tc74act299 TOSHIBA Semiconductor CORPORATION, tc74act299 Datasheet - Page 2

• Manufacturer Part Number: tc74act299
• Description: 8-bit Pipo Shift Register With Asynchronous Clear
• Manufacturer: TOSHIBA Semiconductor CORPORATION

IEC Logic Symbol
Truth Table
Note:
Z: High impedance
Qn0: The level of Qn before the indicated steady-state input conditions were established.
Qnn: The level of Qn before the most recent active transition indicated by ↓ or ↑.
a, h: The level of the steady-state inputs A, H, respectively.
X: Don’t care
Mode
Clear
Right
Load
Hold
Shift
Shift
Left
Z
CLR
H
H
H
H
H
H
When one or both output controls are high, the eight input/output terminals are in the high-impedance state;
however sequential or clearing of the register is not affected.
L
L
L
S1
H
X
H
H
H
L
L
L
L
Function
Select
S0
H
X
H
H
H
L
L
L
L
Outputs Control
G
(Note)
X
X
L
L
L
L
L
L
L
1
Inputs
G
(Note)
X
X
L
L
L
L
L
L
L
2
CK
X
X
X
X
2
SL
H
X
X
X
X
X
X
X
L
Serial
SR
X
X
X
X
H
X
X
X
L
A/QA
QA0
QBn
QBn
H
Z
L
L
L
a
Outputs
Inputs/
H/QH
QH0
QGn
QGn
H
Z
L
L
L
h
QA0
QBn
QBn
QA’
H
L
L
L
L
a
Outputs
TC74ACT299P/F
QH0
QGn
QGn
QH’
H
L
L
L
L
h
2007-10-01