View IDT74FST163384_146153.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

20-BIT BUS SWITCH
IDT74FST163384 IDT74FST1632384 ADVANCE INFORMATION
Integrated Device Technology, Inc.
FEATURES:
* Bus switches provide zero delay paths * Extended commercial range of -40C to +85C * Low switch on-resistance: FST163xxx - 5 FST1632xxx -- 28 * TTL-compatible input and output levels * ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) * Available in SSOP, TSSOP and TVSOP
DESCRIPTION:
The FST163384/1632384 belong to IDT's family of Bus switches. Bus switch devices perform the function of connecting or isolating two ports without providing any inherent
current sink or source capability. Thus they generate little or no noise of their own while providing a low resistance path for an external driver. These devices connect input and output ports through an n-channel FET. When the gate-to-source junction of this FET is adequately forward-biased the device conducts and the resistance between input and output ports is small. Without adequate bias on the gate-to-source junction of the FET, the FET is turned off, therefore with no VCC applied, the device has hot insertion capability. The low on-resistance and simplicity of the connection between input and output ports reduces the delay in this path to close to zero. The FST1632xxx integrates terminating resistors in the device, thus eliminating the need for external 25 series resistors. The FST163384 and FST1632384 are 20-bit TTL-compatible bus switches. The BEx pins provide enable control.
FUNCTIONAL BLOCK DIAGRAM
A0 B0 A10 B10
A4
B4
A14
B14
A5
B5
A15
B15
A9 BEA BEB
B9
A19 BEC BED
B19
3473 drw 01
PIN DESCRIPTION
Pin Names A0-19 B0-19 I/O I/O I/O I Description Bus A Bus B Bus Switch Enable (Active LOW)
3473 tbl 01
BEA, BEB, BEC, BED,
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
(c)1997 Integrated Device Technology, Inc.
FEBRUARY 1997
DSC-3473/4
1
IDT74FST163384, IDT74FST1632384 20-BIT BUS SWITCH
COMMERCIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description VTERM(2) Terminal Voltage with Respect to GND TSTG Storage Temperature IOUT Maximum Continuous Channel Current Max. -0.5 to +7.0 -65 to +150 128 Unit V C mA
BEA B0 A0 A1 B1 B2 A2 A3 B3 B4 A4 GND BEC B5 A5 A6 B6 B7 A7 A8 B8 B9 A9 GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 SO48-1 SO48-2 SO48-3
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
Vcc B19 A19 A18 B18 B17 A17 A16 B16 B15 A15 BEB Vcc A14 B14 A13 B13 B12 A12 A11 B11 B10 A10 BED
3473 tbl 02 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 condiitions for extended periods may affect reliability.
2. VCC, Control and Switch terminals.
FUNCTION TABLE BEA BEB B0-4
H L H L H H L L Hi-Z A0-4 Hi-Z A0-4 B10-14 Hi-Z A10-14 Hi-Z A10-14
B5-9 Hi-Z Hi-Z A5-9 A5-9 B15-19 Hi-Z Hi-Z A15-19 A15-19
Description Disconnect Connect Connect Connect Description Disconnect Connect Connect Connect
3473 tbl 03
BEC
H L H L
BED
H H L L
CAPACITANCE(1)
Symbol CIN CI/O Parameter Control Input Capacitance Switch Input/Output Capacitance Switch Off Conditions(2) Typ. Unit 4
pF pF
3473 tbl 04
NOTES: 1. Capacitance is characterized but not tested 2. TA = 25C, f = 1MHz, VIN = 0V, VOUT = 0V
3473 drw 02
SSOP/ TSSOP/TVSOP TOP VIEW
2
IDT74FST163384, IDT74FST1632384 20-BIT BUS SWITCH
COMMERCIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Commercial: TA = -40C to +85C, VCC = 5.0V 10%
Symbol VIH VIL II H II L IOZH IOZL IOS VIK RON Parameter Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Voltage High Impedance Output Current (3-State Output pins) Short Circuit Current Clamp Diode Voltage Switch On Resistance(4) VCC = Max., VO = GND(3) 163xxx 1632xxx 163xxx 1632xxx VCC = Min., IIN = -18mA VCC = Min. VIN = 0.0V ION = 30mA VCC = Min. VIN = 2.4V ION = 15mA IOFF ICC Input/Output Power Off Leakage Quiescent Power Supply Current VCC = 0V, VIN or VO 4.5V VCC = Max., VIN = GND or VCC VCC = Max. Test Conditions(1) Guaranteed Logic HIGH for Control Inputs Guaranteed Logic LOW for Control Inputs VCC = Max. VI = VCC VI = GND VO = VCC VO = GND Min. 2.0 -- -- -- -- -- -- -- -- 20 -- 20 -- -- Typ.(2) -- -- -- -- -- -- 300 -0.7 5 28 10 35 -- 0.1 Max. -- 0.8 1 1 1 1 -- -1.2 7 40 15 48 1 3 A A
3473 tbl 05
Unit V V A A mA V
NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25C ambient. 3. Not more than one output should be tested at one time. Duration of the test should not exceed one second. 4. Measured by voltage drop between ports at indicated current through the switch.
3
IDT74FST163384, IDT74FST1632384 20-BIT BUS SWITCH
COMMERCIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol ICC ICCD Parameter Quiescent Power Supply Current TTL Inputs HIGH Dynamic Power Supply Current(4) Test Conditions(1) VCC = Max. VIN = 3.4V(3) VCC = Max. Outputs Open Enable Pin Toggling 50% Duty Cycle VCC = Max. Outputs Open Enable Pins Toggling (20 Switches Toggling) fi = 10MHz 50% Duty Cycle Min. -- -- Typ.(2) 0.5 30 Max. 1.5 40 Unit mA
VIN = VCC VIN = GND
A/ MHz/ Switch
mA
IC
Total Power Supply Current (6)
VIN = VCC VIN = GND VIN = 3.4 VIN = GND
--
6.0
8.0
--
7.0
11.0
NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25C ambient. 3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested. 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ICC DHNT + ICCD (fiN) ICC = Quiescent Current ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fi = Input Frequency N = Number of Switches Toggling at fi All currents are in milliamps and all frequencies are in megahertz.
3473 tbl 06
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Commercial: TA =-40C to +85C, VCC = 5.0V 10%
163384 Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ |QCI| Description Data Propagation Delay Ai to Bi, Bi to Ai(3,4) Switch Turn on Delay BEx to Ai, Bi Switch Turn off Delay BEx to Ai, Bi(3) Charge Injection (5,6) Condition(1) CL = 50pF RL = 500 Min.(2) -- 1.5 1.5 -- Typ. -- -- -- 1.5 0.25 6.5 5.5 -- Max. 1.25 7.5 5.5 -- 1632384 Unit ns ns ns pC
3473 tbl 07 NOTES: 1. See test circuit and waveforms. 2. Minimum limits guaranteed but not tested. 3. This parameter is guaranteed by design but not tested. 4. The bus switch contributes no propagation 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 2.5ns for 50pF load. Since this time is constant and much smaller than the rise/fall times of typical driving signals, it adds very little propagation delay to the system. Propagation delay on 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. 5. Measured at switch turn off, load = 50 pF in parallel with 10M scope probe, VIN = 0.0 volts. 6. Characterized parameter. Not 100% tested.
4
IDT74FST163384, IDT74FST1632384 20-BIT BUS SWITCH
COMMERCIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS TEST CIRCUITS FOR ALL OUTPUTS
VCC 500 VIN Pulse Generator RT D.U.T. 50pF CL 500 VOUT 7.0V
SWITCH POSITION
Test Open Drain Disable Low Enable Low All Other Tests Open
3473 lnk 08 DEFINITIONS: CL= Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Switch
Closed
3473 lnk 03
SET-UP, HOLD AND RELEASE TIMES
DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tSU 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V
3473 lnk 04
PULSE WIDTH
tH
LOW-HIGH-LOW PULSE tW HIGH-LOW-HIGH PULSE
1.5V
tREM
1.5V
tSU
tH
3473 lnk 05
PROPAGATION DELAY
3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V
3473 lnk 06
ENABLE AND DISABLE TIMES
ENABLE DISABLE 3V 1.5V tPZL OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED tPZH SWITCH OPEN 1.5V 0V 0V 3.5V 1.5V tPHZ 0.3V VOH tPLZ 0V 3.5V 0.3V VOL
SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL
CONTROL INPUT
3473 lnk 07 NOTES: 1. Diagram shown for input Control Enable-LOW and input Control DisableHIGH 2. Pulse Generator for All Pulses: Rate 1.0MHz; tF 2.5ns; tR 2.5ns
5
IDT74FST163384, IDT74FST1632384 20-BIT BUS SWITCH
COMMERCIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT XX FST 16 XX Temp. Range Device Type X Package
PV PA PF
Shrink Small Outline Package (SO48-1) Thin Shrink Small Outline Package (SO48-2) Thin Very Small Outline Package (SO48-3)
163384 1632384
20-Bit Bus Switch
74
-40C to +85C
3473 drw 08
6

▲Up To Search▲

Price & Availability of IDT74FST163384

	To Download IDT74FST163384 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .