74LVX240 LOW VOLTAGE CMOS OCTAL BUS BUFFER (3-STATE INV.) WITH 5V TOLERANT INPUTS HIGH SPEED: t =4.7ns (TYP.) at V = 3.3V PD CC 5V TOLERANT INPUTS POWER-DOWN PROTECTION ON INPUTS INPUT VOLTAGE LEVEL: V = 0.8V, V = 2V at V =3V IL IH CC SOP TSSOP LOW POWER DISSIPATION: I = 4 A (MAX.) at T =25C CC A LOW NOISE: Table 1: Order Codes V = 0.3V (TYP.) at V =3.3V OLP CC SYMMETRICAL OUTPUT IMPEDANCE: PACKAGE T & R I = I = 4 mA (MIN) at V =3V OH OL CC SOP 74LVX240MTR BALANCED PROPAGATION DELAYS: TSSOP 74LVX240TTR t t PLH PHL OPERATING VOLTAGE RANGE: V (OPR) = 2V to 3.6V (1.2V Data Retention) G output enable governs four BUS BUFFERs CC PIN AND FUNCTION COMPATIBLE WITH Power down protection is provided on all inputs 74 SERIES 240 and 0 to 7V can be accepted on inputs with no regard to the supply voltage. IMPROVED LATCH-UP IMMUNITY This device can be used to interface 5V to 3V. It combines high speed performance with the true DESCRIPTION CMOS low power consumption. The 74LVX240 is a low voltage CMOS OCTAL All inputs and outputs are equipped with BUS BUFFER (3-STATE) fabricated with protection circuits against static discharge, giving sub-micron silicon gate and double-layer metal 2 them 2KV ESD immunity and transient excess wiring C MOS technology. It is ideal for low voltage. power, battery operated and low noise 3.3V applications. Figure 1: Pin Connection And IEC Logic Symbols Rev. 3 August 2004 1/12 Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s) 74LVX240 Figure 2: Input Equivalent Circuit Table 2: Pin Description PIN N SYMBOL NAME AND FUNCTION 11G Output Enable Input 2, 4, 6, 8 1A1 to 1A4 Data Inputs 9, 7, 5, 3 2Y1 to 2Y4 Data Outputs 11, 13, 15, 2A1 to 2A4 Data Inputs 17 18, 16, 14, 1Y1 to 1Y4 Data Outputs 12 19 2G Output Enable Input 10 GND Ground (0V) 20 V Positive Supply Voltage CC Table 3: Truth Table INPUTS OUTPUT G An Yn LL H LHL HX Z X :Dont Care Z : High Impedance Table 4: Absolute Maximum Ratings Symbol Parameter Value Unit V Supply Voltage -0.5 to +7.0 V CC V DC Input Voltage -0.5 to +7.0 V I V DC Output Voltage -0.5 to V + 0.5 V O CC I DC Input Diode Current - 20 mA IK I DC Output Diode Current 20 mA OK I DC Output Current 25 mA O I or I DC V or Ground Current 50 mA CC GND CC T Storage Temperature -65 to +150 C stg T Lead Temperature (10 sec) 300 C L Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied Table 5: Recommended Operating Conditions Symbol Parameter Value Unit V Supply Voltage (note 1) 2 to 3.6 V CC V Input Voltage 0 to 5.5 V I V Output Voltage 0 to V V O CC T Operating Temperature -55 to 125 C op Input Rise and Fall Time (note 2) (V = 3V) dt/dv 0 to 100 ns/V CC 1) Truth Table guaranteed: 1.2V to 3.6V 2) V from 0.8V to 2.0V IN 2/12 Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s)