74LVXC3245 OCTAL DUAL SUPPLY BUS TRANSCEIVER ■ ■ ■ ■ ■ ■ ■ HIGH SPEED : tPD = 8ns (MAX.) at TA=25°C VCCA = 3.3V, VCCB = 5.0V LOW POWER DISSIPATION: ICCA = ICCB = 5µA(MAX.) at TA=25°C LOW NOISE: VOLP =0.3V (TYP.) at VCCA=3.3V SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCCA(OPR) =2.7V to 3.6V (1.2V Data Retention) VCCB(OPR) =2.7V to 5.5V (1.2V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES C3245 IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74LVXC3245 is a dual supply 8 bit configurable low voltage CMOS OCTAL BUS TRANSCEIVER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. Designed for use as an interface between a 3.3V bus and a 3.3V to 5V bus in a mixed 3.3V/5V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation. SOP TSSOP ORDER CODES PACKAGE TUBE T&R SOP TSSOP 74LVXC3245M 74LVXC3245MTR 74LVXC3245TTR This IC is intended for two-way asynchronous communication between data buses and the direction of data transmission is determined by DIR input. The enable input G 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 5V bus. All inputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/12 74LVXC3245 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 2 3, 4, 5, 6, 7, 8, 9, 10 21, 20, 19, 18, 17, 16, 15, 14 22 11, 12, 13 23 1 DIR A1 to A8 Directional Control Data Inputs/Outputs B1 to B8 Data Inputs/Outputs G GND NC VCCA Output Enable Input Ground (0V) Not Connected Positive Supply Voltage 24 VCCB Positive Supply Voltage TRUTH TABLE INPUTS FUNCTION OUTPUT G DIR A BUS B BUS L L H L H X OUTPUT INPUT Z INPUT OUTPUT Z A= B B= A Z X : Don’t Care Z : High Impedance ABSOLUTE MAXIMUM RATINGS Symbol Parameter VCCA Supply Voltage VCCB Supply Voltage Value Unit -0.5 to +7.0 V -0.5 to +7.0 V DC Input Voltage -0.5 to VCCA + 0.5 V VI/OA DC I/O Voltage V VI/OB DC I/O Voltage -0.5 to VCCA + 0.5 -0.5 to VCCB + 0.5 VI V IIK DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 50 mA IOA DC Output Current ± 50 mA IOB DC Output Current ± 50 mA ICCA DC VCC or Ground Current DC VCC or Ground Current ± 200 mA ± 100 mA ICCB Pd Power Dissipation Tstg Storage Temperature TL Lead Temperature (10 sec) 180 mW -65 to +150 °C 300 °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied 2/12 74LVXC3245 RECOMMENDED OPERATING CONDITIONS Symbol Parameter Value Unit 2.7 to 3.6 V VCCA Supply Voltage (note 1) VCCB Supply Voltage (note 1) 2.7 to 5.5 V Input Voltage 0 to VCCA 0 to VCCA V 0 to VCCB -55 to 125 V °C 0 to 10 ns/V VI VI/OA I/O Voltage VI/OB I/O Voltage Top dt/dv Operating Temperature Input Rise and Fall Time (note 2) V 1) VIN from 30% to 70% of VCC 2) VCCA = 2.7 to 3.6V; VCCB = 2.7 to 5.5V; 3/12 74LVXC3245 DC SPECIFICATIONS FOR VCCA Test Condition Symbol VIHA VILA VOHA V OLA Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Min. Typ. -40 to 85 °C -55 to 125°C Unit Max. 2.0 2.0 2.0 Min. Max. 2.0 2.0 2.0 Min. 2.7 3.0 3.6 2.7 3.0 3.6 5.5 3.0 3.0 3.6 3.6 5.5 3.0 3.0 IO=-100 µA 2.9 2.99 2.9 2.9 3.0 3.0 IO=-12 mA 2.56 2.85 2.46 2.46 3.0 3.0 IO=-24 mA 2.35 2.65 2.25 