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PI5C16225C

Low Capacitance 12-Bit-to-24-Bit Mux/Demux Bus Switch

Pericom Semiconductor 

PI5C16225C

Low Capacitance 12-Bit to 24-Bit,

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Power Supply Characteristics

Parameters Description

ICC

Quiescent Power

Supply Current

∆ICC

Supply Current per

Input @ TTL HIGH

ICCD

Supply Current per

Input per MHz(4)

Test Conditions(1)

VCC = Max.

VIN = GND or VCC

Min. Typ(2) Max. Units

— — 200 µA

VCC = Max.

VIN = 3.4V(3)

—

other pin=VCC or GND

VCC = Max.,

—

A and B Pins Open

Control Input Toggling

50% Duty Cycle

— 2.5 mA

— 0.25 mA/

MHz

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.

5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.

Switching Characteristics over Operating Range

Parameters Description

Conditions(1) Min.

PI516225C

Com.

Typ.

Max.

Units

tPLH

Propagation Delay(2,3) CL = 25pF

—

—

0.5

tPHL

A to B

RL = 500Ω

tPZH

Bus Enable Time

1.3

3.0

4.5 ns

tPZL

SEL TO A,B

tPHZ

Bus Disable Time

1.3

3.0

4.5

tPLZ

SEL to A,B

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 0.25ns

for 25pF 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.

Ordering Information

Part

Pin - Package

PI5C16225CA 56-TSSOP (A56)

Width

240-mil

Temperature

–40°C to +85°C

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com

3

PS8389A 08/31/99

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