Key facts
- Brand
- IDT
- Model
- IDT74FCT257T
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-10
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IDT FAST CMOS IDT54/74FCT257T/AT/CT/DT Quad 2-Input Multiplexer Datasheet
The IDT FAST CMOS quad 2‑input multiplexer provides four independent data paths selectable via a common select input. It features low input and output leakage (<1 pA), true TTL compatibility, and high‑drive outputs (‑15 mA IOH, 48 mA IOL) suitable for bus‑oriented systems.
The device is offered in industrial (SOIC, QSOP) and military (CERDIP, LCC) packages, operates from 0.5 V to 7 V supply, and meets JEDEC and MIL‑STD‑883 specifications. Detailed electrical, power‑supply, and switching characteristics are provided, along with test circuits and ordering information.
IDT IDT74FCT257T specifications
| Input leakage | <1 pA (max) |
|---|---|
| Output high drive (IOH) | -15 mA |
| Output low drive (IOL) | 48 mA |
| Typical VOH | 3.3 V |
| Typical VOL | 0.3 V |
| Industrial temperature range | -40 °C to +85 °C |
| Military temperature range | -55 °C to +125 °C |
Source: IDT FAST CMOS IDT54/74FCT257T/AT/CT/DT Quad 2-Input Multiplexer Datasheet
All IDT IDT74FCT257T documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
Which packages are available for the IDT FAST CMOS multiplexer?
Industrial packages: SOIC and QSOP; Military packages: CERDIP and LCC.
From: IDT FAST CMOS IDT54/74FCT257T/AT/CT/DT Quad 2-Input Multiplexer Datasheet
What are the typical supply voltage limits for the device?
The device operates with a terminal voltage range of –0.5 V to +7 V.
From: IDT FAST CMOS IDT54/74FCT257T/AT/CT/DT Quad 2-Input Multiplexer Datasheet
What is the input leakage current of the IDT quad 2‑input multiplexers?
The devices have low input and output leakage of less than 1 µA (max.).
From: IDT IDT54/74FCT157T/AT/CT/DT IDT54/74FCT257T/AT/CT/DT IDT54/74FCT2257T/AT/CT handbook
What high‑drive output currents are specified for the FCT157T device?
The FCT157T provides high‑drive outputs of –15 mA (IOH) and 48 mA (IOL).
From: IDT IDT54/74FCT157T/AT/CT/DT IDT54/74FCT257T/AT/CT/DT IDT54/74FCT2257T/AT/CT handbook