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This device contains three independent 3-input NOR gates. Each gate performs the Boolean function Y = A + B + C in positive logic. 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.
• 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
This device contains three independent 3-input NOR gates. Each gate performs the Boolean function Y = A + B + C in positive logic.
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 × 6.4.
54HC27 - STMicroelectronics
The M54HCxxx and M54HCTxxx series is composed of CMOS functions specifically designed to meet the radiation requirements.
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