Dual 4-Input NAND Gate - Toshiba
Description
TC74VHC20F/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHC20F, 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.
TC74VHC20F TC74VHC20FK
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
Weight SOP14-P-300-1.
27A VSSOP14-P-0030-0.
50
: 0.
18 g (typ.
) : 0.
02 g (typ.
)
© 2019
1
Toshiba Electronic Devices & Storage Corporation
Start of commercial production
1991-05
2019-01-31
Pin Assignment
IEC Logic Symbol
TC74VHC20F/FK
1A 1 1B 2 NC 3 1C 4 1D 5 1Y 6 GND 7
(top view)
14 VCC
13 2D
12 2C
11 NC ccC
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
A
B
C
D
L
X
X
X
X
L
X
X
X
X
L
X
X
X
X
L
H
H
H
H
X: Don’t care
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 temperature
VCC VIN VOUT IIK IOK IOUT...
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