74VHC125TTR STMicroelectronics

74VHC125 QUAD BUS BUFFERS (3-STATE) HIGH SPEED: t = 3.8ns (TYP.) at V = 5V PD CC LOW POWER DISSIPATION: I = 4 A (MAX.) at T =25C CC A HIGH NOISE IMMUNITY: V = V = 28% V (MIN.) NIH NIL CC POWER DOWN PROTECTION ON INPUTS SOP TSSOP SYMMETRICAL OUTPUT IMPEDANCE: I = I = 8mA (MIN) OH OL BALANCED PROPAGATION DELAYS: Table 1: Order Codes t t PLH PHL OPERATING VOLTAGE RANGE: PACKAGE T & R V (OPR) = 2V to 5.5V CC SOP 74VHC125MTR PIN AND FUNCTION COMPATIBLE WITH TSSOP 74VHC125TTR 74 SERIES 125 IMPROVED LATCH-UP IMMUNITY LOW NOISE: V = 0.8V (MAX.) Power down protection is provided on all inputs OLP and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be DESCRIPTION used to interface 5V to 3V. The 74VHC125 is an advanced high-speed All inputs and outputs are equipped with CMOS QUAD BUS BUFFERS 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. voltage. The device requires the 3-STATE control input G to be set high to place the output in to the high impedance state. Figure 1: Pin Connection And IEC Logic Symbols Rev. 7 November 2004 1/1274VHC125 Figure 2: Input Equivalent Circuit Table 2: Pin Description PIN N SYMBOL NAME AND FUNCTION 1, 4, 10, 13 1G to 4G Output Enable Inputs 2, 5, 9, 12 1A to 4A Data Inputs 3, 6, 8, 11 1Y to 4Y Data Outputs 7 GND Ground (0V) 14 V Positive Supply Voltage CC Table 3: Truth Table AG Y XH Z LLL HLH 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 2 to 5.5 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 1) (V = 3.3 0.3V) CC 0 to 100 dt/dv ns/V (V = 5.0 0.5V) 0 to 20 CC 1) V from 30% to 70% of V IN CC 2/12