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INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
MAY 2010
2010 Integrated Device Technology, Inc. DSC 6177/20c
INDUSTRIAL TEMPERATURE RANGE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FEATURES:
• High performance 1:5 clock driver for general purpose applica-
tions
• Operates up to 170MHz at VDD = 2.5V
• Operates up to 200MHz at VDD = 3.3V
• Pin-to-pin skew < 75ps at 3.3V operation
•VDD range: 2.3V to 3.6V
• Output enable glitch suppression
• Available in TSSOP and VFQFPN packages
FUNCTIONAL BLOCK DIAGRAM
IDT5V2305
2.5V TO 3.3V HIGH
PERFORMANCE CLOCK
BUFFER
DESCRIPTION:
The IDT5V2305 is a high performance, low skew clock buffer that
operates up to 200MHz. One bank of five outputs provides low skew copies
of CLK. Through the use of control pin G, the outputs of bank Y(0:4) can
be placed in a low state regardless of CLK input. The device operates in
2.5V and 3.3V environments. The built-in output enable glitch suppression
ensures a synchronized output enable sequence to distribute full period
clock signals.
The IDT5V2305 is characterized for operation from -40°C to +85°C.
Control Logic
3
5
6
11
13
Y0
Y1
Y2
Y3
Y4
16
9
CLK
G
2
INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
PIN CONFIGURATION
TSSOP
TOP VIEW
GND
VDD
Y1
Y0
Y2
GND
CLK
VDD
Y4
VDD
GND
Y3
VDD
G
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GND
VDD
CAPACITANCE(TA = +25°C, f = 1MHz, VIN = 0V)
Parameter Description Min. Typ. Max. Unit
CIN Input Capacitance — 2.5 — pF
VI = 0V or VDD
Symbol Description Max Unit
VDD Power Supply Voltage –0.5 to +4.6 V
VIInput Voltage(2) –0.5 to VDD +0.5 V
VOOutput Voltage(2) –0.5 to VDD +0.5 V
IIK Input Clamp Current ±50 mA
VI < 0 or VI > VDD
IOK Output Clamp Current ±50 mA
VO < 0 or VO > VDD
IOContinuous Total Output Current ±50 mA
VO < 0 to VDD
TSTG Storage Temperature –65 to +150 °C
ABSOLUTE MAXIMUM RATINGS(1)
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. Not to exceed 4.6V.
VFQFPN
TOP VIEW
11 Y3
6
Y2
2
3
1
VDD
16
15
14
12
13
NC
NC
Y4
VDD
VDD
8
VDD
5
Y1
G
4
Y0
NC
9
CLK
10 NC
7
VDD
GND
FUNCTION TABLE(1)
NOTE:
1 . H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Inputs Output
GCLK Y(0:4)
LX L
HH H
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INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
Symbol Description Min. Typ. Max. Unit
VDD Internal Power Supply Voltage 2.3 2.5 V
3.3 3.6
VIL Input Voltage LOW VDD = 3V to 3.6V 0 . 8 V
VDD = 2.3V to 2.7V 0 . 7
VIH Input Voltage HIGH VDD = 3V to 3.6V 2 V
VDD = 2.3V to 2.7V 1 . 7
VIInput Voltage 0 VDD V
IOH Output Current HIGH VDD = 3V to 3.6V -12 mA
VDD = 2.3V to 2.7V -6
IOL Output Current LOW VDD = 3V to 3.6V 12 mA
VDD = 2.3V to 2.7V 6
TAAmbient Operating Temperature -40 +85 °C
RECOMMENDED OPERATING RANGE
NOTE:
1. All typical values are at respective nominal VDD.
DC ELECTRICAL CHARACTERISTICS - VDD = 3.3V ± 0.3V
Symbol Parameter Test Conditions Min. Typ.(1) Max Unit
VDD = Min. to Max. IOH = -100µAVDD - 0.2
VOH HIGH level Output Voltage VDD = 3V IOH = -12mA 2 .1 V
IOH = -6mA 2.4
VDD = Min. to Max. IOH = 100µA 0.2
VOL LOW level Output Voltage VDD = 3V IOH = 12mA 0.8 V
IOH = 6m A 0.55
VDD = 3V VO = 1V -28
IOH HIGH level Output Current VDD = 3.3V VO = 1.65V -36 mA
VDD = 3.6V VO = 3.135V -14
VDD = 3V VO = 1.95V 28
IOL LOW level Output Current VDD = 3.3V VO = 1.65V 36 mA
VDD = 3.6V VO = 0.4V 14
NOTE:
1. For IDD over frequency, see TEST CIRCUIT AND WAVEFORMS.
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Symbol Parameter Test Conditions Min. Typ. Max Unit
VIK Input Voltage VDD = 3V, IIN = -18mA - 1.2 V
IIN Input Current VI = 0V or VDD ±5 µA
IDD Static Device Current(1) CLK = 0V or VDD, IO = 0mA, VDD = 3.3V 25 µA
PIN DESCRIPTION
TERMINAL
Symbol I/O Description
G I Output Enable Control for Y(0:4) Outputs. This output enable is active HIGH. If this pin is Logic HIGH, the Y(0:4) clock outputs will follow the
input clock (CLK). If this pin is logic LOW, the Y(0:4) outputs will drive low independent of the state of CLK.
