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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B16244
3.3V, 16-Bit, 4-Port
NanoSwitch聶
Product Features
聲
聲
聲
聲
聲
聲
聲
Near-zero propagation delay
5-ohm switches connect inputs to outputs when enabled
Fast Switching Speed - 4ns max.
Pin compatible with 74 series 16244
Operating Vcc: 3.0V to 3.6V
Industrial operating temperature: 聳40擄C to +85擄C
Packages available:
聳 48-pin 240 mil wide thin plastic TSSOP (A)
聳 48-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor聮s PI3B series of logic circuits are produced
using the Company聮s advanced submicron CMOS technology.
The PI3B16244 is a 16-bit, 4-port bus switch that is pin compatible
with the 74 series 16244 16-bit driver. Four enable signals (nBE) turn
the switch on similar to the enable signals of the 16244. The bus
switch creates no additional propagation delay or ground bounce
noise.
Logic Block Diagram
1
BE
1
A
0
1
A
1
1
A
2
1
A
3
3
BE
Product Pin Configuration
1
BE
1
B
0
1
2
3
4
5
6
7
8
9
10
48-Pin
11
A, V
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
2
BE
1
A
0
1
A
1
SW
SW
SW
SW
1
B
0
1
B
1
1
B
0
1
B
1
3
A
0
3
A
1
3
A
2
3
A
3
SW
SW
SW
SW
3
B
0
3
B
1
3
B
0
3
B
1
A
B
1
B
1
GND
1
B
2
1
B
3
GND
1
A
2
1
A
3
SW
V
CC
2
B
0
2
B
1
V
CC
2
A
0
2
A
1
GND
2
B
2
2
B
3
GND
2
A
2
2
A
3
3
A
0
3
A
1
2
BE
2
A
0
4
BE
SW
SW
SW
SW
2
B
0
2
B
1
2
B
2
2
B
3
4
A
0
SW
SW
SW
SW
4
B
0
4
B
1
4
B
2
4
B
3
BE
3
B
0
3
B
1
2
A
1
2
A
2
2
A
3
4
A
1
4
A
2
4
A
3
GND
3
B
2
3
B
3
GND
3
A
2
3
A
3
V
CC
4
B
0
4
B
1
V
CC
4
A
0
4
A
1
GND
GND
4
A
2
4
A
3
3
BE
Truth Table
(1)
4
B
2
4
B
3
Function
Disconnect
Connect
nBE
H
L
nA0-7
Hi- Z
nB0- 7
4
BE
Product Pin Description
Pin Name
nBE
nA0- nA7
nB0- nB7
I/O
I
I/O
I/O
Bus A
Bus B
D e s cription
Bus O utput Enable (Active Low)
Note:
1. H
= High Voltage Level
L
= Low Voltage Level
Hi-Z = High Impedance
1
PS8170C
04/11/02
1
2
3
4
