鈥?/div>
Near-zero propagation delay
5鈩?switches connect inputs to outputs when enabled
Fast Switching Speed - 4ns max.
Permits Hot Insertion
Pin compatible with 74 series16244
Operating Vcc: 3.0V to 3.6V
Industrial operating temperature: 鈥?0擄C to +85擄C
Packages available:
鈥?48-pin 240 mil wide thin plastic TSSOP (A)
鈥?48-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor鈥檚 PI3B series of logic circuits are produced
using the Company鈥檚 advanced 0.35 micron CMOS technology.
The PI3B16244 and PI3B162244 are 16-bit, 4-port bus switches
that are pin compatible with the 74 series 16244 16-bit driver. Four
enable signals (nBE) turn the switches on similar to the enable
signals of the 16244. The bus switches create no additional
propagation delay or ground bounce noise.
The PI3B162244 device has a built-in 25-ohm series resistor to
reduce noise because of reflections, thus eliminating the need for
an external terminating resistor.
Logic Block Diagram
1
BE
3
BE
Product Pin Configuration
1
BE
1
B
0
1
B
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
2
BE
1
A
0
1
A
1
1A
0
1A
1
1A
2
1A
3
1B
0
1B
1
1B
2
1B
3
3A
0
3A
1
3A
2
3A
3
3B
0
3B
1
3B
2
3B
3
GND
1
B
2
1
B
3
GND
1
A
2
1
A
3
V
CC
2
B
0
2
B
1
V
CC
2
A
0
2
A
1
GND
2
B
2
2
B
3
2
BE
4
BE
3
B
0
3
B
1
2A
0
2A
1
2A
2
2A
3
2B
0
2B
1
2B
2
2B
3
4A
0
4A
1
4A
2
4A
3
4B
0
4B
1
4B
2
4B
3
GND
3
B
2
3
B
3
V
CC
4
B
0
4
B
1
GND
4
B
2
4
B
3
Truth Table
(1)
Function
Disconnect
Connect
nBE
H
L
nA
0鈥?
Hi-Z
nB
0鈥?
4
BE
48-Pin
38
A, V
37
36
35
34
33
32
31
30
29
28
27
26
25
GND
2
A
2
2
A
3
3
A
0
3
A
1
GND
3
A
2
3
A
3
V
CC
4
A
0
4
A
1
GND
4
A
2
4
A
3
3
BE
Product Pin Description
Pin Name
nBE
nA
0
-nA
7
nB
0
-nB
7
I/O
I
I/O
I/O
Description
Bus Output Enable
(Active LOW)
Bus A
Bus B
Note:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
1
PS8170B
11/06/98
1
2
3
