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Octal Transparent
LATCHES
OCTAL TRANSPARENT
Latches
Fast CMOS Octal
Transparent Latches
Product Features:
聲 PI74FCT373/533/573/2373/2573T is pin compatible with bipolar
FAST聶 Series at a higher speed and lower power
consumption
聲 25鈩?series resistor on all outputs (FCT2XXX only)
聲 TTL input and output levels
聲 Low ground bounce outputs
聲 Extremely low static power
聲 Hysteresis on all inputs
聲 Industrial operating temperature range: 聳40擄C to +85擄C
聲 Packages available:
聳 20-pin 173 mil wide plastic TSSOP (L)
聳 20-pin 300 mil wide plastic DIP (P)
聳 20-pin 150 mil wide plastic QSOP (Q)
聳 20-pin 150 mil wide plastic TQSOP (R)
聳 20-pin 300 mil wide plastic SOIC (S)
聲 Device models available upon request
Product Description:
Pericom Semiconductor聮s PI74FCT series of logic circuits are
produced in the Company聮s advanced 0.6/0.8 micron CMOS
technology, achieving industry leading speed grades. All
PI74FCT2XXX devices have a built-in 25 ohm series resistor on
all outputs to reduce noise resulting from reflections, thus
eliminating the need for an external terminating resistor.
The PI74FCT373T/533T/573T and P174FCT2373T/2573T are
8-bit wide octal transparent latches designed with 3-state outputs
and are intended for bus oriented applications. When Latch Enable
(LE) is HIGH, the flip-flops appear transparent to the data. The
data that meets the set-up time when LE is LOW is latched. When
OE is HIGH, the bus output is in the high impedance state.
PI74FCT373/2373T and PI74FCT573/2573T Logic Block Diagram
D
0
D
O
G
G
D
1
D
O
G
D
2
D
O
G
D
3
D
O
G
D
4
D
O
G
D
5
D
O
G
D
6
D
O
G
D
7
D
O
LE
OE
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
PI74FCT533T Logic Block Diagram
D
0
D
O
G
G
D
1
D
O
G
D
2
D
O
G
D
3
D
O
G
D
4
D
O
G
D
5
D
O
G
D
6
D
O
G
D
7
D
O
LE
OE
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
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PS2015A 03/11/96
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