19
Mar
Ttl Voltage. A TTL signal is defined as a low logic level between 0 and 14 V and as a high logic level between 24 V and 5 V. The fast TTL is used to increase the transition from low-to-high. The graph provides a comparison of Input and Output IO logic switching levels for the CMOS TTL mixed CMOSTTL. Using differential signals the output fully complies to the RS422 standard.
Logic Threshold Voltage Levels. V IH High level Input Voltage. 08V for TTL devices worst case low input. This 400 mV difference provides a margin such that noise added to the signal does not cause errors. TTL output generally conforms to the RS 422 standard which specifies that the high state will be 5 VDC regardless of the supply voltage and the low state will be 0 Vdc. 1722015 Voltage Tolerance of TTL Gate Inputs TTL gates operate on a nominal power supply voltage of 5 volts - 025 volts.
The minimum input HIGH voltage V IH is 2 V or basically any voltage that is at least 2 V will be read in as a logic 1 HIGH to a TTL device.
From 475 to 55 VDC can be used to replace open collector output drivers or from 8 to 30 VDC. SN74LV1T00 is a low voltage CMOS gate logic that operates at a wider voltage range allowing generations of desired output levels to connect to controllers or processors. Another important advantage TTL has over CMOS is its ruggedness. 08V for TTL devices worst case low input. V IL MAX Maximum low level input voltage ie. You will also notice that there is cushion of 07 V between the output of one device and the input of another.