Bus Switch. PI5C16861C Datasheet

PI5C16861C Switch. Datasheet pdf. Equivalent

PI5C16861C Datasheet
Recommendation PI5C16861C Datasheet
Part PI5C16861C
Description 2-Port Bus Switch
Feature PI5C16861C; PI5C16861C PI5C162861C (25Ω)111222333444555666777888999000111222333444555666777888999000111222333444.
Manufacture Pericom Semiconductor
Datasheet
Download PI5C16861C Datasheet




Pericom Semiconductor PI5C16861C
PI5C16861C
PI5C162861C (25)111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222
20-Bit, 2-Port Bus Switch
Product Features
Near-zero propagation delay
5-ohm or 25−ohm switches connect inputs to outputs
Direct bus connection when switches are ON
32X384 function with flow through pinout
make board layout easier
Ultra-low quiescent power (105µA typical)
– ideally suited for notebook applications
Industrial operating temperature: –40°C to +85°C
Packages available:
– 48-pin 240-mil wide plastic TSSOP (A)
Product Description
Pericom Semiconductor’s PI5C series of Bus Switch circuits are
produced using the Company’s advanced submicron CMOS
technology, achieving industry leading speed.
The PI5C16861C is configured as a 20-bit, 2-port bus switch designed
with a low ON resistance (5 ohms) 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 (BEx) input signal.
The PI5C162861C 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
A0
A9
BE1
A10
A19
BE2
B0
B9
B10
B19
Product Pin Configuration
NC
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
GND
NC
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
GND
1 48
2 47
3 46
4 45
5 44
6 43
7 42
8 41
9 40
10 39
11 48-Pin 38
12 A 37
13 36
14 35
15 34
16 33
17 32
18 31
19 30
20 29
21 28
22 27
23 26
24 25
VCC
BE1
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
VCC
BE2
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
Truth Table(1)
Function
Disconnect
Connect
Notes:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
nBE
H
L
nA0-7
Hi-Z
nB0-7
Product Pin Description
Pin Name
I/O
S0-S2
I
xAx I/O
xBx I/O
1
Description
Select Inputs
Bus A
Bus B
PS8357D 05 /10/01



Pericom Semiconductor PI5C16861C
PI5C16861C
PI5C162861C
20-Bit, 2-Port Bus Switch1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ............................................................... –65°Cto+150°C
Ambient Temperature with Power Applied .............................. –40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) ......... –0.5Vto+7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ...... –0.5Vto+7.0V
DC Input Voltage .......................................................................–0.5Vto+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 de-
vice. This is a stress rating only and functional opera-
tion 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 ±10%)
Parameters
Description
Test Conditions(1)
Min.
VIH Input HIGH Voltage
Guaranteed Logic HIGH Level
VIL Input LOW Voltage
Guaranteed Logic LOW Level
IIH Input HIGH Current
VCC = Max., VIN = VCC
IIL Input LOW Current
VCC = Max., VIN = GND
IOZH High Impedance Output Current 0 IN, YN VCC
VIK Clamp Diode Voltage
VCC = Min., IIN = –18mA
IOS Short Circuit Current(3)
A(B) = 0V, B(A) = VCC
VH Input Hysteresis at Control Pins
RON Switch ON Resistance(4)
VCC = Min., VIN = 0.0V,
ION = 48mA
VCC = Min., VIN = 2.4V,
ION = 15mA
16861C
162861C
16861C
162861C
2.0
–0.5
—
—
—
—
100
—
—
20
—
20
Typ.(2) Max.
——
— 0.8
— ±1
— ±1
— ±1
— –1.8
——
150 —
59
28 40
10 15
35 48
Units
V
µA
V
mA
mV
Capacitance (TA = 25°C, f = 1 MHz)
Parameters
Description
Test Conditions
Typ Units
CIN
COFF
CON
Input Capacitance
A/B Capacitance, Switch Off
A/B Capacitance, Switch On
VIN =0V
VIN =0V
VIN =0V
6
6 pF
8
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.
2 PS8357D 05 /10/01



Pericom Semiconductor PI5C16861C
PI5C16861C
PI5C162861C
1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890122304-5B67i8t9,0122-3P45o67r8t9B01u21s23S45w67i8t9c0h12
Power Supply Characteristics
Parameters
Description
Test Conditions(1)
Min. Typ.(2) Max. Units
ICC
ICC
Quiescent Power
Supply Current
Quiescent Power
Input @ TTL HIGH
VCC = Max.
VCC = Max.
VIN = GND or VCC
VIN = 3.4V(3)
105 200 µA
2.5 mA
ICCD Supply Current per VCC = Max., A and B Pin Open
Input per MHz(4) BEx = GND, Control Input Toggling, 50% Duty Cycle
0.25 mA/
MHz
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.
PI5C16861 Switching Characteristics over Operating Range
Parameters
Description
Conditions(1)
tPLH Propagation Delay(2,3)
tPHL Ax to Bx, Bx to Ax
tPZH Bus Enable Time
tPZL BEx to Ax or Bx
tPHZ Bus Disable Time
tPLZ BEx to Ax or Bx
CL = 50pF
RL = 500
PI5C16861C
Com.
Min.
Max.
0.25
1.5 6.5
1.5 5.5
Units
ns
PI5C162861 Switching Characteristics over Operating Range
PI5C162861C
Parameters
Description
Conditions(1)
Com.
Units
tPLH Propagation Delay(2,3)
tPHL Ax to Bx, Bx to Ax
Min.
Max.
1.25
tPZH Bus Enable Time
tPZL BEx to Ax or Bx
CL = 50pF
RL = 500
1.5 6.5 ns
tPHZ Bus Disable Time
tPLZ BEx to Ax or Bx
1.5 5.5
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.
3 PS8357D 05 /10/01







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