HD74HC299 Datasheet, PDF (3/9 Pages) Hitachi Semiconductor – 8-bit Universal Shift/Storage Register (with 3-state outputs)

HD74HC299
Logic Diagram
Sift
right
serial-input
S1
S0
Sift
left
serial-input
Clear
Clock
G1
G2
D
Q
D
Q
D
Q
D
Q
D
Q
D
Q
D
Q
D
Q
C C CLR
C C CLR
C C CLR
C C CLR
C C CLR
C C CLR
C C CLR
C C CLR
Q/A
A/QA
B/QB
C/QC
D/QD
E/QE
F/QF
G/QG QH
H/QH
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage range
Input / Output voltage
Input / Output diode current
Output current
V_CC, GND current
Power dissipation
Storage temperature
V_CC
V_IN, V_OUT
I_IK, I_OK
I_O
I_CC or I_GND
P_T
Tstg
–0.5 to 7.0
V
–0.5 to V_CC +0.5
V
±20
mA
±35
mA
±75
mA
500
mW
–65 to +150
°C
Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of
which may be realized at the same time.
Recommended Operating Conditions
Item
Symbol
Ratings
Supply voltage
V_CC
2 to 6
Input / Output voltage
V_IN, V_OUT
0 to V_CC
Operating temperature
Input rise / fall time^*1
Ta
–40 to 85
t_r, t_f
0 to 1000
0 to 500
0 to 400
Notes: 1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
Unit
V
V
°C
ns
Conditions
V_CC = 2.0 V
V_CC = 4.5 V
V_CC = 6.0 V
Rev.2.00 Jan 31, 2006 page 3 of 8