74HC27 74HCT27 Triple 3-input NOR gate Rev. 6 10 September 2020 Product data sheet 1. General description The 74HC27 74HCT27 is a triple 3-input NOR gate. 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 74HC27: CMOS level For 74HCT27: TTL level 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 74HC27D -40 C to +125 C SO14 plastic small outline package 14 leads body width 3.9 mm SOT108-1 74HCT27D 74HC27PW -40 C to +125 C TSSOP14 plastic thin shrink small outline package 14 leads SOT402-1 body width 4.4 mm 74HCT27PW 74HC27BQ -40 C to +125 C DHVQFN14 plastic dual in-line compatible thermal enhanced SOT762-1 very thin quad flat package no leads 14 terminals 74HCT27BQ body 2.5 3 0.85 mmNexperia 74HC27 74HCT27 Triple 3-input NOR gate 4. Functional diagram 1 1 2 12 1 1A 13 2 1B 1Y 12 13 1C 3 1 3 2A 4 6 4 2B 2Y 6 5 5 2C A 9 3A 9 1 10 8 3B 3Y 10 8 Y B 11 3C 11 C mna936 mna935 mna937 Fig. 1. Logic symbol Fig. 2. IEC logic symbol Fig. 3. Logic diagram (one gate) 5. Pinning information 5.1. Pinning 74HC27 74HCT27 terminal 1 index area 1B 2 13 1C 74HC27 74HCT27 2A 3 12 1Y 2B 4 11 3C 1A 1 14 V CC 2C 5 (1) 10 3B GND 1B 2 13 1C 6 9 2Y 3A 2A 3 12 1Y 2B 4 11 3C aaa-007685 2C 5 10 3B 2Y 6 9 3A Transparent top view GND 7 8 3Y (1) This is not a ground pin. There is no electrical or mechanical requirement to solder the pad. In case 001aag759 soldered, the solder land should remain floating or connected to GND. Fig. 4. Pin configuration SOT108-1 (SO14) and SOT402-1 (TSSOP14) Fig. 5. Pin configuration SOT762-1 (DHVQFN14) 5.2. Pin description Table 2. Pin description Symbol Pin Description 1A, 2A, 3A 1, 3, 9 data input 1B, 2B, 3B 2, 4, 10 data input 1C, 2C, 3C 13, 5, 11 data input 1Y, 2Y, 3Y 12, 6, 8 data output GND 7 ground (0 V) V 14 supply voltage CC 74HC HCT27 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2020. All rights reserved Product data sheet Rev. 6 10 September 2020 2 / 12 GND 7 1 1A 3Y 8 14 V CC