参数资料
| 型号： | PI3B3244QE |
| 厂商： | Pericom |
| 文件页数： | 1/5页 |
| 文件大小： | 0K |
| 描述： | IC 8-BIT BUS SW 2-PORT 20-QSOP |
| 标准包装： | 55 |
| 类型： | 总线开关 |
| 电路： | 4 x 1:1 |
| 独立电路： | 2 |
| 电压电源： | 单电源 |
| 电源电压： | 3.3V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-QSOP |
| 包装： | 管件 |
1
PS8149F
08/25/04
BE2
BE1
1B1
1B0
1A1
1A0
1B1
1B0
1A3
1A2
2B1
2B0
2A1
2A0
2B3
2B2
2A3
2A2
B
A
BE
SW
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
BE1
1
A0
2
B3
1
A1
2
B2
1
A2
2
B1
1
A3
2
B0
GND
Vcc
BE2
1
B0
2
A3
1
B1
2
A2
1
B2
2
A1
1
B3
2
A0
Description
Pericom Semiconductor’s PI3B series of logic circuits are produced
using the Company’s 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.
Truth Table(1)
Note:
1. H = High Voltage Level, L = Low Voltage Level
Block Diagram
PinDescription
PinName
Description
BEn
Bus Enable Input (Active LOW)
A0–7
Bus A
B0–7
Bus B
GND
Ground
VCC
Power
PinConfiguration
PI3B3244
3.3V, Hot Insertion,
8-Bit, 2-Port NanoSwitch
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Features
Near-Zero propagation delay
5-ohm switches connect inputs to outputs when enabled
Fast Switching Speed - 4.5ns max.
Ultra-Low Quiescent Power (0.2A Typical)
– Ideally suited for notebook applications
Pin compatible with 74 series 244 logic devices
Packaging:
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 173-mil wide plastic TSSOP (L)
20-Pin
Q,L
1
E
B2
E
BB
1
,
A
1B
2
,
A
2
HH
t
c
e
n
o
c
s
i
Dt
c
e
n
o
c
s
i
D
LH
B
1
=
A
1t
c
e
n
o
c
s
i
D
HL
t
c
e
n
o
c
s
i
DB
2
=
A
2
LL
B
1
=
A
1B
2
=
A
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PI3B3244QEX | 功能描述:数字总线开关 IC 3.3V 8B Bus Switch RoHS:否 制造商:Texas Instruments 开关数量:24 传播延迟时间:0.25 ns 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TSSOP-56 封装:Reel |
| PI3B3244QX | 制造商:Pericom Semiconductor Corporation 功能描述:Bus Switch 2-Element CMOS 8-IN 20-Pin QSOP T/R |
| PI3B3245 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Digital Switch | 3.3V 8-Bit Bus Switch (FCT245 Pinout) |
| PI3B3245L | 制造商:PERICOM 制造商全称:Pericom Semiconductor Corporation 功能描述:3.3V, Hot Insertion 8-Bit, 2-Port, NanoSwitch |
| PI3B3245LE | 功能描述:数字总线开关 IC 3.3V 8B Bus Switch RoHS:否 制造商:Texas Instruments 开关数量:24 传播延迟时间:0.25 ns 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TSSOP-56 封装:Reel |
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