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HEF4028B
Datasheet
General description
The HEF4028B is a 4-bit BCD to 1-of-10 active HIGH decoder. A 1-2-4-8 BCD code applied to inputs A0 to A3 causes the selected output to be HIGH, the other nine will be LOW. If desired, the device may be used as a 1-of-8 decoder with enable; 3-bit octal inputs are applied to inputs A0 , A1 and A2 selecting an output O0 to O7 . Input A3 then becomes an active LOW enable, forcing the selected output LOW when A3 is HIGH. The HEF4028B may also be used as an 8-output (O0 to O7 ) demultiplexer with A0 to A2 as address inputs and A3 as an active LOW data input. The outputs are fully buffered for best performance.
Features
- Wide input frequency range (350 MHz to 650 MHz)
- On IC high precision 0° and 90° phase shifter
- 5 V supply voltage
- Internal voltage reference
- Suitable for symbol rate up to 45 Msymbols/s
- Nominal overall conversion gain (from IF input to I and Q outputs) adjustable from 42 dB to13 dB.
- Low noise AGC amplifier with 21 dB gain control range
- 30 MHz 1 dB bandwidth output buffers
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| HEF4028BP | HEF4028BPN | 9332 827 30652 | Volume production | SOT38-4
(DIP16) | Bulk Pack, CECC | Standard Marking | HEF4028BP
| Always Pb-free |
| HEF4028BT | HEF4028BTD | 9333 728 00652 | Volume production | SOT109-1
(SO16) | Bulk Pack, CECC | Standard Marking | HEF4028BT
| week 6, 2004 |
| HEF4028BT | HEF4028BTD-T | 9333 728 00653 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13", CECC | Standard Marking | HEF4028BT
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| HEF4028BP | 9332 827 30652 | 0.2400 | ASIA | WPI | 10,000 | 1000 | 01/07/2009 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 2,000 | 1/7/2009 | Buy online | |||||
| NA | DIGI-KEY CORPORATION | 1,111 | 1/6/2009 | Buy online | |||||
| HEF4028BT | 9333 728 00652 | 0.1900 | NA | ARROW ELECTRONICS | 2,000 | 1/6/2009 | Buy online | not available | |
| NA | DIGI-KEY CORPORATION | 4,201 | 1/6/2009 | Buy online | |||||
| HEF4028BT | 9333 728 00653 | 0.1900 | ASIA | SAC - Taiwan | yes | 2500 | 01/08/2009 | Buy online | not available |
| NA | MOUSER ELECTRONICS | 450 | 1/7/2009 | Buy online |
Applications
- BPSK and QPSK demodulation
- Professional and consumer satellite decoders
- Data communication system
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| HEF4028BP | SOT38-4
(DIP16) | 1-of-10 Decoder | 30@15V | 4.5-15.5 | 16 | Low Power or Automotive Applications | CMOS | +/- 2.4 mA @ 15 V |
| HEF4028BT | SOT109-1
(SO16) | 1-of-10 Decoder | 30@15V | 4.5-15.5 | 16 | Low Power or Automotive Applications | CMOS | +/- 2.4 mA @ 15 V |
Similar products
HEF4028B
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