IDT IDTQS3VH2861 User Manual
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IDTQS3VH2861
2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH SWITCH
2.5V / 3.3V 10-BIT FLOW-THROUGH
PIN OUT, HIGH BANDWIDTH SWITCH
FEA TURES:
• N channel FET switches with no parasitic diode to VCC
– Isolation under power-off conditions
– No DC path to VCC or GND
– 5V tolerant in OFF and ON state
• 5V tolerant I/Os
• Flat RON characteristics over operating range
• Rail-to-rail switching 0 - 5V
• Bidirectional dataflow with near-zero delay: no added ground
bounce
• Excellent RON matching between channels
•VCC operation: 2.3V to 3.6V
• High bandwidth
• LVTTL-compatible control Inputs
• Undershoot Clamp Diodes on all switch and control Inputs
• Low I/O capacitance, 4pF typical
ΩΩ
•25
Ω resistors for low noise and line matching
ΩΩ
• Available in QSOP and TSSOP packages
DESCRIPTION:
The QS3VH2861 HotSwitch is a high bandwidth bus switch with 10-bit
flow-though pin out. The QS3VH2861, with 25Ω ON resistance and 1.35ns
propagation delay, is ideal for line matching and low noise environments.
The switches are controlled by active low enable (BE) control. In the ON
state, the switches can pass signals up to 5V. In the OFF state, the switches
offer very high impedence at the terminals.
The combination of small propagation delay, high OFF impedance, and
over-voltage tolerance makes the QS3VH2861 ideal for high performance
communications applications.
The QS3VH2861 is characterized for operation from -40°C to +85°C.
INDUSTRIAL TEMPERATURE RANGE
IDTQS3VH2861QUICKSWITCH® PRODUCTS
APPLICA TIONS:
• Hot-swapping
• Low distortion analog switch
• Replaces mechanical relay
• ATM 25/155 switching
FUNCTIONAL BLOCK DIAGRAM
A0
A9
B0
B9
BE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
2002 Integrated Device Technology, Inc. DSC-5897/8c
AUGUST 2002
1
IDTQS3VH2861
2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
A0
A
A
2
4 B3
6
QSOP/ TSSOP
TOP VIEW
24NC VCC1
23
BE
223A1 B0
214A2 B1
205A3
B2
196
187A5
B4
178
B5
169A7 B6
B7
1510A8
1411A9
B8
B
13GND 12
ABSOLUTE MAXIMUM RATINGS
Symbol Description Max Unit
(2)
VTERM
VTERM
VTERM
VAC AC Input Voltage (pulse width ≤20ns) – 3 V
IOUT DC Output Current (max. sink current/pin) 120 mA
T
STG Storage Temperature –65 to +150 °C
NOTES:
1. Stresses greater than those listed under ABSOLUTE 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.
2. VCC terminals.
3. All terminals except V
9
CAPACIT ANCE (TA = +25°C, F = 1MHz, VIN = 0V , VOUT = 0V)
Symbol Parameter
CIN Control Inputs 3 5 pF
CI/O Quickswitch Channels (Switch OFF) 4 6 pF
C
I/O Quickswitch Channels (Switch ON) 8 12 pF
NOTE:
1. This parameter is guaranteed but not production tested.
SupplyVoltage to Ground –0.5 to +4.6 V
(3)
DC Switch Voltage VS –0.5 to +5.5 V
(3)
DC Input Voltage VIN –0.5 to +5.5 V
CC .
(1)
Typ. Max. Unit
(1)
PIN DESCRIPTION
Pin Names Description
BE Active LOW Bus Enable
A0 - A9 Bus A
B
0 - B9 Bus B
FUNCTION TABLE
BE A0 - A9 Function
H Z Disconnect
LB
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedence
(1)
0 - B9 Connect
2
IDTQS3VH2861
2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH SWITCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 3.3V ±0.3V
Symbol Parameter Test Conditions Min. Typ.
VIH Input HIGH Voltage Guaranteed Logic HIGH VCC = 2.3V to 2.7V 1.7 — — V
for Control Inputs VCC = 2.7V to 3.6V 2 — —
VIL Input LOW Voltage Guaranteed Logic LOW VCC = 2.3V to 2.7V — — 0 .7 V
for Control Inputs VCC = 2.7V to 3.6V — — 0. 8
IIN Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ VCC ——±1µA
IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ 5V, Switches OFF — — ±1 µ A
IOFF Data Input/Output Power Off Leakage VIN or VOUT 0V to 5V, VCC = 0V — — ±1 µA
VCC = 2.3V VIN = 0V ION = 30mA 1 8 27 39
RON Switch ON Resistance Typical at VCC = 2.5V VIN = 1.7V ION = 15mA 18 28 41 Ω
VCC = 3V VIN = 0V ION = 30mA 1 8 25 38
VIN = 2.4V ION = 15mA 18 26 40
NOTE:
1. Typical values are at VCC = 3.3V and T A = 25°C.
(1)
Max. Unit
TYPICAL ON RESIST ANCE vs VIN AT VCC = 3.3V
40
35
30
RON
(ohms)
25
20
15
10
5
0
0
0.5 1.5 2.5
12
VIN
(Volts)
34
3.5
4.5
5
3
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