The HEF4021B is an 8-bit static shift register (parallel-to-serial converter) with a synchronous serial data input (DS), a clock input (CP), an asynchronous active HIGH parallel load input (PL), eight asynchronous parallel data inputs (D0 to D7) and buffered parallel outputs from the last three stages (Q5 to Q7). Each register stage is a D-type master-slave flip-flop with a set direct (SD) and clear direct (CD) input. Information on D0 to D7 is asynchronously loaded into the register while PL is HIGH, independent of CP and DS. When PL is LOW, data on DS is shifted into the first register position and all the data in the register is shifted one position to the right on the LOW-to-HIGH transition of CP. Schmitt trigger action makes the clock input highly tolerant of slower rise and fall times.
The device operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input.
Features and benefits
IC STATIC SHIFT REG 8BIT 16SOIC
Shift Shift Register 1 Element 8 Bit 16-SO
Shift Shift Register 1 Element 8 Bit 16-SO
Shift Shift Register 1 Element 8 Bit 16-SO
Shift Shift Register 1 Element 8 Bit 16-SO
IC STATIC SHIFT REG 8BIT 16SOIC
Manufacturer: Nexperia USA Inc.
Win Source Part Number: 1043094-HEF4021BT,65
Packaging: Reel - TR
Mounting: SMD (SMT)
Logic Type: Shift Register
Output Type: Push-Pull
Number of Elements: 1
Number of Bits per Element: 8
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -40°C to 125°C
Case / Package: 16-SO
Purpose: Parallel or Serial to Serial
Supply Voltage - Operating: 3 V to 15 V
Popularity: Medium
Fake Threat In the Open Market: 54 pct.
Supply and Demand Status: Sufficient
SHIFT REGISTER, 8BIT, PIPO/SIPO, SOIC-16; Logic Family / Base Number:HEF4021; Shift Register Function:Parallel to Parallel, Serial to Parallel; No. of Elements:1 Element; No. of Bits Per Element:8bit; Logic Case Style:SOIC; No. of RoHS Compliant: Yes
SHIFT REGISTER, 8BIT, PISO, SOIC-16; Logic Family / Base Number:HEF4021; Shift Register Function:Parallel to Serial; No. of Elements:1 Element; No. of Bits Per Element:8bit; Logic Case Style:SOIC; No. of Pins:16Pins; Supply Voltage RoHS Compliant: Yes
| Nexperia B.V. | Shenzhen Shengyu Electronics Technology Limited | DigiKey | Quarktwin Technology Ltd. | Lingto Electronic Limited | Win Source Electronics | Newark, An Avnet Company | Newark, An Avnet Company | |
|---|---|---|---|---|---|---|---|---|
| Product Category | Shift Registers | Shift Registers | Shift Registers | Shift Registers | Shift Registers | Shift Registers | Shift Registers | Shift Registers |
| Product Number | HEF4021BT,653 | HEF4021BT,653 | 1727-6403-1-ND | HEF4021BT,653 | HEF4021BT,653 | 1043094-HEF4021BT,653 | 85X0956 | 93X4267 |
| Product Name | 8-bit static shift register | Integrated Circuits (ICs) - Logic - Shift Registers | Shift Registers | Shift Registers | Logic - Shift Registers | Logic - Logic - Shift Registers - HEF4021BT,653 | Shift Register, 8Bit, Pipo/sipo, Soic-16; Logic Family / Base Number Nexperia | Shift Register, 8Bit, Piso, Soic-16; Logic Family / Base Number Nexperia |
| Supply Voltage | 3.0 - 15 | 1.5V | 3V ~ 15V | 1.5V; 3V ~ 15V | 3 V ~ 15 V | |||
| Features | ESD Protection | |||||||
| Package Type | Other; SOT109-1 | SOIC | SOIC; Other; 16-SOIC (0.154", 3.90mm Width) | SOIC; Other; 16-SOIC (0.154\", 3.90mm Width) | Other; 16-SO | |||
| Logic Family | CMOS | |||||||
| Clock Frequency | 40 MHz |
