BF981 Datasheet PDF – 20V, 20mA, N-Ch, Dual Gate MOSFET

Part Number: BF981

Function: 20V, 20mA, DUAL GATE MOSFET

Package: SOT-103 Type

Manufacturer: Philips Semiconductors




This is 20V, 20mA, Silicon N-Channel Dual Gate MOSFET.

Depletion type field-effect transistor in a plastic X-package with source and substrate interconnected, intended for v.h.f. applications, such as v.h.f. television tuners, f.m. tuners and professional communication equiment. This MOSFET tetrode is protected against excessive input voltage surges by integrated back-to-back didodes between gates and source.



Quick Referece Data :

1. Drain-source voltage : Vds = max. 20V

2. Drain current : Id = max. 20mA

3. Total power dissipation up to Tamb = 75’C : Ptot = max. 225mW


BF981 Datasheet

BF981 pdf


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74HC595 Datasheet PDF – 8-Bit, Shift Register – Philips

Part Number: 74HC595, 74HC595N

Function: 8-bit serial-in/serial or parallel-out shift register with output latches 3-state

Package: DIP 16 Pin Type

Manufacturer: Philips Semiconductors




The 74HC595, 74HCT595 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The “595” is an 8-stage serial shift register with a storage register and 3-state outputs. The shift register and storage register have separate clocks. Data is shifted on the positive-going transitions of the SHCP input. The data in each register is transferred to the storage register on a positive-going transition of the STCP input. If both clocks are connected together, the shift register will always be one clock pulse ahead of the storage register.




1. 8-bit serial input

2. 8-bit serial or parallel output

3. Storage register with 3-state outputs

4. Shift register with direct clear

5. 100 MHz (typ) shift out frequency

6. Output capability :
(1) parallel outputs; bus driver
(2) serial output; standard

7. ICC category: MSI.


1. Serial-to-parallel data conversion

2. Remote control holding register.


74HC595N : DIP16
74HC595D : SO16
74HC595DB : SSOP16
74HC595PW : TSSOP16
74HCT595N : DIP16
74HCT595D : SO16

74HC595 Datasheet PDF