English
Language : 

HD74AC166 Datasheet, PDF (1/9 Pages) Hitachi Semiconductor – 8-bit Shift Register
HD74AC166/HD74ACT166
8-bit Shift Register
REJ03D0255–0200Z
(Previous ADE-205-375 (Z))
Rev.2.00
Jul.16.2004
Description
The HD74AC166/HD74ACT166 is an 8-bit, serial or parallel-in, serial-out shift register using edge triggered D-type
flip-flops. Serial and parallel entry are synchronous, with state changes initiated by the rising edge of the clock. An
asynchronous Master Reset overrides other inputs and clears all flip-flops. The circuit can be clocked from two sources
or one CP input can be used to trigger the other.
Features
• Outputs Source/Sink 24 mA
• HD74ACT166 has TTL-Compatible Inputs
• Ordering Information: Ex. HD74AC166
Part Name
Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity)
HD74AC166AFPEL SOP-16 pin (JEITA) FP-16DAV
FP
EL (2,000 pcs/reel)
HD74AC166ARPEL SOP-16 pin (JEDEC) FP-16DNV
RP
EL (2,500 pcs/reel)
HD74AC166TELL TSSOP-16 pin
TTP-16DAV
T
ELL(2,000 pcs/reel)
Notes: 1. Please consult the sales office for the above package availability.
2. The packages with lead-free pins are distinguished from the conventional products by adding V at the end of
the package code.
Pin Arrangement
DS 1
P0 2
P1 3
P2 4
P3 5
CP2 6
CP1 7
GND 8
(Top view)
16 VCC
15 PE
14 P7
13 Q7
12 P6
11 P5
10 P4
9 MR
Rev.2.00, Jul.16.2004, page 1 of 8