Datasheet PI5C162214A, PI5C162214V, PI5C16214A, PI5C16214V Datasheet (PERICOM)

1

PS7040A 04/23/99

Function S2 S1 S0 A1

Disconnect L L L Z
A1 to B1 L L H B1
A1 to B2 L H L B2
Disconnect L H H Z
Disconnect H L L Z
A1 to B3 H L H B3
A1 to B1 H H L B1
A1 to B2 H H H B2

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Truth Table

(1)

Note:

1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance

Pin Name I/O Description

SO-S2 I Select Inputs

xAx I/O Bus A
xBx I/O Bus B

Product Pin Description

Product Pin Configuration

PI5C16214

PI5C162214 (25

ΩΩ

ΩΩ

Ω)

12-Bit, 3-To-1 Bus-Select Switch

Features

• Near-zero propagation delay

•5Ω switches connect inputs to outputs

• Direct bus connection when switches are ON

• Ultra-low quiescent power (0.2µA typical)

– ideally suited for notebook applications

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

• Packages available:

– 56-pin 240-mil wide plastic TSSOP (A)
– 56-pin 300-mil wide plastic SSOP (V)

Product Description

Pericom Semiconductors PI5C series of BusSwitch circuits
are produced in the Companys advanced 0.8 micron CMOS
technology, achieving industry leading speed.

The PI5C16214 and PI5C162214 are 3-to-1 bus-select switches

designed with a low ON resistance (5Ω) allowing inputs to be

connected directly to outputs. These devices operate as 12-bit bus
switches via the data select pins (S0-S2).

The PI5C162214 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

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34

33
25
26
27
28

S

0

1

A

1

1

B

3

2

A

1

2

B

3

3

A

1

3

B

3

GND

4

A

1

4

B

3

5

A

1

5

B

3

6

A

1

6

B

3

7

A

1

7

B

3

V

CC

8

A

1

GND

8B3
9

A

1

9

B

3

10

A

1

10

B

3

11

A

1

11

B

3

12

A

1

12

B

3

S

1

S

2

1

B

1

1

B

2

2

B

1

2

B

2

3

B

1
GND
3

B

2
4

B

1
4

B

2
5

B

1
5

B

2
6

B

1
6

B

2
7

B

1
7

B

2
8

B

1

GND

8B2
9

B

1
9

B

2
10

B

1

10

B

2

11

B

1

11

B

2

12

B

1

12

B

2

32
31
30
29

56-Pin

A, V

1A1

1

B

3

S

0

S

1

S

2

ONE OF TWELVE CHANNELS

1B2

1

B

1

FLOW CONTROL

2

PS7040A 04/23/99

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PI5C16214/162214

3-to-1 Bus-Select 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 ........................... –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 ............................................................................... 120mA

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 = 4 to 5V)

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
II Input Current VCC = 5.5V., VIN = 5.5V OR GND — — ±1 µA

VCC = 0V, VIN = VCC ——±1µA

IOZH High Impedance Output Current 0 ≤A, B ≤VCC ——10µA
VIK Clamp Diode Voltage VCC = 4.5V, 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 — mV
RON Switch On Resistance

(4)

VCC = 4.5V, VIN = 0.0V, 16214 — 5 7 Ω

ION = 30mA, 64mA 162214 20 28 40

VCC = 4.5V, VIN = 2.4V, 16214 — — 15 Ω

ION = 15mA 162214 20 35 48

VCC = 4 V, VIN = 2.4V, 16214 — 14 20 Ω

ION = 15mA

Capacitance (TA = 25°C, f = 1 MHz)

Parameters

(5)

Description Test Conditions Typ Units

CIN Input Capacitance VIN = 0V or 3V 4.5 pF

COFF A/B Capacitance, Switch Off VIN = 0V or 3V 5.5 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 = 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.

PI5C16214/162214

3-to-1 Bus-Select Switch

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PS7040A 04/23/99

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Power Supply Characteristics

Parameters Description Test Conditions

(1)

Min. Typ

(2)

Max. Units

ICC Quiescent Power VCC = Max. VIN = GND or VCC 0.1 10 µA

Supply Current

∆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
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 = 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.

PI5C16214

Vcc = 5V ±0.5V

Parameters Description Conditions

(1)

Min. Max. Units

tPLH Propagation Delay

(2,3)

CL = 50pF 0.25

t

PHL Ax to Bx, Bx to Ax RL = 500Ω

t

PZH Bus Enable Time 1.5 6.5 ns

t

PZL XOE to Ax or Bx

t

PHZ Bus Disable Time 1.5 5.5

t

PLZ XOE to Ax or Bx

Pericom Semiconductor Corporation

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

PI5C162214

Vcc = 5V ±0.5V

Parameters Description Conditions

(1)

Min. Max. Units

tPLH Propagation Delay

(2,3)

CL = 50pF 1.25

t

PHL Ax to Bx, Bx to Ax RL = 500Ω

t

PZH Bus Enable Time 1.5 6.5 ns

t

PZL XOE to Ax or Bx

t

PHZ Bus Disable Time 1.5 5.5

t

PLZ XOE to Ax or Bx

PI5C16214 Switching Characteristics over Operating Range

PI5C162214 Switching Characteristics over Operating Range