DUAL 4-INPUT NAND GATE
Description
TC74VHC20F/FN/FT/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHC20F,TC74VHC20FN,TC74VHC20FT,TC74VHC20FK
Dual 4-Input NAND Gate
The TC74VHC20 is an advanced high speed CMOS 4-INPUT NAND GATE fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.
The internal circuit is composed of 3 stages including a buffer output, which provide high noise immunity and stable output.
An input protection circuit ensures that 0 to 5.
5 V can be applied to the input pins without regard to the supply voltage.
This device can be used to interface 5 V to 3 V systems and two supply systems such as battery back up.
This circuit prevents device destruction due to mismatched supply and input voltages.
Features
• High speed: tpd = 3.
3 ns (typ.
) at VCC = 5 V • Low power dissipation: ICC = 2 μA (max) at Ta = 25°C • High noise immunity: VNIH = VNIL = 28% VCC (min) • Power down protection is provided on all inputs.
• Balanced propagation delays: tpLH ≈ tpHL • Wide operating voltage range: VCC (opr) = 2 to 5.
5 V • Pin and function compatible with 74ALS20
Note: xxxFN (JEDEC SOP) is not available in Japan.
TC74VHC20F
TC74VHC20FN
TC74VHC20FT
TC74VHC20FK
Weight SOP14-P-300-1.
27A SOL14-P-150-1.
27 TSSOP14-P-0044-0.
65A VSSOP14-P-0030-0.
50
: 0.
18 g (typ.
) : 0.
12 g (typ.
) : 0.
06 g (typ.
) : 0.
02 g (typ.
)
1 2008-05-01
Pin Assignment
TC74VHC20F/FN/FT/FK
IEC Logic Symbol
1A 1 1B 2 NC 3 1C 4 1D 5 1Y 6 GND 7
(top view)
14 VCC 13 2D 12 2C 11 NC 10 2B 9 2A 8 2Y
1A (1) 1B (2) 1C (4) 1D (5) 2A (9) 2B (10) 2C (12) 2D (13)
&
(6) 1Y (8) 2Y
Truth Table
Inputs ABC LXX XLX XXL XXX HHH
X: Don’t care
D X X X L H
Output Y H H H H L
Absolute Maximum Ratings (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage tempe...
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