74VHCV240FT,74VHCV244FT CMOS Digital Integrated Circuits Silicon Monolithic 74VHCV240FT,74VHCV244FT74VHCV240FT,74VHCV244FT74VHCV240FT,74VHCV244FT74VHCV240FT,74VHCV244FT 1. 1. Functional DescriptionFunctional Description 1. 1. Functional DescriptionFunctional Description Octal Schmitt Bus Buffer 74VHCV240FT: Inverted, 3-State Outputs 74VHCV244FT: Non-Inverted, 3-State Outputs 2. 2. 2. 2. GeneralGeneralGeneralGeneral The 74VHCV240FT and 74VHCV244FT are advanced high speed CMOS OCTAL BUS BUFFERs fabricated with silicon gate C2MOS technology. They achieve the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The 74VHCV240FT is an inverting 3-state buffer having two active-low output enables. The 74VHCV244FT is a non-inverting 3-state buffer, and has two active-low output enables. These devices are designed to be used with 3-state memory address drivers, etc. An input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5 V to 3 V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages. 3. 3. FeaturesFeatures 3. 3. FeaturesFeatures (1) AEC-Q100 (Rev. H) (Note 1) (2) Wide operating temperature range: T = -40 to 125 opr (3) High speed: t = 3.9 ns (typ.) at V = 5.0 V pd CC (4) Low power dissipation: I = 2.0 A (max) at T = 25 CC a (5) Wide operating voltage range: V = 1.8 V to 5.5 V CC(opr) (6) Output current: I /I = 16 mA (min)(V = 4.5 V) OH OL CC (7) Power-down protection provided on all inputs. (8) Pin and function compatible with the 74 series (74AC/HC/AHC/LV etc.) 240 or 244 type. Note 1: This device is compliant with the reliability requirements of AEC-Q100. For details, contact your Toshiba sales representative. 4. 4. 4. 4. PackagingPackagingPackagingPackaging TSSOP20B Start of commercial production 2014-07 2016 Toshiba Corporation 2016-08-04 1 Rev.2.074VHCV240FT,74VHCV244FT 5. 5. 5. 5. Pin AssignmentPin AssignmentPin AssignmentPin Assignment 74VHCV240FT 74VHCV244FT 6. 6. 6. 6. MarkingMarkingMarkingMarking 74VHCV240FT 74VHCV244FT 7. 7. 7. 7. Truth TableTruth TableTruth TableTruth Table Input G Input An Output Yn Output Yn L L L H L H H L H X Z Z X: Don t care Z: High impedance Yn: 74VHCV244FT Yn: 74VHCV240FT 2016 Toshiba Corporation 2016-08-04 2 Rev.2.0