Document
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.)
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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 temperature
VCC VIN VOUT IIK IOK IOUT ICC PD Tstg
−0.5 to 7.0 −0.5 to 7.0 −0.5 to VCC + 0.5
−20 ±20 ±25 ±50 180 −65 to 150
V V V mA mA mA mA mW °C
Note:
Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook (“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test report and estimated failure rate, etc).
2 2008-05-01
Operating Ranges (Note)
TC74VHC20F/FN/FT/FK
Characteristics
Symbol
Rating
Unit
Supply voltage Input voltage Output voltage Operating temperature
Input rise and fall time
VCC VIN VOUT Topr
dt/dv
2.0 to 5.5 0 to 5.5 0 to VCC −40 to 85 0 to 100 (VCC = 3.3 ± 0.3 V) 0 to 20 (VCC = 5 ± 0.5 V)
V V V °C
ns/V
Note: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND.
Electrical Characteristics
DC Characteristics
Characteristics
Symbol
Test Condition
High-level input voltage
Low-level input voltage
VIH VIL
― ―
High-level output voltage
Low-level output voltage
Input leakage current Quiescent supply current
VOH
VIN = VIH or VIL
IOH = −50 μA IOH = −4 mA
IOH = −8 mA
IOL = 50 μA
VOL
VIN = VIH
IOL = 4 mA
IOL = 8 mA
IIN VIN = 5.5 V or GND
ICC VIN = VCC or GND
Ta = 25°C
VCC (V)
2.0
3.0 to 5.5
Min
1.50 VCC ×
0.7
Typ.
― ―
Max
― ―
Ta = −40 to 85°C
Min Max
1.50 VCC ×
0.7
― ―
2.0 3.0 ― to ― 5.5
― 0.50 ― 0.50
―
VCC × 0.3
―
VCC × 0.3
2.0 1.9
2.0
―
1.9
―
3.0 2.9
3.0
―
2.9
―
4.5 4.4
4.5
―
4.4
―
3.0 2.58 ―
― 2.48 ―
4.5 3.94 ―
― 3.80 ―
2.0 ― 0.0 0.1 ― 0.1
3.0 ― 0.0 0.1 ― 0.1
4.5 ― 0.0 0.1 ― 0.1
3.0 ―
― 0.36 ― 0.44
4.5 ―
― 0.36 ― 0.44
0 to 5.5
―
― ±0.1 ― ±1.0
Unit V V V
V μA
5.5 ―
― 2.0 ― 20.0 μA
3 2008-05-01
TC74VHC20F/FN/FT/FK
AC Characteristics (input: tr = tf = 3 ns)
Characteristics
Symbol
Propagation delay time
Input capacitance Power dissipation capacitance
tpLH tpHL
CIN CPD
Test Condition
VCC (V) CL (pF)
3.3 ± 0.3
15
50
―
15
5.0 ± 0.5
50
―
Ta = 25°C
Min Typ. Max ― 4.6 6.6 ― 7.1 10.1 ― 3.3 5.0 ― 4.8 7.0 ― 4 10
(Note) ― 19 ―
Ta = −40 to 85°C Min Max 1.0 8.0 1.0 11.5 1.0 6.0 1.0 8.0 ― 10
――
Unit
ns pF pF
Note: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD·VCC·fIN + ICC/2 (per gate)
Input Equivalent Circuit
INPUT
4 2008-05-01
Package Di.