SN74AHC1G14

Part: SN74AHC1G14DBVR — Texas Instruments

Type: Single Schmitt-Trigger Inverter Gate

Description: Single Schmitt-trigger inverter (Y = A̅) with 2–5.5 V supply, max tpd of 10 ns at 5 V, ±8 mA output drive at 5 V, and 10 μA max ICC.

Operating Conditions:

• Supply voltage: 2–5.5 V
• Operating temperature: -40 to 125 °C
• Input voltage: 0–5.5 V
• Recommended output current: ±4 mA at VCC = 3.3 V ± 0.3 V; ±8 mA at VCC = 5 V ± 0.5 V

Absolute Maximum Ratings:

• Max supply voltage: 7 V
• Max continuous output current: ±25 mA
• Max continuous current through VCC or GND: ±50 mA
• Max junction temperature: 150 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• Input thresholds at VCC = 4.5 V (TA = 25 °C): VT+ 1.75–3.15 V, VT- 1.35–2.75 V
• Hysteresis at VCC = 4.5 V (TA = 25 °C): 0.4–1.4 V
• VOH at VCC = 4.5 V, IOH = -8 mA: 3.94 V min (TA = 25 °C); 3.7 V min (-40 to 125 °C)
• VOL at VCC = 4.5 V, IOL = 8 mA: 0.36 V max (TA = 25 °C); 0.55 V max (-40 to 125 °C)
• Supply current ICC: 1 μA at TA = 25 °C, 10 μA max over -40 to 125 °C (VCC = 5.5 V, VI = VCC or GND)
• Input leakage: ±0.1 μA max at 25 °C; ±1 μA max over temperature
• Propagation delay at VCC = 5 V, CL = 15 pF: 5.5 ns typ, 8.6 ns max (25 °C); 11 ns max (-40 to 125 °C)
• Propagation delay at VCC = 3.3 V, CL = 15 pF: 8.3 ns typ, 12.8 ns max (25 °C)
• Input capacitance: 2 pF typ (VCC = 5 V); power dissipation capacitance Cpd: 9 pF typ (VCC = 5 V, f = 1 MHz)

Features:

• Operating range 2 V to 5.5 V
• Maximum tpd of 10 ns at 5 V
• Low power consumption, 10 μA max ICC
• ±8 mA output drive at 5 V
• Latch-up performance exceeds 250 mA per JESD 17
• Overvoltage-tolerant inputs and outputs up to 5.5 V at any valid VCC

Applications:

• Barcode scanners
• Cable solutions
• E-books
• Embedded PCs
• Field transmitters (temperature or pressure sensors)
• HVAC
• Network-attached storage
• Server motherboards and PSUs
• Software defined radios
• TVs (HDTV, LCD, digital)
• Wireless data access cards, headsets, keyboards, mice, and LAN cards

Package:

• DBV (SOT-23, 5 pin), 2.9 mm × 1.6 mm body
• DCK (SC-70, 5 pin), 2 mm × 1.25 mm body
• DRL (SOT-553, 5 pin), 1.6 mm × 1.2 mm body

• Operating range 2 V to 5.5 V
• Maximum tpd of 10 ns at 5 V
• Low power consumption, 10-μA max ICC
• ±8-mA output drive at 5 V
• Latch-up performance exceeds 250 mA per JESD 17

• Barcode Scanners
• Cable Solutions
• E-Books
• Embedded PCs
• Field Transmitter: Temperature or Pressure Sensors
• Fingerprint Biometrics
• HVAC: Heating, Ventilating, and Air Conditioning
• Network-Attached Storage (NAS)
• Sever Motherboard and PSU
• Software Defined Radios (SDR)
• TV: High Definition (HDTV), LCD, and Digital
• Video Communications Systems
• Wireless Data Access Cards, Headsets, Keyboards, Mice, and LAN Cards

Figure 4-2. DCK Package 5-Pin SC70 Top View

Figure 4-1. DBV Package 5-Pin SOT-23 Top View

Figure 4-3. DRL Package 5-Pin SOT Top View

Table 4-1. Pin Functions

• (1) Signal Types: I = Input, O = Output, I/O = Input or Output

over operating free-air temperature range (unless otherwise noted)

over operating free-air temperature range (unless otherwise noted) (1)

over operating free-air temperature range (unless otherwise noted) (1)

Physically interactive interface elements like push buttons or rotary knobs offer simple and easy ways to interact with an electronic system. Many of these physical interface elements often have issues with bouncing, or where the physical conductive contact can connect and disconnect multiple times during a button push or release. This bouncing can cause one or more faulty transient signals to be passed during this transitional period. These faulty signals can be observed in many common applications, for example, a television remote with bouncing error can adjust the TV channel multiple times despite the button being pushed only once. To mitigate these faulty signals, we can use a Schmitt-trigger, or a device with hysteresis, to remove these faulty signals. Hysteresis allows a device to remember its history, and in this case, the SN74AHC1G14 uses this memory to debounce the signal of the physical element, or filter the faulty transient signals and pass only the valid signal each time the element is used. In this example, we show a push-button signal passed through an SN74AHC1G14 that is debounced and inverted to the microprocessor for push detection.

• (1) For all available packages, see the orderable addendum at the end of the data sheet.
• (2) The package size (length × width) is a nominal value and includes pins, where applicable.
• (3) The body size (length x width) is a nominal value and does not include pins.