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The \x92FCT138T devices are 1-of-8 decoders. These devices accept three binary weighted inputs (A0, A1, A2) and, when enabled, provide eight mutually exclusive active-low outputs (O\0\x96O\7). The \x92FCT138T devices feature three enable inputs: two active low (E\1, E\2) and one active high (E3 ).
All outputs are high unless E\1 and E\2 are low and E3 is high. This multiple-enable function allows easy parallel expansion of the device to a 1-of-32 (five lines to 32 lines) decoder with just four \x92FCT138T devices and one inverter.
These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
| ? |
|---|
| Function |
| Technology Family |
| VCC (Min) (V) |
| VCC (Max) (V) |
| Channels (#) |
| Voltage (Nom) (V) |
| F @ Nom Voltage (Max) (Mhz) |
| ICC @ Nom Voltage (Max) (mA) |
| tpd @ Nom Voltage (Max) (ns) |
| Configuration |
| Type |
| IOL (Max) (mA) |
| IOH (Max) (mA) |
| Rating |
| Operating Temperature Range (C) |
| Package Group |
| Package Size: mm2:W x L (PKG) |
| Bits (#) |
| Digital input leakage (Max) (uA) |
| ESD Charged Device Model (kV) |
| ESD HBM (kV) |
| ? |
| CY74FCT138AT | CY74FCT138CT | CY74FCT138T | CY54FCT138T |
|---|---|---|---|
| ? | ? | Decoder Demultiplexer ? ? | Decoder/Demultiplexer ? ? |
| FCT ? ? | FCT ? ? | FCT ? ? | FCT ? ? |
| 4.75 ? ? | 4.75 ? ? | 4.75 ? ? | 4.75 ? ? |
| 5.25 ? ? | 5.25 ? ? | 5.25 ? ? | 5.25 ? ? |
| 1 ? ? | 1 ? ? | 1 ? ? | 1 ? ? |
| 5 ? ? | 5 ? ? | 5 ? ? | 5 ? ? |
| 70 ? ? | 70 ? ? | 70 ? ? | 70 ? ? |
| 0.2 ? ? | 0.2 ? ? | 0.2 ? ? | 0.2 ? ? |
| 5.8 ? ? | 5 ? ? | 6 ? ? | 6 ? ? |
| 3:8 ? ? | 3:8 ? ? | 3:8 ? ? | 3:8 ? ? |
| ? | ? | Standard ? ? | Standard ? ? |
| 64 ? ? | 64 ? ? | 64 ? ? | 64/-32 ? ? |
| -32 ? ? | -32 ? ? | -32 ? ? | ? |
| Catalog ? ? | Catalog ? ? | Catalog ? ? | Military ? ? |
| -40 to 85 ? ? | -40 to 85 ? ? | -40 to 85 ? ? | -55 to 125 ? ? |
| SOIC SSOP ? ? | SOIC SSOP ? ? | SSOP ? ? | CDIP LCCC ? ? |
| 16SOIC: 106 mm2: 10.3 x 10.3(SOIC) 16SSOP: 29 mm2: 6 x 4.9(SSOP) ? ? | 16SOIC: 106 mm2: 10.3 x 10.3(SOIC) 16SSOP: 29 mm2: 6 x 4.9(SSOP) ? ? | 16SSOP: 29 mm2: 6 x 4.9(SSOP) ? ? | See datasheet (CDIP) 20LCCC: 79 mm2: 8.89 x 8.89(LCCC) ? ? |
| 8 ? ? | 8 ? ? | 8 ? ? | 8 ? ? |
| 5 ? ? | 5 ? ? | 5 ? ? | 5 ? ? |
| 0.75 ? ? | 0.75 ? ? | 0.75 ? ? | 0.75 ? ? |
| 2 ? ? | 2 ? ? | 2 ? ? | 2 ? ? |
| 無樣片 | 無樣片 |