus buffer level translator with a side series resistor Features ■ High speed: tPD = 4.3ns (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 |IOHB| = IOLB = 4mA Min at VCCB = 1.65V; VCCA = 1.4 to 3.6V) Flip-Chip11 ■ Balanced propagation delays: tPLH ≅ tPHL Description ■ Power down protection on inputs and outputs ■ 26Ω series resistor on a side outputs ■ Operating voltage range: VCCA(Opr) = 1.4V to 3.6V VCCB(Opr) = 1.4V to 3.6V ■ 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) The ST4G3235 is a dual supply low voltage CMOS 4-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. ■ Latch-up performance exceeds 500mA (JESD 17) ■ ESD performance: HBM > 2000V (MIL STD 883 method 3015); MM > 200V ■ ROHS compliant for Flip-Chip package 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 and viceversa. All inputs are equipped with protection circuits against static discharge, giving them ESD immunity and transient excess voltage. Table 1. Device summary June 2007 Part number Package Packaging ST4G3235BJR Flip-Chip11 4000 parts per reel Rev 7 1/21 www.st.com 21 Contents ST4G3235 Contents 1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2/21 ST4G3235 Pin settings 1 Pin settings 1.1 Pin connection Figure 1. 1.2 Pin connection (top through view) Pin description Table 2. Pin description Pin N° Symbol Name and function A1 A4 Data input (VCCA referred) A3 A3 Data input (VCCA referred) A5 A2 Data output (VCCA referred) A7 A1 Data output (VCCA referred) C1 B4 Data output (VCCB referred) C3 B3 Data output (VCCB referred) C5 B2 Data input (VCCB referred) C7 B1 Data input (VCCB referred) B2 GND Ground (0V) B6 VCCA Positive supply voltage B4 VCCB Positivsoltage 3/21 Device summary 2 ST4G3235 Device summary Figure 2. Input equivalent circuit Figure 3. Logic diagram Table 3. Truth table Inputs Bn (VCCB Referred) Outputs An (VCCA Referred) L L H H Inputs An (VCCB Referred) Outputs Bn (VCCA Referred) L L H H n = 1..2 n = 3..4 4/21 ST4G3235 3 Maximum rating 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 4. Absolute maximum ratings Symbol Parameter VCCA Output supply voltage VCCB Input supply voltage Value Unit -0.5 to +4.6 V -0.5 to VCCA + 0.5 V VO DC output voltage (Power down mode: VCCA=VCCB=Gnd) -0.5 to +4.6 V VI DC Input Voltage (Power down mode: VCCA=VCCB=Gnd) -0.5 to +4.6 V VOA DC output voltage (A1, A2 Outputs) -0.5 to VCCA + 0.5 V VOB DC output voltage (B3, B4 Outputs) -0.5 to VCCA + 0.5 V VIA DC input voltage (A3, A4 Inputs) -0.5 to +4.6 V VIB DC input voltage (B1, B2 Inputs) -0.5 to +4.6 V IIK 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 400 mW -65 to +150 °C 260 °C Pd Power dissipation Tstg Storage temperature TL Lead temperature (10 sec) 5/21 Maximum rating 3.1 ST4G3235 Recommended operating conditions Table 5. Recommended operating conditions Symbol Parameter Unit VCCA Supply voltage 1.4 to 3.6 V VCCB Supply voltage 1.4 to 3.6 V VIB Input voltage (B1, B2) 0 to VCCB V VIA Input voltage (A3, A4) 0 to VCCA V VOB Output voltage (B3, B4) 0 to VCCB V VOA Output voltage (A1, A2) 0 to VCCA V Top Operating temperature -40 to 85 °C 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 dt/dv Input rise and fall time (1) 1. VI from 0.8V to 2.0V at VCC = 3.0V 6/21 Value ST4G3235 4 Electrical characteristics Electrical characteristics Table 6. DC Specification for VCCA Test condition Symbol VIHA VILA VOHA VOLA IIA Parameter High level input voltage (A3-A4) Low level input voltage (A3-A4) TA = 25 °C -40 to 85 °C VCCB VCCA (V)(1) (V)(1) Min. 1.4 0.65VCCA 0.65VCCA 1.8 0.65VCCA 0.65VCCA 2.5 1.6 1.6 3.3 2.0 2.0 1.4 to 3.6V 1.4 to 3.6V Typ. Max. Min. Unit