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 tecnology. 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 sistems, 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 February 2001 1/10 74LVXC3245 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME QND 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 OUTPUT INPUT A= B L H H X INPUT Z OUTPUT Z B= A Z X=Don’t care; Z=High Impedance ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCCA Supply Voltage -0.5 to +7.0 V VCCB Supply Voltage -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 Rating are those value beyond which damage to the device may occour. Functional operation under these condition is not implied (*) 500mW: ≅ 65°C derated to 300mW by 10mW/°C: 65°C to 85°C 2/10 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 -40 to 85 V °C 0 to 10 ns/V VI VI/OA I/O Voltage VI/OB I/O Voltage Top dt/dv Operating Temperqture 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; DC SPECIFICATION FOR VCCA Test Condit ion Symbol V IHA VILA VOHA VOLA Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Min. 3.0 3.6 5.5 3.0 3.6 5.5 Typ. -40 to 85 °C Max. 2.0 2.0 2.0 Min. 2.0 2.0 2.0 0.8 0.8 0.8 V 0.8 0.8 0.8 3.0 3.0 IO=-100 µA 2.9 2.99 2.9 3.0 IO=-12 mA 2.56 2.85 2.46 3.0 3.0 IO=-24 mA 2.35 2.65 2.25 2.7 3.0 IO=-12 mA 2.3 2.5 2.2 2.7 4.5 IO=-24 mA 2.1 3.0 3.0 IO=100 µA 0.0 0.1 0.1 3.0 3.0 IO=24 mA 0.21 0.36 0.44 2.7 3.0 IO=12 mA 0.11 0.36 0.44 2.7 4.5 IO=24 mA 0.22 0.42 0.5 VI = VCC or GND VIA = VIHA or VILA VIB = VIHB or VILB V I/OA = VCCA or GND 2.3 Unit Max. 3.0 V V 2.0 V ± 0.1 ±1 µA ± 0.5 ±5 µA VIA = VCCA or GND VIB = VCCB or GND 5 50 µA Open VIA = VCCA or GND G= DIR = V CCA VIB = Open 5 50 µA 5.5 VIA = VCCA - 0.6V VIB = VCCB or GND 0.35 0.5 mA Input Leakage Current 3.6 5.5 IOZA High Impedance Output Leakage Current 3.6 5.5 ICCtA Quiescent Supply Current 3.6 5.5 ICCtAF Quiescent VCCA Supply Current as B Port Floats 3.6 ∆ICCtA Maximum Quiescent Supply Current / Input (An, DIR, G) 3.6 IIA TA = 25 °C VCCA VCCB (V) (V) 2.7 3.0 3.6 2.7 3.0 3.6 Value 3/10 74LVXC3245 DC SPECIFICATION FOR VCCB Test Condit ion Symbol V IHB VILB VOHB VOLB Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Value TA = 25 °C VCCA VCCB (V) (V) Min. Typ. -40 to 85 °C Max. Min. Max. 2.7 3.0 3.0 3.6 2.0 2.0 2.0 2.0 3.6 2.7 3.0 3.6 5.5 3.0 3.6 5.5 3.85 3.85 3.0 3.0 IO=-100 µA 2.9 3.0 2.9 3.0 3.0 IO=-12 mA 2.56 2.85 2.46 3.0 3.0 IO=-24 mA 2.35 2.65 2.25 3.0 4.5 IO=-24 mA 3.86 4.25 3.76 3.0 3.0 IO=100 µA 0.00 0.1 0.1 3.0 3.0 IO=24 mA 0.21 0.36 0.44 0.18 0.8 0.8 1.65 Unit V 0.8 0.8 1.65 V V V 3.0 4.5 IO=24 mA 0.36 0.44 Input Leakage Current 3.6 5.5 VI = VCCA or GND ± 0.1 ±1 µA IOZB High Impedance Output Leakage Current 3.6 5.5 VIA = VIHA or VILA V I/OB = VCCB or GND ± 0.5 ±5 µA ICCtB Quiescent Supply Current 3.6 5.5 VIA = VCCA or GND VIB = VCCB or GND 5 50 µA ∆ICCtB Maximum Quiescent Supply Current / Input 3.6 5.5 VIA = VCCA or GND VIB = VCCB - 2.1V 1.35 1.5 mA IIB DINAMIC SWITCHING CHARACTERISTICS Test Condit ion 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 3.3 3.3 3.3 5.5 5.5 5.5 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 -0.8 -40 to 85 °C Typ. Max. 1.0 -0.6 0.8 -0.5 1.5 1.2 2 0.8 Max. V V V V 2 0.8 Min. 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 4/10 74LVXC3245 AC ELECTRICAL CHARACTERISTICS Value Unit VCCB = 5 ± 0.5V Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ tPLH tPHL tPZL tPZH tPLZ tPHZ tOSLH tOSHL Parameter TA = 25 °C VCCB = 3 ± 0.3V -40 to 85 °C -40 to 85 °C -40 to 85 °C Min. Typ. (*) Max. Min. Max. Min. Typ. (**) Max. Min. Max. Propagation Delay Time An to Bn 1.0 4.8 8.0 1.0 8.5 1.0 5.5 8.5 1.0 9.0 1.0 3.9 6.5 1.0 7.0 1.0 5.2 8.0 1.0 8.5 Output Enable Time G to Bn 1.0 4.7 8.0 1.0 8.5 1.0 6.0 9.0 1.0 9.5 1.0 4.8 8.5 1.0 9.0 1.0 6.1 9.5 1.0 10.0 Output Disable Time G to Bn 1.0 4.0 8.0 1.0 8.5 1.0 6.3 9.5 1.0 10.0 1.0 3.8 7.5 1.0 8.0 1.0 4.5 8.0 1.0 8.5 Propagation Delay Time Bn to An 1.0 3.8 6.5 1.0 7.0 1.0 4.4 7.0 1.0 7.5 1.0 4.3 7.5 1.0 8.0 1.0 5.1 7.5 1.0 8.0 Output Enable Time G to An 1.0 5.9 9.5 1.0 10.0 1.0 6.4 10.0 1.0 10.5 1.0 5.4 9.0 1.0 9.5 1.0 5.8 9.0 1.0 9.5 Output Disable Time G to An 1.0 4.6 9.5 1.0 10.0 1.0 5.2 9.5 1.0 10.0 1.0 3.1 6.5 1.0 7.0 1.0 3.4 6.5 1.0 7.0 1.0 1.5 1.5 1.5 Output To Output Skew Time (note1, 2) 1.5 1.5 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 (*) Typical values at VCCA = 3.3V, VCCB = 5.0V (**) Typical values at VCCA = 3.3V, VCCB = 3.3V CAPACITANCE CHARACTERISTICS Test Condit ion Symbol Parameter C INA Input Capacitance CI/O Input/Output Capacitance Dynamic Low Level Quiet Output (note 1) A to B Dynamic Low Level Quiet Output (note 1) B to A C PD C PD VCCA VCCB (V) (V) Value TA = 25 °C Min. Typ. Max. -40 to 85 °C Min. Unit Max. open open 4.5 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 equivqlent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average current cqn be obtqined by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/8 (per circuit) 5/10 74LVXC3245 TEST CIRCUIT TEST tPLH, tPHL SWITCH 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) WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) 6/10 74LVXC3245 WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 7/10 74LVXC3245 SO-24 MECHANICAL DATA mm DIM. MIN. inch TYP. MAX. A MIN. TYP. MAX. 2.65 a1 0.10 0.104 0.20 a2 0.004 0.007 2.45 0.096 b 0.35 0.49 0.013 0.019 b1 0.23 0.32 0.009 0.012 C 0.50 0.020 c1 45 (typ.) D 15.20 15.60 0.598 0.614 E 10.00 10.65 0.393 0.420 e 1.27 0.05 e3 13.97 0.55 F 7.40 7.60 0.291 0.299 L 0.50 1.27 0.19 0.050 S 8 (max.) L s e3 b1 e a1 b A a2 C c1 E D 13 1 12 F 24 P013T 8/10 74LVXC3245 TSSOP24 MECHANICAL DATA mm DIM. MIN. inch TYP. MAX. A MIN. TYP. MAX. 1.1 0.433 A1 0.05 0.10 0.15 0.002 0.004 0.006 A2 0.85 0.9 0.95 0.335 0.354 0.374 b 0.19 0.30 0.0075 0.0118 c 0.09 0.2 0.0035 0.0079 D 7.7 7.8 7.9 0.303 0.307 0.311 E 6.25 6.4 6.5 0.246 0.252 0.256 E1 4.3 4.4 4.48 0.169 0.173 0.176 e 0.65 BSC 0.0256 BSC K 0o 4o 8o 0o 4o 8o L 0.50 0.60 0.70 0.020 0.024 0.028 A A2 A1 b K e L E c D E1 PIN 1 IDENTIFICATION 1 9/10 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. 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