Datasheet PI3B16209 Datasheet (PERICOM)

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PI3B16209

PI3B162209 (25

ΩΩ

Ω)

ΩΩ

3.3V, 18-Bit Bus Exchange Switch

Product Features

• Near-zero propagation delay

•5Ω switches connect inputs to outputs

• Fast Switching speed - 5ns (max.)

• Operating Range: 3.0V to 3.6V

• Industrial operating temperature: –40°C to +85°C

• Packages available:
– 48-pin 240-mil wide thin plastic TSSOP (A)
– 48-pin 300-mil wide plastic SSOP (V)

Product Description

Pericom Semiconductor’s PI3B series of logic circuits are produced
in the Company’s advanced 0.35 micron CMOS technology.

The PI3B16209 and PI3B162209 are 3.3 volt, 18-bit bus exchange
switches designed with a low ON resistance (5Ω) allowing inputs
to be connected directly to outputs. The devices operate as an 18-bit
bus switch or as a 9-bit exchanger, providing data exchange between
the four signal ports via the data select pins (S0-S2).

The PI5C162209 device has a built-in 25-ohm series resistor to
reduce noise resulting from reflections, thus eliminating the need
for an external terminating resistor.

Logic Block Diagram Product Pin Configuration

S

0

ONE OF NINE CHANNELS

1

B

1A1

1A2

1

1

B

2

FLOW CONTROL

S

0

S

1

S

2

Truth Table

Function S2 S1 S0 A1 A2

Disconnect L LLZZ
A1 to B1 L L H B1 Z
A1 to B2 L H L B2 Z
A2 to B1 L H H Z B1
A2 to B2 H L L Z B2
Disconnect H L H Z Z
A1 to B1, A2 to B2 H H L B1 B2
A1 to B2, A2 to B1 H H H B2 B1

Note:

1.H = High Voltage Level

L = Low Voltage Level
Z = High Impedance

GND

VCC

GND

GND

GND

Product Pin Description

Pin Name I/O Description

S0-S2 I Select Inputs
xAx I/O Bus A
xBx I/O Bus B

1A1

A

1

2A1

A

2

3A1
3A2

4A1

A

4
5

A
A

5

6A1
6

A
A

7
7

A

8A1

A

8
9

A
A

9

1
2

2

3
4
5

2

6
7
8
9
10

48-PIN

11
12
13
14

A, V

2
1
2

15
16
17

2
1

18

2

19
20
21

2

22
23

1

24

2

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25

S

1

S

2

1

B

1

B

2

1

B

1

2

B

2

2

GND

3

B

1

3B2

GND

4B1

B

2

4
5

B

1

B

2

5

GND

6B1

B

2

6
7

B

1

B

2

7

GND

8B1
8

B

2

B

1

9

B

2

9

1

PS8192B 11/09/98

PI3B16209/162209

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3.3V, 18-Bit Bus-Exchange Switch

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 .................................. –0°C to +85°C

Supply Voltage Range..................................................................–0.5V to +4.6V

DC Input Voltage .........................................................................–0.5V to +4.6V

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 = 3.0V to 3.6V)

Parameters Description Test Conditions

(1)

Min. Typ

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

(2)

Max. Units

VIK Clamp Diode Voltage VCC = Min., IIN = –18mA — -0.7 –1.2 V
RON Switch On Resistance

(3)

VCC = Min., VIN = 0.0V, 16209 — 5 8 Ω
ION = 48mA 162209 20 28 40
VCC = Min., VIN = 2.4V, 16209 — 10 15 Ω
ION = 15mA 162209 20 35 48

Capacitance (TA = 25°C, f = 1 MHz)

Parameters

CIN Input Capacitance VIN = 0V 3 pF
COFF A/B Capacitance, Switch Off VIN = 0V 14 pF

CON A/B Capacitance, Switch On VIN = 0V 30 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 = 3.3V, TA = 25°C ambient and maximum loading.

3. 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.

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

(4)

Description Test Conditions Typ Units

2

PS8192B 11/09/98

PI3B16209/162209

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3.3V, 18-Bit Bus-Exchange Switch

Power Supply Characteristics

Parameters Description Test Conditions

(1)

Min. Typ

ICC Quiescent Power VCC = Max. VIN = GND or VCC 10 µA

Supply Current

∆ICC Supply Current per VCC = Max. VIN = 3.0V

(3)

Input @ TTL HIGH

(2)

Max. Units

750 µA

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 = 3.3V, +25°C ambient.

3. Per TTL driven input (control input 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

Com.

Parameters Description Conditions

tPLH Propagation Delay
t

PHL Ax to Bx, Bx to Ax Rl = 500Ω 162209 1.25

t

PZH Bus Enable Time Cl = 50pF, R

t

PZL BE to Ax or Bx R = 500Ω

t

PHZ Bus Disable Time 1 5

t

PLZ BE to Ax or Bx

(2,3)

Cl = 50pF 16209 0.25

(1)

= 500Ω, 1 4.5 ns

L

Min. Max. Units

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

3

PS8192B 11/09/98