Max. V 1.4 0.35VCCA 0.35VCCA 1.8 0.35VCCA 0.35VCCA 2.5 0.7 0.7 3.3 0.8 0.8 V 1.4 IO=-100µA 1.2 1.2 2.75 IO=-0.4mA 2.5 2.5 2.75 IO=-10mA 2.2 2.2 2.3 IO=-6mA 1.8 1.8 1.65 IO=-2mA 1.4 1.4 1.4 IO=-1mA 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 VIA=VCCA or GND ± 0.5 ±5 µA 1.4 2.7 VIA=3.6V or GND ± 0.5 ±5 µA High level 1.4 to output voltage 3.6V (A1-A2) Low level 1.4 to output voltage 3.6V (A1-A2) Input leakage current (A3-A4) Value V V 7/21 Electrical characteristics ST4G3235 Table 6. DC Specification for VCCA Test condition Symbol Parameter VCCB VCCA (1) (1) (V) IOFF ICCtA ∆ICCtA Power off leakage current 0 Quiescent 1.4 to supply current 3.6V Maximum quiescent supply current / Input (An) (V) Min. Typ. -40 to 85 °C Max. Min. Unit Max. 0 ± 1.0 ± 10 µA 1.4 to 3.6V VIA =VCCA or GND VIB =VCCB or GND 0.5 5 µA 0.75 mA 3.6 1.95 3.6 2.7 1. VCC range = 3.3±0.3; 2.5±0.2V; 1.8±0.15V 8/21 TA = 25 °C VIB=GND to 3.6V VOA=GND to 3.6V VIA=GND to 3.6V VOB=GND to 3.6V 2.7 1.95 Value VIA =VCCA - 0.6V VIA =VCCA or GND VIB =VCCB or GND ST4G3235 Electrical characteristics Table 7. DC Specification for VCCB Test condition Symbol Parameter VCCB VCCA (1) (1) (V) (V) TA = 25 °C Min. 1.4 VIHB High level input voltage (B1-B2) 1.8 2.5 Value 1.4 to 3.6V 3.3 Low level input voltage (B1-B2) 1.8 2.5 VOHB VOLB IIB Low level output voltage (B3B4) Input leakage current (B1B2) Min. 0.65VCCB 0.65VCCB 0.65VCCB 1.6 1.6 2.0 2.0 1.4 to 3.6V 3.3 High level output voltage (B3B4) Max. 0.65VCCB 1.4 VILB Typ. -40 to 85 °C Max. V 0.35VCCB 0.35VCCB 0.35VCCB 0.35VCCB 0.7 0.7 0.8 0.8 1.4 IO=-100µA 1.3 1.3 1.8 IO=-100µA 1.6 1.6 2.75 IO=-24mA 2.2 2.2 IO=-18mA 1.7 1.7 2.3 IO=-4mA 1.44 1.44 1.65 IO=-4mA 1.5 1.5 1.4 IO=-2mA 1.25 1.25 1.4 IO=100µA 0.1 0.1 1.8 IO=100µA 0.2 0.2 IO=24mA 0.55 0.55 IO=18mA 0.35 0.35 2.3 IO=4mA 0.39 0.39 1.65 IO=4mA 0.20 0.20 1.4 IO=2mA 0.15 0.15 2.75 1.4 to 3.6V 2.75 2.75 1.4 to 3.6V Unit V V V 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 9/21 Electrical characteristics ST4G3235 Table 7. DC Specification for VCCB Test condition Symbol Parameter VCCB VCCA (1) (1) (V) IOFF Power off leakage current ICCtB Quiescent supply current ∆ICCtB Maximum quiescent supply current / Input (Bn) (V) TA = 25 °C Min. Typ. -40 to 85 °C Max. Min. Unit Max. 0 VIB=GND to 3.6V VOA=GND to 3.6V VIA=GND to 3.6V VOB=GND to 3.6V ± 1.0 ± 10 µA 1.4 to 3.6V 1.4 to 3.6V VIA =VCCA or GND VIB =VCCB or GND 0.5 5 µA 2.7 3.6 1.95 3.6 0.75 mA 0 1.95 2.7 1. VCC range = 3.3±0.3; 2.5±0.2V; 1.8±0.15V 10/21 Value VIB =VCCB 0.6V VIB =VCCB or GND VIB =VCCA or GND ST4G3235 Electrical characteristics Table 8. Dynamic switching characteristics Test condition Symbol VOLPA VOLVA VOHVA VOLPB VOLVB VOHVB Parameter Dynamic low level Quiet An Output Dynamic low level Quiet An Output Dynamic high level Quiet An Output Dynamic low level Quiet Bn Output Dynamic low level Quiet Bn Output Dynamic high level Quiet Bn Output Value TA = 25 °C VCCB (V) VCCA (V) 1.4 1.8 0.2 1.4-1.8 2.5 0.25 1.8-2.5 3.3 0.35 1.4 1.8 1.4-1.8 2.5 1.8-2.5 3.3 1.4 1.8 1.6 1.4-1.8 2.5 2.1 1.8-2.5 3.3 2.7 1.4 1.8-2.5 0.2 1.8 2.5-3.3 0.25 2.5 3.3 0.6 1.4 1.8-2.5 1.8 2.5-3.3 2.5 3.3 1.4 1.8-2.5 1.2 1.8 2.5-3.3 1.4 2.5 3.3 1.9 Min. CL = 30pF VILB = 0V VIHB = VCCB CL = 30pF VILA = 0V VIHA = VCCA Typ. Max. -40 to 85 °C Min. Unit Max. V -0.2 -0.25 V -0.35 V V -0.2 -0.25 V -0.36 V 11/21 Electrical characteristics ST4G3235 Table 9. AC electrical characteristics Test condition Symbol tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL Parameter Propagation delay time Bn to An Propagation delay time Bn to An Propagation delay time An to Bn Propagation