PI3C16226B Просмотр технического описания (PDF) - Pericom Semiconductor

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PI3C16226B

3.3V, High-Bandwidth, 12-Bit to 24-Bit, Mux/Demux Bus Switch

Pericom Semiconductor 

PI3C16226

3.3V, High Bandwidth, 12-Bit to 24-Bit,

Mux/Demux Bus Switch 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122

Power Supply Characteristics

Parameters

Description

ICC

Quiescent Power Supply Current

∆ICC

Supply Current per Input @ TTL HIGH

Test Conditions(1)

VCC = Max., VIN = GND or VCC

VCC = Max., VIN = 3.0V(3)

Min.

—

—

Typ.(2) Max. Units

260 850 µA

— 750

Notes:

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

2. Typical values are at VCC = 3.3V, +25°C ambient.

3. Per TTL driven input (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.

PI3C16226 Switching Characteristics Over Operating Range

Parameters

tPLH

tPHL

tPZH

tPZL

tPHZ

tPLZ

Description

Propogation Delay(2,3)

Ax to Bx, Bx to Ax

Bus Enable Time

SEL to Ax or Bx

Bus Disable Time

SEL to Ax or Bx

Conditions(1)

CL = 25pF

RL = 500Ω

CL = 25pF

RL = 500Ω

R = 500Ω

Com.

Min.

Max.

—

0.5

1.3

6.5

1.3

5.5

Units

ns

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 0.5ns 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.

3

PS8457D 03/13/01

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