2.25 2.7 3.0 IO=-12 mA 2.3 2.5 2.2 2.2 2.1 Max. 2.0 2.0 2.0 V 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 V V 2.7 4.5 IO=-24 mA 3.0 3.0 IO=100 µA 0.0 0.1 0.1 0.1 3.0 3.0 IO=24 mA 0.21 0.36 0.44 0.44 2.7 3.0 IO=12 mA 0.11 0.36 0.44 0.44 2.7 4.5 IO=24 mA 0.22 0.42 0.5 0.5 3.6 5.5 VI = VCC or GND ± 0.1 ±1 ±1 µA 3.6 5.5 VIA = VIHA or V ILA VIB = VIHB or V ILB VI/OA = VCCA or GND ± 0.5 ±5 ±5 µA VIA = VCCA or GND VIB = VCCB or GND VIA = VCCA or GND G= DIR = VCCA V IB = Open 5 50 50 µA 5 50 50 µA VIA = VCCA - 0.6V VIB = VCCB or GND 0.35 0.5 0.5 mA IOZA ICCtA Quiescent Supply Current 3.6 5.5 ICCtAF Quiescent VCCA Supply Current as B Port Floats 3.6 Open ∆ICCtA Maximum Quiescent Supply Current / Input (An, DIR, G) 3.6 5.5 4/12 TA = 25 °C VCCA VCCB (V) (V) Input Leakage Current High Impedance Output Leakage Current IIA Value 2.3 2.0 2.0 V 74LVXC3245 DC SPECIFICATIONS FOR VCCB Test Condition Symbol VIHB VILB VOHB V OLB Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage TA = 25 °C VCCA VCCB (V) (V) Min. Typ. -40 to 85 °C -55 to 125°C Unit Max. Max. Max. 3.0 3.6 3.6 5.5 3.0 3.0 IO=-100 µA 2.9 3.0 2.9 2.9 3.0 3.0 IO=-12 mA 2.56 2.85 2.46 2.46 3.0 3.0 IO=-24 mA 2.35 2.65 2.25 2.25 3.0 4.5 IO=-24 mA 3.86 4.25 3.76 3.76 3.0 3.0 IO=100 µA 0.00 0.1 0.1 0.1 3.0 3.0 IO=24 mA 0.21 0.36 0.44 0.44 3.0 4.5 IO=24 mA 0.18 0.36 0.44 0.44 3.6 5.5 VI = V CCA or GND ± 0.1 ±1 ±1 µA 3.6 5.5 VIA = VIHA or V ILA VI/OB = VCCB or GND VIA = VCCA or GND VIB = VCCB or GND VIA = VCCA or GND VIB = VCCB - 2.1V ± 0.5 ±5 ±5 µA 5 50 50 µA 1.35 1.5 1.5 mA ICCtB Quiescent Supply Current 3.6 5.5 ∆ICCtB Maximum Quiescent Supply Current / Input 3.6 5.5 2.0 2.0 3.85 Min. 3.0 3.6 5.5 3.0 IOZB 2.0 2.0 3.85 Min. 2.7 3.0 3.6 2.7 Input Leakage Current High Impedance Output Leakage Current IIB Value 2.0 2.0 3.85 V 0.8 0.8 0.8 0.8 1.65 0.8 1.65 0.8 1.65 V V V 5/12 74LVXC3245 DINAMIC SWITCHING CHARACTERISTICS Test Condition Symbol VOLPA VOLPB VIHDA VILDA VIHDB VILDB Parameter Dynamic Low Level Quiet Output (note 1, 2) Dynamic Low Level Quiet Output (note 1, 2) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) VCCA VCCB (V) (V) 3.3 5.5 3.3 5.5 3.3 5.5 3.3 5.5 3.3 5.5 3.3 5.5 3.3 5.5 3.3 5.5 Value TA = 25 °C Min. -1.2 Typ. Max. 1.0 1.5 Max. Min. Max. 1.2 V -0.5 2 0.8 V V 2 0.8 Min. V -0.6 0.8 -0.8 -40 to 85 °C -55 to 125°C Unit V V 1) Worst case package 2) Max number of output defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND 3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3V to threshold (VILD). 0V to threshold (VIHD) f = 1MHz 6/12 74LVXC3245 AC ELECTRICAL CHARACTERISTICS (CL = 50pF, Input tr = tf = 3ns) Value (3) Test Condition Symbol Parameter tPLH Propagation Delay Time (An to Bn) tPHL Propagation Delay Time (An to Bn) tPZL Output Enable Time (G to Bn) tPZH Output Enable Time (G to Bn) tPLZ Output Disable Time (G to Bn) tPHZ Output Disable Time (G to Bn) tPLH Propagation Delay Time (Bn to An) tPHL Propagation Delay Time (Bn to An) tPZL Output Enable Time (G to An) tPZH Output Enable Time (G to An) tPLZ Output Disable Time (G to An) tPHZ Output Disable Time (G to An) tOSLH tOSHL Output To Output Skew Time (note1, 2) VCCB (V) TA = 25°C -40 to 85°C -55 to 125°C Min. Typ. Max. Min. Max. Min. Max. 