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HEF4543B MSI
General description
The HEF4543B is a BCD to 7-segment latch/decoder/driver for liquid crystal and LED displays. It has four address inputs (DA to DD ), an active HIGH latch disable input (LD), an active HIGH blanking input (BI), an active HIGH phase input (PH) and seven buffered segment outputs (Oa to Og ).
The circuit provides the function of a 4-bit storage latch and an 8-4-2-1 BCD to 7-segment decoder/driver. It can invert the logic levels of the output combination. The phase (PH), blanking (BI) and latch disable (LD) inputs are used to reverse the function table phaseblank the display and store a BCD coderespectively.
For liquid crystal displays a square-wave is applied to PH and the electrical common back-plane of the display. The outputs of the device are directly connected to the segments of the liquid crystal.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| HEF4543BP | HEF4543BPN | 9333 343 20652 | Volume production | SOT38-4
(DIP16) | Bulk Pack, CECC | Standard Marking | HEF4543BP
| Always Pb-free |
| HEF4543BT | HEF4543BTD | 9333 733 00652 | Volume production | SOT109-1
(SO16) | Bulk Pack, CECC | Standard Marking | HEF4543BT
| week 6, 2004 |
| HEF4543BT | HEF4543BTD-T | 9333 733 00653 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13", CECC | Standard Marking | HEF4543BT
| week 6, 2004 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| HEF4543BP | 9333 343 20652 | 0.4000 | NA | ARROW ELECTRONICS | 2,975 | 1/6/2009 | Buy online | Order samples | |
| NA | DIGI-KEY CORPORATION | 4,850 | 1/6/2009 | Buy online | |||||
| NA | FUTURE ELECTRONICS | 1,947 | 1/7/2009 | Buy online | |||||
| NA | MOUSER ELECTRONICS | 1,952 | 1/7/2009 | Buy online | |||||
| HEF4543BT | 9333 733 00652 | 0.3400 | not available | ||||||
| HEF4543BT | 9333 733 00653 | 0.3400 | NA | AVNET ELECTRONICS MARKETING | 7,500 | 1/7/2009 | Buy online | Order samples | |
| NA | FUTURE ELECTRONICS | 3,000 | 1/7/2009 | Buy online |
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| HEF4543BP | SOT38-4
(DIP16) | BCD to 7-Segment Latch/Decoder/Driver with Phase Input | 55@15V | 4.5-15.5 V | 16 | Low Power or Automotive Applications | CMOS | +/- 2.4 mA @ 15 V |
| HEF4543BT | SOT109-1
(SO16) | BCD to 7-Segment Latch/Decoder/Driver with Phase Input | 55@15V | 4.5-15.5 V | 16 | Low Power or Automotive Applications | CMOS | +/- 2.4 mA @ 15 V |
Similar products
HEF4543B MSI
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