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PI3B3244QE Datasheet

  • PI3B3244QE

  • 3.3V, Hot Insertion, 8-Bit, 2-Port NanoSwitch

  • 5頁(yè)

  • PERICOM   PERICOM

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PI3B3244
3.3V, Hot Insertion,
8-Bit, 2-Port
NanoSwitch鈩?/div>
Features
鈥?Near-Zero propagation delay
鈥?5-ohm switches connect inputs to outputs when enabled
鈥?Fast Switching Speed - 4.5ns max.
鈥?Ultra-Low Quiescent Power (0.2碌A(chǔ) Typical)
鈥?Ideally suited for notebook applications
鈥?Pin compatible with 74 series 244 logic devices
鈥?Packaging:
鈥?20-pin 150-mil wide plastic QSOP (Q)
鈥?20-pin 173-mil wide plastic TSSOP (L)
Description
Pericom Semiconductor鈥檚 PI3B series of logic circuits are produced
using the Company鈥檚 advanced sub-micron CMOS technology,
achieving industry leading performance.
The PI3B3244 features a set of 3.3V 8-bit bus switches, which is
pinout and function compatible with the P74FCT244T, 74F244, and
74ALS/AS/LS2448-bit drivers. Two enable signals (BEn) turn the
switches on similar to the enable signals of the 244. The bus switch
create no additional propagation delay or ground bounce noise.
Block Diagram
BE
1
1A
0
1A
1
1A
2
1A
3
SW
Pin Configuration
BE1
1
A
0
2
B
3
1
A
1
2
B
2
1
A
2
2
B
1
1
A
3
2
B
0
GND
B
1B
0
1B
1
1B
0
1B
1
A
SW
SW
SW
SW
20
1
19
2
18
3
17
4
20-Pin
16
5
Q,L
15
6
14
7
13
8
12
9
11
10
Vcc
BE
2
1
B
0
2
A
3
1
B
1
2
A
2
1
B
2
2
A
1
1
B
3
2
A
0
BE
2
2A
0
2A
1
2A
2
2A
3
SW
2B
0
2B
1
2B
2
2B
3
BE
Pin Description
Pin Name
BEn
A
0
鈥?/div>
7
B
0
鈥?/div>
7
GND
V
CC
Description
Bus Enable Input (Active LOW)
Bus A
Bus B
Ground
Power
SW
SW
SW
Truth Table
(1)
BE1
H
L
H
L
BE2
H
H
L
L
1A, 1B
Disconnect
1A = 1B
Disconnect
1A = 1 B
2A, 2B
Disconnect
Disconnect
2A = 2B
2A = 2B
Note:
1. H = High Voltage Level, L = Low Voltage Level
1
PS8149F
08/25/04

PI3B3244QE 產(chǎn)品屬性

  • 55

  • 集成電路 (IC)

  • 邏輯 - 信號(hào)開關(guān)，多路復(fù)用器，解碼器

  • -

  • 總線開關(guān)

  • 4 x 1:1

  • 2

  • -

  • 單電源

  • 3.3V

  • -40°C ~ 85°C

  • 表面貼裝

  • 20-SSOP（0.154"，3.90mm 寬）

  • 20-QSOP

  • 管件

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