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 5.5 4.8 5.2 3.9 6.0 4.7 6.1 4.8 6.3 4.0 4.5 8.5 8.0 8.0 6.5 9.0 8.0 9.5 8.5 9.5 8.0 8.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 9.0 8.5 8.5 7.0 9.5 8.5 10.0 9.0 10.0 8.5 8.5 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 9.5 9. 9.0 7.5 9.5 8.5 10.5 9.5 10.5 8.5 8.5 1.0 3.8 7.5 1.0 8.0 1.0 8.5 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 4.4 3.8 5.1 4.3 6.4 5.9 5.8 5.4 7.0 6.5 7.5 7.5 10.0 9.5 9.0 9.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 7.5 7.0 8.0 8.0 10.5 10.0 9.5 9.5 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 7.5 7.5 8.5 8.5 10.5 10.5 9.5 9.5 3.0(*) 5.0(**) 3.0(*) 5.0(**) 3.0(*) 5.0(**) 1.0 1.0 1.0 1.0 5.2 4.6 3.4 3.1 0.5 0.5 9.5 9.5 6.5 6.5 1.0 1.0 1.0 1.0 1.0 1.0 10.0 10.0 7.0 7.0 1.5 1.5 1.0 1.0 1.0 1.0 10.5 10.5 7.5 7.5 1.5 1.5 Unit ns ns ns ns ns ns ns 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 3) Typical values referred at VCCA = 3.3V, VCCB = 5.0V or VCCA = 3.3V, VCCB = 3.3V (*) Voltage Range is 3.0V ± 0.3 (**) Voltage Range is 5.0V ± 0.5 7/12 74LVXC3245 CAPACITIVE CHARACTERISTICS Test Condition Symbol CINA C I/O C PD C PD Parameter Input Capacitance Input/Output Capacitance Dynamic Low Level Quiet Output (note 1) A to B Dynamic Low Level Quiet Output (note 1) B to A VCCA VCCB (V) (V) open open Value TA = 25 °C Min. -40 to 85 °C -55 to 125°C Unit Typ. Max. 4.5 10 Min. Max. Min. 10 Max. 10 V 3.3 5.0 10 V 3.3 5.0 55 V 3.3 5.0 40 V 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/8 (per circuit) TEST CIRCUIT TEST SWITCH tPLH, tPHL Open tPZLH, tPLZ 2V CC tPZH, tPHZ Open C L = 50pF or equivalent (includes jig and probe capacitance) R L = R1 = 500Ω or equivalent R T = ZOUT of pulse generator (typically 50Ω) 8/12 74LVXC3245 WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 9/12 74LVXC3245 SO-24 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 2.65 a1 0.1 0.104 0.2 a2 0.004 0.008 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.012 C 0.5 0.020 c1 45° (typ.) D 15.20 15.60 0.598 0.614 E 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 13.97 0.550 F 7.40 7.60 0.291 0.300 L 0.50 1.27 0.020 0.050 S 8° (max.) L s e3 b1 e a1 b A a2 C c1 E D 13 1 12 F 24 PO13T 10/12 74LVXC3245 TSSOP24 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 1.1 A1 0.05 0.15 A2 0.043 0.002 0.006 0.9 0.035 b 0.19 0.30 0.0075 0.0118 c 0.09 0.20 0.0035 0.0079 D 7.7 7.9 0.303 0.311 E 6.25 6.5 0.246 0.256 E1 4.3 4.5 0.169 0.177 e 0.65 BSC 0.0256 BSC K 0° 8° 0° 8° L 0.50 0.70 0.020 0.028 A A2 A1 b K e L E c D E1 PIN 1 IDENTIFICATION 1 7047476A 11/12 74LVXC3245 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 infringe ment of patents or other righ ts 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. 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