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Part: 49FCT3805D
Category:
Timing Circuits
-> Clock management
Description: 3.3V CMOS Dual 1-to-5 Clock Driver
Company: Integrated Device Technology, Inc.
Datasheet: Download 49FCT3805D datasheet File size : 220 kB
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IDT49FCT3805D/E 3.3V CMOS DUAL 1-TO-5 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS DUAL 1-TO-5 CLOCK DRIVER
IDT49FCT3805D/E
· · · · · · · · · · · · ·
FEATURES:
DESCRIPTION:
Advanced CMOS Technology Guaranteed low skew < 200ps (max.) Very low propagation delay < 2.5ns (max) Very low duty cycle distortion < 270ps (max) Very low CMOS power levels Operating frequency up to 166MHz TTL compatible inputs and outputs Inputs can be driven from 3.3V or 5V components Two independent output banks with 3-state control 1:5 fanout per bank "Heartbeat" monitor output VCC = 3.3V ± 0.3V Available in SSOP and QSOP packages
The FCT3805 is a 3.3 volt clock driver built using advanced CMOS technology. The device consists of two banks of drivers, each with a 1:5 fanout and its own output enable control. The device has a "heartbeat" monitor for diagnostics and PLL driving. The MON output is identical to all other outputs and complies with the output specifications in this document. The FCT3805 offers low capacitance inputs. The FCT3805 is designed for high speed clock distribution where signal quality and skew are critical. The FCT3805 also allows single point-to-point transmission line driving in applications such as address distribution, where one signal must be distributed to multiple recievers with low skew and high signal quality.
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATION
VCCA
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCCB OB 1 OB 2 OB 3 GNDB OB 4 OB 5 MON OEB INB
OEA IN A 5 O A 1 - OA5
OA 1 OA 2 OA3 GNDA OA 4
IN B OEB
5
OA 5
O B 1 - OB5
GNDQ OEA
MON
INA
SSOP/ QSOP TOP VIEW
INDUSTRIAL TEMPERATURE RANGE
c 2002 Integrated Device Technology, Inc.
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
JANUARY 2002
1
DSC-5864/14
IDT49FCT3805D/E 3.3V CMOS DUAL 1-TO-5 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VCC VI VO TJ TSTG Description Input Power Supply Voltage Input Voltage Output Voltage Junction Temperature Storage Temperature Max 0.5 to +4.6 0.5 to +5.5 0.5 to VCC+0.5 150 65 to +165 Unit V V V °C °C
PIN DESCRIPTION
Pin Names OEA, OEB INA, INB OAn, OBn MON Clock Inputs Clock Outputs Monitor Output Description 3-State Output Enable Inputs (Active LOW)
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.
FUNCTION TABLE (1)
Inputs OEA, OEB L L H H INA, INB L H L H OAn, OBn L H Z Z Outputs MON L H L H
CAPACITANCE (TA = +25 C, f = 1.0MHz)
O
Symbol CI N COUT
Parameter(1) Input Capacitance Output Capacitance
Conditions VIN = 0V VOUT = 0V
Typ. 3 --
Max. 4 6
Unit pF pF
NOTE: 1. H = HIGH L = LOW Z = High-Impedance
NOTE: 1 . This parameter is measured at characterization but not tested.
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 VIH VIL IIH IIL IOZH IOZL VIK IODH IODL IOS VOH Parameter Input HIGH Level Input LOW Level Input HIGH Current Input LOW Current High Impedance Output Current (3-State Outputs Pins) Clamp Diode Voltage Output HIGH Current Output LOW Current Short Circuit Current Output HIGH Voltage VCC = Min., IIN = 18mA VCC = 3.3V, VIN = VIH or VIL, VO = VCC = 3.3V, VIN = VIH or VIL, VO = VCC = Max., VO = GND(3,4) VCC = Min. VIN = VIH or VIL VOL Output LOW Voltage VCC = Min. VIN = VIH or VIL IOH = 12mA IOH = 8mA IOH = 100µA IOL = 12mA IOL = 8mA IOL = 100µA 1.5V(3,4) 1.5V(3,4) VCC = Max. VCC = Max. VCC = Max. VI = 5.5V VI = GND VO = VCC VO = GND Test Conditions(1) Min. 2 0.5 -- -- -- -- -- 45 50 60 2.4(5) 2.4(5) VCC - 0.2 -- -- -- Typ.(2) -- -- -- -- -- -- 0.7 74 90 135 3 3 -- 0.3 0.2 -- Max. 5.5 0.8 ±1 ±1 ±1 ±1 1.2 180 200 240 -- -- -- 0.4 0.4 0.2 V V V mA mA mA µA Unit V 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 = 3.3V, 25°C ambient. 3 . Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4 . This parameter is guaranteed but not tested. 5 . VOH = Vcc -0.6V at rated current.
