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74F253
Datasheet
(Product Specification)
29-Nov-88, 10 pages, 90 kB
General description
The 74F253 has two identical 4-input multiplexers with 3-State outputs which select two bits from four sources selected by common Select inputs (S0, S1). When the individual Output Enable (OEa, OEb) inputs of the 4-input multiplexers are High, the outputs are forced to a high impedance (Hi-Z) state.
The 74F253 is the logic implementation of a 2-pole, 4-position switch; the position of the switch being determined by the logic levels supplied to the two common Select inputs.To avoid exceeding the maximum current ratings when the outputs of the 3-State devices are tied together, all but one device must be in the high-impedance state. Therefore, only one Output Enable must be active at a time.
Features
- 3-State outputs for bus interface and multiplex expansion
- Common select inputs
- Separate Output Enable Inputs
Products/packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| N74F253D | N74F253D,602 | 9337 567 30602 | Volume production | SOT109 | Tube (Signetics) | Standard Marking | |
| N74F253D | N74F253D,623 | 9337 567 30623 | Volume production | SOT109 | Reel Pack, SMD, 13" (Signetics) | Standard Marking | |
| N74F253N | N74F253N,602 | 9337 567 20602 | Volume production | SOT38-4
(DIP16) | Tube (Signetics) | Standard Marking |
Quality/reliability/chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| N74F253D | N74F253D,602 | N74F253D |
| week 6, 2004 | 5,63 | 1,78E+08 | 1 | |
| N74F253D | N74F253D,623 | N74F253D |
| week 6, 2004 | 5,63 | 1,78E+08 | 1 | |
| N74F253N | N74F253N,602 | N74F253N |
| Always Pb-free | 5,63 | 1,78E+08 | NA |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|---|
| N74F253D | 9337 567 30602 | N74F253D,602 | 0.2800 | not available | ||||||
| N74F253D | 9337 567 30623 | N74F253D,623 | 0.2800 | not available | ||||||
| N74F253N | 9337 567 20602 | N74F253N,602 | 0.3400 | not available |
Design support
Application Notes
AN216;
Arbitration in shared resource systems (1988-07-18)AN203;
Test Fixtures for High Speed Logic (1998-04-02)AN202;
Testing and specifying FAST logic (1987-06-01)Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| N74F253D | SOT109
| Dual 4-Input Multiplexer (3-State) | 5 | 4.5-5.5 V | 16 | TTL | -3/+24 mA |
| N74F253N | SOT38-4
(DIP16) | Dual 4-Input Multiplexer (3-State) | 5 | 4.5-5.5 V | 16 | TTL | -3/+24 mA |
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74F253
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