Document
IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH
IDTQS3VH16212
FEATURES:
• 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
• Low RON - 4Ω typical • 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 - up to 500 MHz
• LVTTL-compatible control Inputs
• Undershoot Clamp Diodes on all switch and control Inputs
• Low I/O capacitance, 4pF typical
• Available in TSSOP package
DESCRIPTION:
The QS3VH16212 Bus Exchange HotSwitch with 24-bits is a high bandwidth bus switch. The QS3VH16212 has very low ON resistance, resulting in under 250ps propagation delay through the switch. The device operates as a 24-bit bus switch or a 12-bit bus exchanger, which provides data exchanging between the four signal ports through the data-select (S0 - S2) terminals. In the OFF and ON states, the switches are 5V-tolerant. In the OFF state, the switches offer very high impedence at the terminals.
The combination of near-zero propagation delay, high OFF impedance, and over-voltage tolerance makes the QS3VH16212 ideal for high performance communications applications.
The QS3VH16212 is characterized for operation from -40°C to +85°C.
APPLICATIONS:
• Hot-swapping • 10/100 Base-T, Ethernet LAN switch • Low distortion analog switch • Replaces mechanical relay • ATM 25/155 switching
FUNCTIONAL BLOCK DIAGRAM
1 of 12 Channels
1A1
1B1
1A2
Flow Control S0 S1 S2
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE 1
c 2013 Integrated Device Technology, Inc.
1B2
JANUARY 2013
DSC-5884/8
IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
S0
1
56
1A1
2
55
1A2
3
54
2A1
4
53
2A2
5
52
3A1
6
51
3A2
7
50
GND
8
49
4A1
9
48
4A2
10
47
5A1
11
46
5A2
12
45
6A1
13
44
6A2
14
43
7A1
15
42
7A2
16
41
VCC
17
40
8A1
18
39
GND
19
38
8A2
20
37
9A1
21
36
9A2
22
35
10A1
23
34
10A2
24
33
11A1
25
32
11A2
26
31
12A1
27
30
12A2
28
29
TSSOP TOP VIEW
S1 S2 1B1 1B2 2B1 2B2 3B1 GND 3B2 4B1 4B2 5B1 5B2 6B1 6B2 7B1 7B2 8B1 GND 8B2 9B1 9B2 10B1 10B2 11B1 11B2 12B1 12B2
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
Max.
Unit
VTERM(2) Supply Voltage to Ground
– 0.5 to 4.6
V
VTERM(3) DC Switch Voltage VS
– 0.5 to 5.5
V
VTERM(3) DC Input Voltage VIN
– 0.5 to 5.5
V
VAC AC Input Voltage (pulse width ≤20ns)
–3
V
IOUT DC Output Current (max. current/pin)
120
mA
TSTG StorageTemperature
-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 VCC.
CAPACITANCE (TA = +25oC, f = 1MHz, VIN = 0V, VOUT = 0V)
Symbol Parameter(1)
Typ. Max. Unit
CIN ControlInputs
3
5
pF
CI/O Quickswitch Channels (Switch OFF) 6
8
pF
CI/O
Quickswitch Channels (Switch ON)
12
16
pF
NOTE:
1. This parameter is guaranteed but not production tested.
PIN DESCRIPTION
Pin Names
I/O
Description
1Ax - 12Ax
I/O
Bus A
1Bx - 12Bx
I/O
Bus B
S0 - S2
I
Data Select
FUNCTION TABLE(1)
S2 S1
S0 xA1 xA2
L
L
L
Z
Z
L
L
H xB1
Z
LH
L xB2
Z
LH
H
Z xB1
H
L
L
Z xB2
H
L
H
Z
Z
HH
L xB1 xB2
HH
H xB2 xB1
NOTE: 1. H = HIGH Voltage Level
L = LOW Voltage Level Z = High-Impedence
Function Disconnect xA1 to xB1 xA1 to xB2 xA2 to xB1 xA2 to xB2 Disconnect xA1 to xB1, xA2 to xB2 xA1 to xB2, xA2 to xB1
2
IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE(1)
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 3.3V ± 0.3V
Symbol Parameter
Test Conditions
Min.
Typ.(1) Max. Unit
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 HIGH
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
—
—
±1
μA
IOZ
Off-State Current (Hi-Z)
0V ≤ VOUT ≤ 5V, Switches OFF
—
—
±1
μ.