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PI3B16224
3.3V, 12-Bit to 24-Bit
Demux/Mux BusSwitch
Product Features
•RON is 5Ω typical at 3.3V
• Low power: 10µW
• Industrial operating temperature: –40°C to +85°C
• Near zero propagation delay
• Fast switching speed: 4.5ns max.
• Vcc operating range: 3.0V to 3.6V
• 500 ohm pulldown to unconnected B port
• Series 25Ω resistor option on all outputs
• Make-before-break action
• Package:
– 40-pin mil wide plastic BQSOP (B)
Logic Block Diagram
Product Description
Pericom Semiconductors PI3B series of logic circuits are produced
using the Companys advanced 0.35 micron CMOS technology.
The PI3B16224 is a 3.3V, 12-bit to 24-bit mux/demux bus switch
designed with a low ON resistance allowing inputs to be connected
directly to outputs.
Product Pin Configuration
Truth Table
(1)
Function S1 A
A to 1B L 1B
A to 2B H 2B
40-Pin
B
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ....................................................... –65°C to +150°C
Ambient Temperature with Power Applied ...................... –40°C to +85°C
Supply Voltage Range........................................................–0.3V to +4.6V
DC Input Voltage ...............................................................–0.5V to +4.6V
DC Output Current .........................................................................120 mA
Power Dissipation............................................................................... 0.5W
PI3B16224
3.3V, 12-Bit to 24-Bit
Demux/Mux BusSwitch
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at these or any other conditions above those
indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
DC Electrical Characteristics (Over the Operating Range, T
= -40ºC to +85ºC, Vcc = 3.0 to 3.6V)
A
sretemaraPnoitpircseD)1(snoitidnoCtseT.niM.pyT
V
V
I
V
R
R
C
C
I
IH
I
IL
OZH
ON
ON
ON
I
CC
IH
IL
IK
IN
egatloVHGIHtupnIleveLhgiHcigoLdeetnarauG0.2
egatloVWOLtupnIleveLwoLcigoLdeetnarauG5.0-8.0
tnerruCHGIHtupnIV
tnerruCWOLtupnIV
egatloVedoiDpmalCV
ecnatsiseRnOhctiwSV,.niM=ccV
ecnatsiseRnOhctiwSV,.niM=ccV
ecnaticapaCtupnIV
ecnaticapaCB/AV
CC
CC
tnerruCtuptuOecnadepmIhgiH0≤ B,A ≤V
CC
IN
IN
V;.xaM=
INV=CC
V;.xaM=
IN
=DNG1±
CC
I,niM=
IN
IN
IN
Am81-=7.0-2.1-V
I,V0.0=
ON
I,V4.2=
ON
Am21=58
Am21=0151
zHM1=f,C°52,V0=0.3
zHM1=f,C°52,V0=0.52
tnecseiuQylppuSrewoP 01
Notes:
1. Typical values are shown at Vcc = 3.3V, +25°C ambient and maximum loading.
PI3B16224 Electrical Characteristics (T
= -40ºC to +85ºC, Vcc = 3.0 to 3.6V)
A
PI3B16224
Com.
Parameters Description Test Conditions Min. Max. Units
t
PLH Propagation Delay CL = 50pF RL = 500Ω
(1,2,3)
— 250 ps
Ax to xBx
PE Bus Enable CL = 50pF RL = 500Ω
t
PD Bus Disable CL = 50pF RL = 500Ω
t
M Make-before-break time CL = 50 pF RL = 500 Ω
t
(3)
(3)
(1)
1 4.5
1 5.0 ns
02
)2(
.xaMstinU
V
1±
µA
1±
Ω
Fp
µA
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load capacitance.
The time constant for the switch alone is of the order of 0.25ns for 50pF load. Since this time constant is much smaller than the rise/fall
times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used
in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
3. See test circuit and waveforms.
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Application Circuit
PI3B16224
3.3V, 12-Bit to 24-Bit
Demux/Mux BusSwitch
Memory Switching Application
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
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PS8181B 11/06/98
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