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Toshiba Electronic Components Datasheet

TC74ACT299P Datasheet

8-Bit PIPO Shift Register

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TC74ACT299P/F
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74ACT299P, TC74ACT299F
8-Bit PIPO Shift Register with Asynchronous Clear
The TC74ACT299 is an advanced high speed CMOS 8-BIT
PIPO SHIFT REGISTER fabricated with silicon gate and
double-layer metal wiring C2MOS technology.
It achieves the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
This device may be used as a level converter for interfacing
TLL or NMOS to High Speed CMOS. The inputs are compatible
with TTL, NMOS and CMOS output voltage levels.
It has a four modes (HOLD, SHIFT LEFT, SHIFT RIGHT and
LOAD DATA) controlled by the two selection inputs (S0, S1).
When one or both enable ( G1 , G2 ) are high, the eight I/O
outputs are forced to the high-impedance state; however,
sequential operation or clearing of the register is not affected.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
TC74ACT299P
TC74ACT299F
Features (Note 1)(Note 2)
High speed: fmax = 130 MHz (typ.) at VCC = 5 V
Low power dissipation: ICC = 8 μA (max) at Ta = 25°C
Compatible with TTL outputs: VIL = 0.8 V (max)
VIH = 2.0 V (min)
Symmetrical output impedance: |IOH| = IOL = 24 mA (min)
Capability of driving 50 Ω
transmission lines.
Balanced propagation delays: tpLH ∼− tpHL
Pin and function compatible with 74F299
Weight
DIP20-P-300-2.54A
SOP20-P-300-1.27A
: 1.30 g (typ.)
: 0.22 g (typ.)
Note 1: Do not apply a signal to any bus terminal when it is in the output mode. Damage may result.
Note 2: All floating (high impedance) bus terminals must have their input levels fixed by means of pull up or pull
down resistors.
Pin Assignment
Start of commercial production
1989-11
1
2014-03-01


Toshiba Electronic Components Datasheet

TC74ACT299P Datasheet

8-Bit PIPO Shift Register

No Preview Available !

IEC Logic Symbol
TC74ACT299P/F
Truth Table
Mode
CLR
Z
L
L
Clear
L
Hold H
Shift H
Right H
Shift H
Left H
Load H
Function
Select
S1 S0
H
H
L
X
X
L
L
L
L
H
L
H
H
L
H
L
H
H
Inputs
Outputs Control
CK
G1
G2
(Note) (Note)
X
X
X
L
L
X
L
L
X
L
L
X
L
L
L
L
L
L
L
L
X
X
Serial
SL SR
Inputs/
Outputs
A/QA H/QH
Outputs
QA’ QH’
X
X
Z
Z
L
L
X
X
L
L
L
L
X
X
L
L
L
L
X
X QA0 QH0 QA0 QH0
X
H
H QGn H QGn
X
L
L QGn L QGn
H
X QBn H QBn H
L
X QBn L QBn L
X
X
a
h
a
h
Note: 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.
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
2
2014-03-01


Part Number TC74ACT299P
Description 8-Bit PIPO Shift Register
Maker Toshiba
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TC74ACT299P Datasheet PDF






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