Texas Instruments 54HC27
This device contains three independent 3-input NOR gates. Each gate performs the Boolean function Y = A + B + C in positive logic.FEATURES
● Buffered inputs● Wide operating voltage range: 2 V to 6 V
● Wide operating temperature range: -40°C to +85°C
● Supports fanout up to 10 LSTTL loads
● Significant power reduction compared to LSTTL logic ICs 2
APPLICATIONS
● Alarm / tamper detect circuit● S-R latch 3
DESCRIPTION
Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SN74HC27DR SOIC (14) 8.70 mm × 3.90 mm SN74HC27DBR SSOP (14) 6.50 mm × 5.30 mm SN74HC27NR PDIP (14) 19.30 mm × 6.40 mm SN74HC27NSR SO (14) 10.20 mm × 5.30 mm SN54HC27JR CDIP (14) 21.30 mm × 7.60 mm SN54HC27WR CFP (14) 9.20 mm × 6.29 mm SN54HC27FKR LCCC (20) 8.90 mm × 8.90 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 1A 1 1B 2 2A 3 2B 4 2C 5 2Y 6 GND 7 14 VCC 13 1C 12 1Y 11 3C 10 3B 9 3A 8 3Y Functional pinout An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers.