74HC240D,653 Nexperia

74HC240 74HCT240 Octal buffer/line driver 3-state inverting Rev. 6 2 September 2021 Product data sheet 1. General description The 74HC240 74HCT240 is an 8-bit inverting buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V . CC 2. Features and benefits Wide supply voltage range from 2.0 V to 6.0 V CMOS low power dissipation High noise immunity Latch-up performance exceeds 100 mA per JESD 78 Class II Level B Complies with JEDEC standards: JESD8C (2.7 V to 3.6 V) JESD7A (2.0 V to 6.0 V) Input levels: For 74HC240: CMOS level For 74HCT240: TTL level Inverting 3-state outputs ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V Multiple package options Specified from -40 C to +85 C and from -40 C to +125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC240D -40 C to +125 C SO20 plastic small outline package 20 leads SOT163-1 body width 7.5 mm 74HCT240D 74HC240PW -40 C to +125 C TSSOP20 plastic thin shrink small outline package 20 leads SOT360-1 body width 4.4 mm 74HCT240PW 74HC240BQ -40 C to +125 C DHVQFN20 plastic dual in-line compatible thermal enhanced SOT764-1 very thin quad flat package no leads 20 terminals 74HCT240BQ body 2.5 4.5 0.85 mmNexperia 74HC240 74HCT240 Octal buffer/line driver 3-state inverting 4. Functional diagram 2 1A0 1Y0 18 4 1A1 1Y1 16 6 1A2 1Y2 14 8 1A3 1Y3 12 1 EN 1 1OE 2 18 4 16 2 1A0 1Y0 18 2A0 2Y0 17 3 6 14 17 2A0 2Y0 3 8 12 15 2A1 2Y1 5 4 1A1 1Y1 16 15 2A1 2Y1 5 19 EN 2A2 13 2Y2 7 6 1Y2 14 1A2 13 2A2 2Y2 7 11 9 2A3 11 2Y3 9 8 12 1A3 1Y3 13 7 11 2Y3 9 2A3 5 15 2OE 19 3 1OE 17 1 19 2OE mgu779 mgu778 mgu780 Fig. 1. Logic symbol Fig. 2. IEC logic symbol Fig. 3. Functional diagram 74HC HCT240 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 6 2 September 2021 2 / 14