74HC20 74HCT20 Dual 4-input NAND gate Rev. 5 27 March 2019 Product data sheet 1. General description The 74HC20 74HCT20 is a dual 4-input NAND 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 Complies with JEDEC standard JESD7A Low-power dissipation Input levels: For 74HC20: CMOS level For 74HCT20: TTL level ESD protection: HBM JESD22-A114F exceeds 2 000 V MM JESD22-A115-A exceeds 200 V Multiple package options Specified from -40 C to +80 C and from -40 C to +125 C. 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC20D -40 C to +125 C SO14 plastic small outline package 14 leads SOT108-1 body width 3.9 mm 74HCT20D 74HC20DB -40 C to +125 C SSOP14 plastic shrink small outline package 14 leads SOT337-1 body width 5.3 mm 74HCT20DB 74HC20PW -40 C to +125 C TSSOP14 plastic thin shrink small outline package 14 leads SOT402-1 body width 4.4 mm 4. Functional diagram 1A 1 1A 1B 1 2 1Y 1B 1C 6 1Y 2 4 6 1C 1D 4 5 1D 2A 5 9 2A 2B 9 10 2Y 2B 2C 8 2Y 10 12 8 2C 2D 12 13 2D 13 aaa-004014 aaa-004015 Fig. 1. Functional diagram Fig. 2. Logic symbolNexperia 74HC20 74HCT20 Dual 4-input NAND gate & 1 2 6 A 4 5 B & 9 Y 10 C 8 12 13 D aaa-004016 aaa-004017 Fig. 3. IEC Logic symbol Fig. 4. Logic diagram 5. Pinning information 5.1. Pinning 74HC20 74HCT20 1A 1 14 V CC 74HC20 74HCT20 1B 2 13 2D 1A 1 14 V 3 12 n.c. 2C CC 1B 2 13 2D 1C 4 11 n.c. n.c. 3 12 2C 1C 4 11 n.c. 1D 5 10 2B 1D 5 10 2B 1Y 6 9 2A 1Y 6 9 2A GND 7 8 2Y GND 7 8 2Y aaa-004018 aaa-004019 Fig. 5. Pin configuration SOT108-1 Fig. 6. Pin configuration SOT337-1 and SOT402-1 5.2. Pin description Table 2. Pin description Symbol Pin Description 1A, 1B, 1C, 1D 1, 2, 4, 5 data input n.c. 3, 11 not connected 1Y 6 data output GND 7 ground (0 V) 2Y 8 data output 2A, 2B, 2C, 2D 9, 10, 12, 13 data input V 14 supply voltage CC 74HC HCT20 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2019. All rights reserved Product data sheet Rev. 5 27 March 2019 2 / 12