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IDT49FCT3805D/E 3.3V CMOS DUAL 1-TO-5 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol ICCL ICCH ICCZ ICC ICCD Power Supply Current per Input HIGH Dynamic Power Supply Current per Output(3) IC Total Power Supply Current(4) VCC = Max. VIN = VCC 0.6V VCC = Max. CL = 15pF All Outputs Toggling VCC = Max. CL = 15pF All Outputs Toggling fi = 133MHz VCC = Max. CL = 15pF All Outputs Toggling fi = 166MHz
NOTES: 1. 2. 3. 4. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. Typical values are at VCC = 3.3V, +25°C ambient. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ICC DHNT + ICCD (fONO) ICC = Quiescent Current (ICCL, ICCH and ICCZ) ICC = Power Supply Current for a TTL High Input (VIN = VCC -0.6V) 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) fO = Output Frequency NO = Number of Outputs at fO
Parameter Quiescent Power Supply Current VCC = Max.
Test Conditions(1) VIN = GND or VCC
Min. --
Typ.(2) 0.1
Max. 30
Unit µA
-- VIN = VCC VIN = GND VIN = VCC VIN = GND VIN = VCC 0.6V VIN = GND VIN = VCC VIN = GND VIN = VCC 0.6V VIN = GND -- -- -- -- --
45 80
300 120
µA µA/MHz
125 125 155 160
150 150 mA 195 195
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IDT49FCT3805D/E 3.3V CMOS DUAL 1-TO-5 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - 3805D (3,4)
Symbol tPLH tPHL tR tF tSK(O) tSK(P) tSK(PP) tPZL tPZH tPLZ tPHZ fMAX Parameter Propagation Delay INA to OAn, INB to OBn Output Rise Time (0.8V to 2V) Output Fall Time (2V to 0.8V) Same device output pin to pin skew(5) Pulse skew(6,9) Part to part skew(7) Output Enable Time OEA to OAn, OEB to OBn Output Disable Time OEA to OAn, OEB to OBn Input Frequency -- 133 MHz -- 5.2 ns Conditions(1) CL = 15pF f 133MHz -- -- -- -- -- -- 1.5 1.5 270 270 550 5.2 ns ns ps ps ps ns Min.(2) 1 Max. 3 Unit ns
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - 3805E (3,4)
Symbol tPLH tPHL tR tF tSK(O) tSK(P) tSK(PP) tPZL tPZH tPLZ tPHZ fMAX Parameter Propagation Delay INA to OAn, INB to OBn Output Rise Time (0.8V to 2V) Output Fall Time (2V to 0.8V) Same device output pin to pin skew(5) Pulse skew(6,9) Part to part skew(7) Output Enable Time OEA to OAn, OEB to OBn Output Disable Time OEA to OAn, OEB to OBn Input Frequency -- 166 MHz -- 5.2 ns Conditions(1,8) CL = 15pF f 166MHz -- -- -- -- -- -- 1 1 200 270 550 5.2 ns ns ps ps ps ns Min.(2) 0.5 Max. 2.5 Unit ns
NOTES: 1 . See test circuits and waveforms. 2 . Minimum limits are guaranteed but not tested on Propagation Delays. 3 . tPLH, tPHL, tSK(P), and tSK(O) are production tested. All other parameters guaranteed but not production tested. 4 . Propagation delay range indicated by Min. and Max. limit is due to VCC, operating temperature and process parameters. These propagation delay limits do not imply skew. 5 . Skew measured between all outputs under identical transitions and load conditions. 6 . Skew measured is difference between propagation delay times tPHL and tPLH of same outputs under identical load conditions. 7 . Part to part skew for all outputs given identical transitions and load conditions at identical VCC levels and temperature. 8 . Airflow of 1m/s is recommended for frequencies above 133MHz. 9 . This parameter is measured using f = 1MHz.
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IDT49FCT3805D/E 3.3V CMOS DUAL 1-TO-5 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
6V VCC O pen GND 500 V IN P u ls e G e n e rato r RT D .U .T RL CL 500 VOUT
Enable and Disable Time Circuit
VCC
IN P U T tP L H 1 tP H L1
3V 1 .5 V 0V VOH 1 .5 V VOL
V IN P u ls e G e n e rato r RT D .U .T RL
VOUT CL
OUTPU T 1 t S K (o ) OUTPU T 2 tP L H 2 tP H L2 tS K (o )
VOH 1 .5 V VOL
t S K ( o ) = |tPLH2 - tPLH1| or |tPHL2 - tPHL1|
CL = 15pF Test Circuit
Output Skew - tSK(O)
SWITCH POSITION
Test Disable Low Enable Low Disable High Enable High Switch 6V GND
TEST CONDITIONS
Symbol CL RT RL tR / tF VCC = 3.3V ±0.3V 15 ZOUT of pulse generator 33 1 (0V to 3V or 3V to 0V) Unit pF ns
DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. tR / tF = Rise/Fall time of the input stimulus from the Pulse Generator.
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