74AHC1

Part: 74AHC1G14; 74AHCT1G14 — Nexperia

Type: Inverting Schmitt trigger

Description: Single inverters with Schmitt-trigger inputs, featuring overvoltage tolerant inputs to 5.5 V for mixed voltage environments. The 74AHC1G14 has CMOS input switching levels and a 2.0 V to 5.5 V supply range, while the 74AHCT1G14 has TTL input switching levels and a 4.5 V to 5.5 V supply range.

Operating Conditions:

• Supply voltage: 2.0 V to 5.5 V (74AHC1G14); 4.5 V to 5.5 V (74AHCT1G14)
• Operating temperature: -40 °C to +125 °C
• Input voltage: 0 V to 5.5 V

Absolute Maximum Ratings:

• Max supply voltage: +7.0 V
• Max continuous current: ±25 mA (output current)
• Max junction/storage temperature: +150 °C

Key Specs:

• Input leakage current (II): 0.1 μA (max, at 25 °C, VI = 5.5 V or GND, VCC = 0 V to 5.5 V)
• Supply current (ICC): 1.0 μA (max, at 25 °C, VI = VCC or GND, IO = 0 A, VCC = 5.5 V)
• Input capacitance (CI): 1.5 pF (typ, at 25 °C)
• 74AHC1G14 positive-going threshold voltage (VT+): 2.2 V (max, at VCC = 3.0 V, -40 °C to +125 °C)
• 74AHCT1G14 positive-going threshold voltage (VT+): 2.0 V (max, at VCC = 4.5 V, -40 °C to +125 °C)
• 74AHC1G14 hysteresis voltage (VH): 0.25 V (min, at VCC = 3.0 V, -40 °C to +125 °C)
• 74AHCT1G14 hysteresis voltage (VH): 0.35 V (min, at VCC = 4.5 V, -40 °C to +125 °C)
• 74AHC1G14 propagation delay (tpd): 16.5 ns (max, at VCC = 3.0 V to 3.6 V, CL = 15 pF, -40 °C to +125 °C)
• 74AHCT1G14 propagation delay (tpd): 9.0 ns (max, at VCC = 4.5 V to 5.5 V, CL = 15 pF, -40 °C to +125 °C)
• Power dissipation capacitance (CPD): 12 pF (typ, 74AHC1G14); 13 pF (typ, 74AHCT1G14)

Features:

• Wide supply voltage range from 2.0 V to 5.5 V
• Overvoltage tolerant inputs to 5.5 V
• CMOS low power dissipation
• Symmetrical output impedance
• High noise immunity
• Latch-up performance exceeds 100 mA per JESD78 Class II Level A
• ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V
• Specified from -40 °C to +125 °C

Applications:

• Wave and pulse shapers
• Astable multivibrators
• Monostable multivibrators

Package:

• TSSOP5 (SOT353-1)
• SC-74A (SOT753)
• XSON5 (SOT8065-1)

• Wide supply voltage range from 2.0 V to 5.5 V
• Overvoltage tolerant inputs to 5.5 V
• CMOS low power dissipation
• Symmetrical output impedance
• High noise immunity
• Latch-up performance exceesds 100 mA per JESD78 Class II Level A
• ESD protection:
• HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
• CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
• Specified from -40 °C to +125 °C

• Wave and pulse shapers
• Astable multivibrators
• Monostable multivibrators

Table 3. Pin description

Inverting Schmitt trigger

Voltages are referenced to GND (ground = 0 V).

Inverting Schmitt trigger

The slow input rise and fall times cause additional power dissipation, which can be calculated using the following formula:

Padd = f i × (t r × ΔI CC(AV) + t f × ΔI CC(AV) ) × V CC where:

• Padd = additional power dissipation (μW);
• fi = input frequency (MHz);
• tr = input rise time (ns); 10 % to 90 %;
• t f = input fall time (ns); 90 % to 10 %;
• ΔICC(AV) = average additional supply current (μA).

Average additional ICC differs with positive or negative input transitions, as shown in Fig. 13 and Fig. 14.

For 74AHC1G14 and 74AHCT1G14 used in relaxation oscillator circuit, see Fig. 15.

Fig. 17. Package outline SOT353-1 (TSSOP5)