DF221
DF221 is CMOS Gate Array manufactured by AMI.
Description
DF221 is a static, master-slave, multiplexed scan D flip-flop. SET is asynchronous and active low. Output is unbuffered and changes state on the rising edge of the clock.
Logic Symbol DF221
DS C SD SE
Truth Table C ↑ ↑ ↑ ↑ X L
D SD SE SN HX L H LXLH XHHH X LHH XXXL XXXH
NC = No Change
Q H L H L H NC
Pin Loading Equivalent Load
C 1.0 D 1.0 SD 1.0 SE 2.1 SN 2.1
Equivalent Gates 11.0
HDL Syntax Verilog DF221 inst_name (Q, C, D, SD, SE, SN); VHDL inst_name: DF221 port map (Q, C, D, SD, SE, SN);
Size And Power Characteristics
Parameter
Value
Static IDD (TJ = 85°C) EQLpd
See page 2-15 for power equation.
TBD 19.5
Units n A
Eq-load
Propagation Delays Conditions: TJ = 25°C, VDD = 5.0V, Typical Process
From Delay (ns) To Parameter
Number of Equivalent Loads 258
Q t PLH t PHL
0.67 0.64
0.70 0.69
Q t PLH
Delay...
