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HEF4585B MSI
General description
The HEF4585B is a 4-bit magnitude comparator which compares two 4-bit words (A and B), whether they are ?less than??, equal to?, or ?greater than?. Each word has four parallel inputs (A0 to A3 and B0 to B3 ); A3 and B3 being the most significant inputs. Three outputs are provided; A greater than B (OA> B ), A less than B (OA < B) and A equal to B (OA = B). Three expander inputs (IA > B IA < B and IA = B) allow cascading of the devices without external gates.
For proper compare operation the expander inputs to the least significant position must be connected as follows: IA = B = IA > B = HIGHIA < B = LOW. For words greater than 4-bits, units can be cascaded by connecting outputs OA < B and OA =B to the corresponding inputs of the next significant comparator (input IA > B is connected to a HIGH).
Operation is not restricted to binary codes, the devices will work with any monotonic code. The function table describes the operation of the device under all possible logic conditions.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| HEF4585BP | HEF4585BPN | 9333 343 40652 | Volume production | SOT38-4
(DIP16) | Bulk Pack, CECC | Standard Marking | HEF4585BP
| Always Pb-free |
| HEF4585BT | HEF4585BTD | 9333 733 40652 | Volume production | SOT109-1
(SO16) | Bulk Pack, CECC | Standard Marking | HEF4585BT
| week 6, 2004 |
| HEF4585BT | HEF4585BTD-T | 9333 733 40653 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13", CECC | Standard Marking | HEF4585BT
| week 6, 2004 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| HEF4585BP | 9333 343 40652 | 0.4500 | Order samples | |||||
| HEF4585BT | 9333 733 40652 | 0.3900 | not available | |||||
| HEF4585BT | 9333 733 40653 | 0.3900 | not available |
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| HEF4585BP | SOT38-4
(DIP16) | 4-Bit Magnitude Comparator | 45@15V | 4.5-15.5 V | 16 | Low Power or Automotive Applications | CMOS | +/- 2.4 mA @ 15 V |
| HEF4585BT | SOT109-1
(SO16) | 4-Bit Magnitude Comparator | 45@15V | 4.5-15.5 V | 16 | Low Power or Automotive Applications | CMOS | +/- 2.4 mA @ 15 V |
Similar products
HEF4585B MSI links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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