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74F1244
Datasheet
(Product Specification)
04-Apr-89, 8 pages, 85 kB
General description
The 74F1244 is an octal buffer that is ideal for driving bus lines or buffer memory address registers. The outputs are capable of sinking 64mA and sourcing up to 15mA, producing very good capacitive drive characteristics. The device features two Output Enables, OEa and OEb, each controlling four of the 3-State outputs.
The 74F1244 is pin and functionally compatible with the 74F244. The lower power and light bus loading features make it an ideal part to interface directly with MOS microprocessors.
Features
- High impedance NPN base inputs for reduced loading (20µA in High and Low states)
- Low power, light loading
- Functional pin-for-pin equivalent of 74F244
- 1/30th the bus loading of 74F244
- Provides ideal interface and increase fan-out of MOS microprocessors
- Octal bus interface
- 3-State buffer outputs sink 64mA and source 15mA
Products/packages
All type numbers in the table below are discontinued. See the table Discontinued information for more information.
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| N74F1244D | N74F1244D,602 | 9338 117 00602 | Discontinued Replacement product | SOT163 | Tube (Signetics) | Standard Marking | |
| N74F1244D | N74F1244D,623 | 9338 117 00623 | Discontinued Replacement product | SOT163 | Reel Pack, SMD, 13" (Signetics) | Standard Marking | |
| N74F1244N | N74F1244N,602 | 9337 689 90602 | Discontinued Replacement product | SOT146-1
(DIP20) | Tube (Signetics) | Standard Marking |
Quality/reliability/chemical content
All type numbers in the table below are discontinued. See the table Discontinued information for more information.
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| N74F1244D | N74F1244D,602 | N74F1244D |
| week 30, 2004 | 5,63 | 1,78E+08 | 1 | |
| N74F1244D | N74F1244D,623 | N74F1244D |
| week 30, 2004 | 5,63 | 1,78E+08 | 1 | |
| N74F1244N | N74F1244N,602 | N74F1244N |
| Always Pb-free | 5,63 | 1,78E+08 | NA |
Discontinued information
| Type number | Ordering code (12NC) | Last-time buy date | Last-time delivery date | Replacement product | DN Notice | Status | Comments |
|---|---|---|---|---|---|---|---|
| N74F1244D | 933811700602 | 31-mrt-10 | 30-jun-10 | $product.prunedProduct.eplacementPart | DN 64 |
| Standard End of Life. |
| N74F1244D | 933811700623 | 31-mrt-10 | 30-jun-10 | $product.prunedProduct.eplacementPart | DN 64 |
| Standard End of Life. |
| N74F1244N | 933768990602 | 31-mrt-10 | 30-jun-10 | $product.prunedProduct.eplacementPart | DN 64 |
| Standard End of Life. |
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 |
|---|---|---|---|---|---|---|---|
| N74F1244D | SOT163
| Buffer/Light Load F244 (3-State) | 5 | 4.5-5.5 V | 20 | TTL | -15/+64 mA |
| N74F1244N | SOT146-1
(DIP20) | Buffer/Light Load F244 (3-State) | 5 | 4.5-5.5 V | 20 | TTL | -15/+64 mA |
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74F1244
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