Texas Instruments TPUL2T123/-Q1 Monostable Multivibrators
Texas Instruments TPUL2T123/-Q1 Monostable Multivibrators offer two independent, RC-configurable, retriggerable monostable multivibrators for 1.5V to 5.5V operation. The output pulse duration is set by selecting external resistance and capacitance values, with an approximate output pulse width of two × R × C.
The TPUL2T123/-Q1 devices feature three trigger inputs for rising-edge or falling-edge triggering, along with an asynchronous clear input that can stop an active output pulse. Schmitt-trigger architecture on all trigger inputs supports slow input transition rates and improves noise immunity. These devices are available in a wettable-flank QFN package, are RC configurable from 1µs to 860ms, and support TTL-compatible operation with a 4.5V to 5.5V supply. The devices also support single-supply voltage translation for selected up-translation and down-translation requirements.
The TI TPUL2T123/-Q1 is ideal for applications such as demodulating a digital Amplitude Shift Keying (ASK) signal, resetting a system for a fixed period of time, generating a positive fixed-width digital pulse, detecting rising or falling digital signal edges, and debouncing a switch.
The TPUL2T123-Q1 is AEC-Q100 qualified for automotive applications.
Features
- AEC-QI00 qualified for automotive applications (TPUL2T123-Q1):
- Device temperature grade 1: -40°C to +125°C
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
- Available in a wettable flank QFN package
- RC configurable from Ips to 860ms
- For pulses longer than 860ms, use TPUL2T323-QI
- 1% typical, 10% maximum pulse width variation
- Wide operating range from 1.5V to 5.5V
- Inputs accept voltages up to 5.5V
- TTL-compatible with 4.5V to 5.5V supply
- Schmitt-trigger architecture on all inputs
- Single-supply voltage translator (refer to Reduced Input Threshold Voltage):
- Up translation:
- 1.2V to 1.8V
- 1.5V to 2.5V
- 1.8V to 3.3V
- 3.3V to 5.0V
- Down translation:
- 5.0V, 3.3V, 2.5V, to 1.8V
- 5.0V, 3.3V to 2.5V
- 5.0V to 3.3V
Applications
- Demodulate a digital Amplitude Shift Keying (ASK) signal
- Reset a system for a fixed period of time
- Generate a positive fixed-width digital pulse
- Detect a digital signal rising edge
- Detect a digital signal falling edge
- Debounce a switch
Associated Multivibrators
Texas Instruments TPUL2T323/TPUL2T323-Q1 Monostable Multivibrators
Devices contain two extended-pulse-width RC-configurable retriggerable monostable multivibrators.
Datasheets
Block Diagram
