Datasheet PI5C3384CP, PI5C3384CQ, PI5C3384CR, PI5C3384CS, PI5C3384P Datasheet (PERICOM)

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PI5B3384/3384C/32384 (25

ΩΩ

ΩΩ

Ω)

10-BIT, 2-PORT BusSwitch

Product Description:

Pericom Semiconductor’s PI5C series of logic circuits are pro­duced in the Company’s advanced sub-micron CMOS technology,
achieving industry performance.

The PI5C3384, PI5C3384C, and PI5C32384 are 10-bit, 2-port bus
switches designed with a low ON resistance 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 ON by the Bus Enable (BE) input signal. Two bus enable
signals are provided, one for each of the upper and lower five bits
of the two 10-bit buses. The PI5C32384 is designed with an internal
25Ω resistor reducing noise reflection in high-speed applications.

Product Pin Configuration

Product Pin Description

Pin Name Description

BEA, BEB Bus Enable Inputs (Active LOW)
A0-A9 Bus A
B0-A9 Bus B
GND Ground
VCC Power

Product Features:

• Near-zero propagation delay

• Low noise, 25Ω version (PI5C32384)

•5Ω switches connect inputs to outputs (PI5C3384)

• Direct bus connection when switches are ON

• Ultra-low quiescent power (0.2 µA typical)
– Ideally suited for notebook applications

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

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Function BEA BEB B0-B4 B5-B9

Disconnect H H Hi-Z Hi-Z
Connect L H A0-A4 Hi-Z
Connect H L Hi-Z A5-A9
Connect L L A0-A4 A5-A9

Truth Table

(1)

Logic Block Diagram

PI5C3384

PI5C3384C

PI5C32384 (25

ΩΩ

ΩΩ

Ω)

10-Bit, 2-Port BusSwitch

BE

B

BE

A

A

9

A

5

B

9

B

5

A

4

A

0

B

4

B

0

Note:

1. H = High Voltage Level
X = Don’t Care
L = Low Voltage Level
Hi-Z = High Impedance

1
2
3
4
5
6
7
8
9
10
11
12

24
23
22
21
20
19
18
17
16
15
14
13

BEA

B0
A0
A1
B1
B2
A2
A3
B3
B4
A4

GND

Vcc
B

9

A9
A8
B8
B7
A7
A6
B6
B5
A5
BEB

PPI5B3384/3384C/32384 (25

ΩΩ

ΩΩ

Ω)

10-BIT, 2-PORT BusSwitch

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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. Typ

(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 ——±1µA
IIL Input LOW Current VCC = Max., VIN = GND — — ±1 µA
IOZH High-Impedance Output Current 0 ≤ A, B ≤ VCC ——±1µA
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 — — mA
VH Input Hysteresis at Control Pins — 150 — m V
RON Switch On Resistance

(4)

VCC = Min., VIN = 0.0V, PI5C3384 — 5 7 Ω

ION = 48 mA PI5C3384C — 5 7

PI5C32384 20 28 40

VCC = Min., VIN = 2.4V, PI5C3384 — 10 1 5 Ω

ION = 15 mA PI5C3384C — 10 15

PI5C32384 20 35 48

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.

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

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PI5B3384/3384C/32384 (25

ΩΩ

ΩΩ

Ω)

10-BIT, 2-PORT BusSwitch

Power Supply Characteristics

Parameters Description Test Conditions

(1)

Min. Typ

(2)

Max. Units

ICC Quiescent Power VCC = Max., PI5C3384 — 0.1 3.0 µA

Supply Current VIN = GND or VCC PI5C32384

PI5C3384C — 60 100 µA

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

(3)

— — 2.5 mA

Input @ TTL HIGH

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

Input per MHz

(4)

A and B Pins Open MHz
BE1 or BE2 = GND
Control Input Toggling
50% Duty Cycle

PI5C3384/3384C Switching Characteristics over Operating Range

PI5C3384/3384C

Parameters Description Conditions

(1)

Min Typ Max Unit

tPLH Propagation Delay

(2,3)

CL = 50 pF — 0.25 — ns

tPHL Ax to Bx, Bx to Ax RL = 500

Ω

tPZH Bus Enable Time 1.5 — 6.5 ns
tPZL BEX to Ax or Bx
tPHZ Bus Disable Time 1.5 — 5.5 ns
tPLZ BEx to Ax or Bx

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.

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.

PPI5B3384/3384C/32384 (25

ΩΩ

ΩΩ

Ω)

10-BIT, 2-PORT BusSwitch

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PI5C32384

Parameters Description Conditions

(1)

Min Typ Max Unit

tPLH Propagation Delay

(2,3)

CL = 50 pF — 1.25 — ns

tPHL Ax to Bx, Bx to Ax RL = 500

Ω

tPZH Bus Enable Time 1.5 — 7.5 ns

tPZL BEX to Ax or Bx

tPHZ Bus Disable Time 1.5 — 5.5 ns

tPLZ BEx to Ax or Bx

PI5C32384 Switching Characteristics over Operating Range

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