OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

QS32245QG8

P1-P3P4-P5
1
IDTQS32245
HIGH-SPEED CMOS QUICKSWITCH 8-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
FEBRUARY 2011
2011 Integrated Device Technology, Inc. DSC-5748/5c
IDTQS32245
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH
®
PRODUCTS
HIGH-SPEED CMOS
QUICKSWITCH
8-BIT BUS SWITCH
DESCRIPTION:
The QS32245 provides a set of eight high-speed CMOS TTL-compatible
bus switches in a pinout compatible with 74FCT245, 74F245, 74ALS/AS/
LS245 8-bit transceivers. The Output Enable (OE) signal turns the switches
on similar to the OE signal of the 74’245. The QS32245 has 25Ω series
resistors to reduce ground bounce noise.
QuickSwitch devices provide an order of magnitude faster speed than
conventional logic devices.
The QS32245 is characterized for operation at -40°C to +85°C.
B0
OE
A0
B1
A1
B2
A2
B3
A3
B4
A4
B5
A5
B6
A6
B7
A7
FUNCTIONAL BLOCK DIAGRAM
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FEATURES:
• Enhanced N channel FET with no inherent diode to Vcc
•5
ΩΩ
ΩΩ
Ω bidirectional switches connect inputs to outputs
• Pin compatible with the 74F245, 74FCT245, and 74FCT245T
• Low power CMOS proprietary technology
• Zero propagation delay, zero ground bounce
• Undershoot clamp diodes on all switch and control inputs
•25
ΩΩ
ΩΩ
Ω resistors for low noise
• TTL-compatible control inputs
• Available in QSOP and TSSOP packages
APPLICATIONS:
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Power conservation
• Capacitance reduction and isolation
• Logic replacement (data processing)
• Clock gating
• Bus switching and isolation
2
INDUSTRIAL TEMPERATURE RANGE
IDTQS32245
HIGH-SPEED CMOS QUICKSWITCH 8-BIT BUS SWITCH
PIN CONFIGURATION
QSOP/ TSSOP
TOP VIEW
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
A
0
GND
V
CC
OE
A
1
A
2
A
3
A
4
A
5
A
6
A
7
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
FUNCTION TABLE
(1)(1)
(1)(1)
(1)
OE Outputs
H Disconnected
L An = Bn
PIN DESCRIPTION
Pin Names Description
OE Output Enable
An Data I/Os
Bn Data I/Os
CAPACITANCE
(TA = +25°C, f = 1.0MHZ, VIN = 0V, VOUT = 0V)
NOTE:
1. This parameter is measured at characterization but not tested.
Pins Typ. Max.
(1)
Unit
Control Pins 3 5 pF
Quickswitch Channels (Switch OFF) 5 7 pF
Symbol Description Max Unit
VTERM
(2)
Supply Voltage to Ground –0.5 to +7 V
VTERM
(3)
DC Switch Voltage Vs –0.5 to +7 V
VTERM
(3)
DC Input Voltage VIN –0.5 to +7 V
VAC AC Input Voltage (pulse width ≤ 20ns) –3 V
IOUT DC Output Current 120 mA
PMAX Maximum Power Dissipation (TA = 85°C) 0.5 W
T
STG Storage Temperature –65 to +150 °C
ABSOLUTE MAXIMUM RATINGS
(1)
NOTE:
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.
3
IDTQS32245
HIGH-SPEED CMOS QUICKSWITCH 8-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
RON
(ohms)
VIN
(Volts)
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
80
70
60
50
40
30
20
10
0
0.0 0.5
1.0
1.5 2.0 2.5 3.0 3.5
Symbol Parameter Test Conditions Min. Typ.
(1)
Max. Unit
VIH Input HIGH Level Guaranteed Logic HIGH for Control Pins 2 — — V
VIL Input LOW Level Guaranteed Logic LOW for Control Pins — — 0.8 V
IIN Input LeakageCurrent (Control Inputs)
(2)
0V ≤ VIN ≤ VCC —— ±1 μA
IOZ Off-State Output Current (Hi-Z) 0V ≤ VOUT ≤ VCC, Switches OFF — ±0.001 ±1 μA
R
ON
(3)
Switch ON Resistance VCC = Min., VIN = 0V, ION = 30mA 18 23 35 Ω
VCC = Min., VIN = 2.4V, ION =15mA 18 25 40
VP Pass Voltage
(2)
VIN = VCC = 5V, IOUT = -5μA 3.7 4 4.2 V
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%
NOTES:
1. Typical values are at V
CC = 5.0V, TA = 25°C.
2. Pass Voltage is guaranteed but not production tested.
3. R
OUT changed on March 8, 2002. See rear page for more information.
P1-P3P4-P5

QS32245QG8

Mfr. #:
Buy QS32245QG8
Manufacturer:
IDT
Description:
Digital Bus Switch ICs BUF WITH RESISTOR QSW
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet