Datasheet PI5C3384AS, PI5C3384AP, PI5C3384AQ Datasheet (PERICOM)

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PS8390 06/04/99

Product Description

Pericom Semiconductors PI5C series of logic circuits are produced
using the Companys advanced submicron CMOS technology,
achieving industry performance.

The PI5C3384A is a 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.

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
 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 PDIP (P24)
 24-pin 150-mil wide plastic QSOP (Q24)
 24-pin 300-mil wide plastic SOIC (S24)

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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

PI5C3384A

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

24-Pin

P24

Q24

S24

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PI5C3384A

10-Bit, 2-Port BusSwitch

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 = –18mA — –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, 25Ω

ION = 48mA

VCC = Min., VIN = 2.4V, 7 1 2 Ω

ION = 15mA

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 Units

CIN Input Capacitance VIN = 0V 6 pF

COFF A/B Capacitance, Switch Off VIN = 0V 9 pF

CON A/B Capacitance, Switch On VIN = 0V 22 pF

Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not tested.)

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PI5C3384A

10-Bit, 2-Port BusSwitch

PI5C3384A

Parameters Description Conditions

(1)

Min. Max. Units

tPLH Propagation Delay

(2,3)

CL = 50pF — 0.25

tPHL Ax to Bx, Bx to Ax RL = 500Ω
tPZH Bus Enable Time 1.5 6.5 ns
tPZL BEX to Ax or Bx
tPHZ Bus Disable Time 1.5 5.5
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

0.25ns 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.

PI5C3384A Switching Characteristics Over Operating Range

Pericom Semiconductor Corporation

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

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