Datasheet PI5C3401P, PI5C3401Q, PI5C3401S Datasheet (PERICOM)

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PI5C3401

6-BIT, 3-PORT BUS

EXCHANGE SWITCH

Function S0 S1 A0–5 B0–5 C0–5

Disconnect H H Hi-Z Hi-Z Hi-Z
Connect A-B L L B0–5 A0–5 Hi-Z
Connect B-C H L Hi-Z C0–5 B0–5
Connect C-A L H C0–5 Hi-Z A0–5

Product Features:

• Nero propagation delay

•5Ω switches connect inputs to outputs

• Direct bus connection when switches are ON

• Ultra Low Quiescent Power (0.2µA Typical)
– Ideally suited for notebook applications

• Packages available:
– 24-pin 300 mil wide plastic DIP (P)
– 24-pin 150 mil wide plastic QSOP (Q)
– 24-pin 300 mil wide plastic SOIC (S)

Product Pin Configuration

Product Pin Description

Pin Name Description

S0, S1 Bus Direction
A0–5 Bus A
B0–5 Bus B
C0–5 Bus C
NC No Connect
GN D Ground
VCC Power

Truth Table

(1)

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PI5C3401

6-Bit, 3-Port Bus

Exchange Switch

Logic Block Diagram

Product Description:

Pioneer Semiconductor’s PI5C series of logic circuits are pro-duced
in the Company’s advanced 0.8 micron CMOS technology, achieving
industry leading performance.

The PI5C3401 is a 6-bit, 3-port bus exchange switch designed with
a low ON resistance (5Ω) allowing inputs to be connected directly
to outputs. The bus switch creates no additional propagational
delay or additional ground bounce noise. The switches are turned
OFF by S0 = H and S1 = H. The A bus can be connected to B bus by
S0 = L and S1 = L. The B bus can be connected to C bus by S0 = H and
S1 = L. The C bus can be connected to A bus by S0 = L and S1 = H.

B

0

A

0

C

0

B

5

A

5

C

5

DECODER

S

0

S

1

Note:

1 . H = High Voltage Level

L = Low Voltage Level
Hi-Z = High Impedance

24-PIN

P

Q

S

PI5C3401

6-BIT, 3-PORT BUS

EXCHANGE SWITCH

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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 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 .......................................................................... 120 mA

Power Dissipation................................................................................ 0.5W

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, TA = –40°C to +85°C, VCC = 5V ±5%)

Parameters Description Test Conditions

(1)

Min. Ty p

(2)

Max. Units

VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V
VIL Input LOW Voltage Guaranteed Logic LOW Level –0.5 0.8 V
IIH Input HIGH Current VCC = Max., VIN = VCC ±1 µA
IIL Input LOW Current VCC = Max., VIN = GND ±1 µA
IOZH High Impedance Output Current 0 ≤ A, B ≤ VCC ±1 µA
VIK Clamp Diode Voltage VCC = Min., IIN = –18 mA –0.7 –1.2 V
IOS Short Circuit Current

(3)

A (B) = 0V, B (A) = VCC 100 m A
VH Input Hysteresis at Control Pins 15 0 mV
RON Switch On Resistance

(4)

VCC = Min., VIN = 0.0V, ION = 48 mA 5 7 Ω

VCC = Min., VIN = 2.4V, ION = 15 mA 10 15

Capacitance (TA = 25°C, f = 1 MHz)

Parameters

(5)

Description Test Conditions Typ Max. Units

CIN Input Capacitance VIN = 0V 6 pF
COFF A/B Capacitance, Switch Off VIN = 0V 6 pF

CON A/B Capacitance, Switch On VIN = 0V 8 pF

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at Vcc = 5.0V, TA = 25°C ambient and maximum loading.

3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.

4. 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.

5. This parameter is determined by device characterization but is not production tested.

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PI5C3401

6-BIT, 3-PORT BUS

EXCHANGE SWITCH

Power Supply Characteristics

Parameters Description Test Conditions

(1)

Min. Typ

(2)

Max. Units

ICC Quiescent Power VCC = Max. VIN = GND or VCC 0.1 3.0 µA

Supply Current

∆ICC Supply Current per VCC = Max. VIN = 3.4V

(3)

2.5 m A

Input @ TTL HIGH

ICCD Supply Current per VCC = Max., 0.25 mA/

Input per MHz

(4)

A and B Pins Open MHz
BE = GND
Control Input Toggling
50% Duty Cycle

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.

2. Typical values are at Vcc = 5.0V, +25°C ambient.

3. Per TTL driven input (VIN = 3.4V, control inputs only); A and B pins do not contribute to Icc.

4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified
frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is
guaranteed by design.

Switching Characteristics over Operating Range

PI5C3401

Com.

Parameters Description Conditions

(1)

Min. Max. Unit

tPLH Propagation Delay

(2,3)

CL = 50 pF 0.25 n s

tPHL Ax to Bx, Bx to Cx RL = 500Ω

or Cx to Ax

tS Bus Direction Time 1.5 6.5 ns

SX to Ax or Bx or Cx

Notes:

1. See test circuit and waveforms.

2. This parameter is guaranteed but not tested on Propagation Delays.

3. 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 0.25 ns for 50 pF 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.

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax [phone] • http://www.pericom.com