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PI5C16211
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24-Bit Bus Switch
Product Features
• Near-zero propagation delay
•5Ω switches connect inputs to outputs
• Direct bus connection when switches are ON
• Ultra-low quiescent power (0.2 µA typical) – Ideally
suited for notebook applications
• Industrial operating temperature: –40°C to +85°C
Product Description
Pericom Semiconductor’s PI5C series of logic circuits are produced
using the Company’s advanced 0.6 micron CMOS technology.
The PI5C16211 is a 24-bit bus switch designed with a low ON
resistance allowing inputs to be connected directly to outputs. This
device operates as a 24-bit or a 12-bit bus switch, which provides
high speed bus switching.
• Packages available:
– 56-pin 173-mil wide plastic TVSOP (K)
– 56-pin 240-mil wide thin plastic TSSOP (A)
– 56-pin 300-mil wide plastic SSOP (V)
Logic Block Diagram
1A1
1A12
1OE
2A1
2A12
2OE
Truth Table
EO1EO2sO/IB1,A1sO/IB2,A2
LL B1=A1B2=A2
LH B1=A1Z
HL Z B2=A2
HH Z Z
Note: 1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
1B1
1B12
2B1
2B12
Product Pin Configuration
NC
1A1
1A2
1A3
1A4
1A5
1A6
GND
1A7
1A8
1A9
1A10
1A11
1A12
2A1
2A2
56-Pin
A, K,V
VCC
2A3
GND
2A4
2A5
2A6
2A7
2A8
2A9
2A10
2A11
2A12
Product Pin Description
Pin Name I/O Description
S0-S2 I Select Inputs
xAx I/O Bus A
xBx I/O Bus B
1
1OE1
2OE
1B1
1B2
1B3
1B4
1B5
GND
1B6
1B7
1B8
1B9
1B10
1B11
1B12
2B1
2B2
2B3
GND
2B4
2B5
2B6
2B7
2B8
2B9
2B10
2B11
2B12
PS7050B 12/09/99

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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
PI5C16211
24-Bit Bus Switch
Storage Temperature....................................................................–65°C to +150°C
Ambient Temperature with Power Applied ....................................–40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) ..............–0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only)...........–0.5V to +7.0V
DC Input Voltage ............................................................................–0.5V to +7.0V
DC Output Current......................................................................................120mA
Power Dissipation ..........................................................................................1.4W
DC Electrical Characteristics (Over the Operating Range, T
= –40°C to +85°C, VCC = 5V ±10%)
A
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.
Parameters Description Test Conditions Min. Typ
V
IK
I
I
Clamp Diode Voltage VCC = 4.5V, II = –18mA — — –1.2 V
Input LOW Current VCC = 5.5V, VI = VCC or GND — — 10
VCC = 0V, VI = 5.5V — — ±1 µA
I
∆I
CC
CC
Quiescent Power Supply Current V
= 5.5V, VI = VCC or GND — — 3. 0
CC
Supply Current per Control Input VCC = 5.5V, One input at 3.4V, — — 2. 5 m A
@ TTL High other inputs at VCC or GND
(2)
C
I
CIO(OFF)
R
ON
Control Input Capacitance VI = 3V or 0 — 4 .5 —
(2)
A/B Switch OFF Capacitance VO = 3V or 0, OE = V
Switch On Resistance
(3)
VCC = 4.0V, VI = 2.4V, II = 15 mA — 14 20
CC
— 5.5 —
VCC = 4.5V, VI = 0V, II = 64 mA — 5 7
VCC = 4.5V, VI = 0V, II = 30 mA — 5 7
(1)
Ma x. Units
pF
Ω
VCC = 4.5V, VI = 2.4V, II = 15 mA — 8 1 2
Notes:
1 . Typical values are at VCC = 5.0V, TA = 25°C ambient and maximum loading.
2. This parameter is determined by device characterization but is not production tested.
3. Measured by the voltage drop between A and B pin at indicated current through the switch.
ON resistance is determined by the lower of the voltages on the two (A,B) pins.
2
PS7050B 12/09/99

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Power Supply Characteristics
sretemaraPnoitpircseD.niMpyT
PI5C16211
24-Bit Bus Switch
)1(
.xaMstinU
V
CC
V
HI
V
LI
T
A
egatloVylppuS0.45.5V
egatloVtupnIleveLhgiH0.2V
egatloVtupnIleveLwoL8.0V
pmetriA-eerFgnitarepO04-58C°
Note:
1 . Typical values are at VCC = 5.0V, +25°C ambient.
Switching Characteristics over Operating Range
V
morF
sretemaraP
)1(
t
DP
NE
t
SID
)TUPNI(
BroAAroB
EOBroA9.33.9
EOBroA3.35.8
oT
)TUPTUO(
R
tseT
snoitidnoC
C
L
L
Fp05=
005= Ω
CC
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays. 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.
V5.0±V5=V
52.0
V4=
CC
52.0
1.01
1.7
stinU.niM.xaM.niM.xaM
snt
Ordering Information
traPegakcaP-niPerutarepmeT
A11261C5IP)A(POSST-65C°58+otC°04
K11261C5IP)K(POSST-65C°58+otC°04
V11261C5IP)V(POSST-65C°58+otC°04
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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PS7050B 12/09/99