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74F399
Datasheet
General description
The 74F399 is the logical equivalent of a quad 2-input multiplexer feeding into four edge-triggered flip-flops. A common Select input determines which of two 4-bit words is accepted. The selected data enters the flip-flops on the rising edge of the clock.
The 74F399 is a high speed quad 2-port register. They select 4 bits of data from either of two sources (Ports) under control of a common select input (S). The selected data is transferred to a 4-bit output register synchronous with the Low-to-High transition of the Clock input (CP). The 4-bit D-type output register is fully edge-triggered. The Data inputs (I0n, I1n) and Select input (S) must be stable only a setup time prior to and hold time after the Low-to-High transition of the Clock input for predictable operation.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| N74F399D | N74F399D | 9337 791 40602 | Volume production | SOT109-1
(SO16) | Tube (Signetics) | Standard Marking | N74F399D
| week 6, 2004 |
| N74F399D | N74F399D-T | 9337 791 40623 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F399D
| week 6, 2004 |
| N74F399N | N74F399N | 9337 689 40602 | Volume production | SOT38-4
(DIP16) | Tube (Signetics) | Standard Marking | N74F399N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| N74F399D | 9337 791 40602 | 0.4100 | NA | MOUSER ELECTRONICS | 975 | 1/8/2009 | Buy online | not available | |
| N74F399D | 9337 791 40623 | 0.4100 | Order samples | ||||||
| N74F399N | 9337 689 40602 | 0.4300 | Order samples |
Design support
Application Notes
AN202_1;
Testing and specifying FAST logic (01-Jun-87)AN203_2;
Test Fixtures for High Speed Logic (02-Apr-98)AN216_2;
Arbitration in shared resource systems (18-Jul-88)Parametrics/similar products
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| N74F399D | SOT109-1
(SO16) | Quad 2-Port Register | 120 | 6.5 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| N74F399N | SOT38-4
(DIP16) | Quad 2-Port Register | 120 | 6.5 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
Similar products
74F399
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