delay time An to Bn tOSLH tOSHL Output to output skew time (note1, 2) Note: 12/21 VCCB (V) VCCA (V) 2.3 to 3.6 Value -40 to 85 °C Unit Min. Max. 1.4 2.0 6.5 1.4 to 1.95 1.4 2.0 6.8 2.3 to 3.6 1.65 to 1.95 2.0 5.2 1.4 to 1.95 1.65 to 1.95 CL = 10 pF 2.0 5.6 1.4 to 1.95 2.3 to 2.7 2.0 4.6 1.4 to 1.95 3.0 to 3.6 2.0 4.3 2.3 to 2.7 3.0 to 3.6 1.0 3.6 2.3 to 3.6 1.4 2.0 7.5 1.4 to 1.95 1.4 2.0 7.5 2.3 to 3.6 1.65 to 1.95 2.0 6.5 CL = 30 pF 1.4 to 1.95 1.65 to 1.95 RL = 500 Ω 1.4 to 1.95 2.3 to 2.7 2.0 6.7 2.0 5.9 1.4 to 1.95 3.0 to 3.6 2.0 5.7 2.3 to 2.7 3.0 to 3.6 1.0 4.9 2.3 to 3.6 1.4 2.0 5.5 1.4 to 1.95 1.4 2.0 6.0 2.3 to 3.6 1.65 to 1.95 2.0 5.0 1.4 to 1.95 1.65 to 1.95 CL = 10 pF 2.0 5.0 1.4 to 1.95 2.3 to 2.7 2.0 4.6 1.4 to 1.95 3.0 to 3.6 2.0 3.9 2.3 to 2.7 3.0 to 3.6 1.0 3.0 2.3 to 3.6 1.4 2.0 7.0 1.4 to 1.95 1.4 2.0 7.5 2.3 to 3.6 1.65 to 1.95 2.0 6.0 CL = 30 pF 1.4 to 1.95 1.65 to 1.95 RL = 500 Ω 1.4 to 1.95 2.3 to 2.7 2.0 6.0 2.0 5.6 1.4 to 1.95 3.0 to 3.6 2.0 4.6 2.3 to 2.7 3.0 to 3.6 1.0 4.0 1.8 ± 0.15 2.5 ± 0.2 1.8 ± 0.15 3.3 ± 0.3 2.5 ± 0.2 3.3 ± 0.3 ns ns ns ns 0.5 CL = 30 pF RL = 500 Ω 0.5 ns 0.75 1 Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switching in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn| 2 Parameter guaranteed by design ST4G3235 Electrical characteristics Table 10. Capacitance characteristics Test condition Symbol Parameter CIN Input capacitance CO Output capacitance CPD Note: Power dissipation capacitance 1 VCCB (V) VCCA (V) open open Value TA = 25 °C -40 to 85 °C Unit Min. Typ. Max. Min. 1.8-2.5 2.5-3.3 6 pF 9 pF 2.5 3.3 50 1.8 3.3 28 1.4 2.5 1.4 1.8 15 3.3 1.8 28 f=10MHz Max. 22 pF 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) 13/21 Test circuit 5 ST4G3235 Test circuit Figure 4. Test circuit Table 11. 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) 14/21 ST4G3235 6 Waveforms Waveforms Table 12. Waveform symbol value VCC Symbol Figure 5. 3.0 to 3.6V 2.3 to 2.7V 1.65 to 1.95V VIH 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 Waveform - propagation delay (f=1MHz; 50% duty cycle) 15/21 Package mechanical data 7 ST4G3235 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® 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 16/21 ST4G3235 Package mechanical data Figure 6. Note: Marking E = Eco Level; Y = Assy Year; WW = Assy Week; X = Marking Area; Marking Code 9521 17/21 Package mechanical data ST4G3235 Table 13. Flip-Chip11 Mechical data Dim. mm 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 1.99 2.04 2.09 78.3 80.3 82.3 D1 E 1.5 1.36 E1 1.41 59.1 1.46 53.5 0.866 55.5 57.5 34.1 eD 0.2 0.25 0.30 7.9 9.8 11.8 eE 0.383 0.433 0.483 15.1 17.0 19.0 fD 0.270 10.6 fE 0.272 10.7 ccc 0.080 3.1 Figure 7. 18/21 inch Package dimension ST4G3235 Package mechanical data Table 14. Flip-Chip11 tape and reel information 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 2.29 2.34 2.39 0.090 0.092 0.094 Bo 1.65 1.70 1.75 0.065 0.067 0.069 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 Figure 8. Reel dimensions 19/21 Revision history 8 ST4G3235 Revision history Table 15. Revision history 20/21 Date Revision Changes 14-Oct-2004 1 First release. 26-Oct-2004 2 Mechanical Data has been updated. 11-Feb-2005 3 Add Tape & Reel and Figure 6. 18-Feb-2005 4 Table 1 has been updated from 4000 to 5000 parts per Reel. 30-Mar-2005 5 Add Features ==> Max Data Rates. 09-May-2005 6 Table 9 and Table 10 have been updated. 14-Jun-2007 7 Document reformatted, typo Figure 2 on page 3 ST4G3235 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. 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