Y(0:4) O Buffered Output Clocks
CLK I Input Reference Frequency
GND Ground
VDD PWR DC Power Supply, 2.3V to 3.6V
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INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
NOTE:
1. All typical values are at respective nominal VDD.
DC ELECTRICAL CHARACTERISTICS - VDD = 2.5V ± 0.2V
Symbol Parameter Test Conditions Min. Typ.(1) Max Unit
VOH HIGH level Output Voltage VDD = Min. to Max. IOH = -100µAVDD - 0.2 V
VDD = 2.3V IOH = -6mA 1.8
VOL LOW level Output Voltage VDD = Min. to Max. IOH = 100µA 0.2 V
VDD = 2.3V IOH = 6mA 0.55
VDD = 2.3V VO = 1V -17
IOH HIGH level Output Current VDD = 2.5V VO = 1.25V -25 mA
VDD = 2.7V VO = 2.375V -10
VDD = 2.3V VO = 1.2V 17
IOL LOW level Output Current VDD = 2.5V VO = 1.25V 25 mA
VDD = 2.7V VO = 0.3V 10
TIMING REQUIREMENTS OVER RECOMMENDED RANGE
Symbol Parameter Test Conditions Min. Typ. Max Unit
fCLK Clock Frequency VDD = 3V to 3.6V 0 200 MHz
VDD = 2.3V to 2.7V 0 170
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INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
SWITCHING CHARACTERISTICS OVER OPERATING RANGE -
VDD = 2.5V ± 0.2V(1)
Symbol Parameter Test Conditions Min. Typ.(1) Max Unit
tPLH CLK to Yx f = 0MHz to 170MHz, CL = 25pF 1.5 3 ns
tPHL
tSK(O)(2) Output Skew, Yx to Yx 100 ps
tSK(P) Pulse Skew 350 ps
tSK(PP) Part-to-Part Skew 600 ps
tRRise Time VO = 0.4V to 1.7V(3) 0.4 1.625 V/ns
tFFall Time VO = 1.7V to 0.4V(3) 0.4 1.625 V/ns
tSU G before CLK↓V(THRESHOLD) = VDD/2 0.1 ns
tHG after CLK↓0.4
NOTES:
1. All typical values are at respective nominal VDD.
2. This specification is only valid for equal loading of all outputs.
3. Measured at 100MHz.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE -
VDD = 3.3V ± 0.3V(1)
Symbol Parameter Test Conditions Min. Typ.(1) Max Unit
tPLH CLK to Yx f = 0MHz to 200MHz, CL = 25pF 1.3 2.6 ns
tPHL
tSK(O)(2) Output Skew, Yx to Yx 75 ps
tSK(P) Pulse Skew 200 ps
tSK(PP) Part-to-Part Skew 500 ps
tRRise Time VO = 0.4V to 2V(3) 0.7 2.3 V/ns
tFFall Time VO = 2V to 0.4V(3) 0.7 2.3 V/ns
tSU G before CLK↓V(THRESHOLD) = VDD/2 0.1 ns
tHG after CLK↓0.4
NOTES:
1. All typical values are at respective nominal VDD.
2. This specification is only valid for equal loading of all outputs.
3. Measured at 100MHz.
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INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
CLK
tEN tDIS
Gx
Yx
OUTPUT ENABLE GLITCH SUPPRESSION CIRCUIT
The purpose of the glitch suppression circuitry is to ensure the output enable sequence is synchronized with the clock input such that the output buffer will be
enabled on the next full period of the input clock (negative edge triggered by the input clock). The G input must be stable one tEN - time prior to the falling edge
of the CLK for predictable operation.
G (tEN, tDIS) Relative to CLK
↓↓
↓↓
↓
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INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
CLK
VDD
50% VDD
0V
tPLH tPHL
1.7V or 2V
0.4V 0.4V
tRtF
VOH
50% VDD
VOL
Yx
CLK
VDD
0V
VOH
VOH
VOL
VOL
50% VDD
50% VDD
tSK(O) tSK(O)
Any Y
Any Y
VDD
VOH
0V
VOL
50% VDD
50% VDD
tPLH tPHL
CLK
Yx
tSK(P) = tPLH tPHL
FROM OUTPUT
UNDER TEST
CL500
Test Load Circuit
Output Skew
TEST CIRCUITS AND WAVEFORMS
Voltage Waveforms Propagation Delay Times
Pulse Skew
NOTES:
1. CL includes probe and jig capacitance.
2. All input pulses are supplied by generators having the following characteristics:
PRR ≤200MHz; ZO = 50Ω; tR < 1.2ns; tF < 1.2ns.
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INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
TEST CIRCUITS AND WAVEFORMS (cont.)
Idd vs Frequency
0
5
10
15
20
25
30
35
40
45
0 20 40 60 80 100 120 140 160 170 180 200
Freq uenc y (MHz)
I dd (mA)
Vdd = 2.5V
Vdd = 3.3V
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INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
RECOMMENDED LANDING PATTERN
NR 16 pin
NOTE: All dimensions are in millimeters.
2.10
2.60
1.50
3.80
2.50
4.30
0.50
0.30
2.60
3.10
10
INDUSTRIAL TEMPERATURE RANGE
IDT5V2305
2.5V TO 3.3V HIGH PERFORMANCE CLOCK BUFFER
ORDERING INFORMATION
CORPORATE HEADQUARTERS for SALES: for Tech Support:
6024 Silver Creek Valley Road 800-345-7015 or 408-284-8200 clockhelp@idt.com
San Jose, CA 95138 fax: 408-284-2775
www.idt.com
Part / Order Numbe
r
Shipping Packaging Package Temperature
5V2305PGI Tubes 16-pin TSSOP -40 to +85° C
5V2305PGI8 Tape and Reel 16-pin TSSOP -40 to +85° C
5V2305PGGI Tubes 16-pin TSSOP -40 to +85° C
5V2305PGGI8 Tape and Reel 16-pin TSSOP -40 to +85° C
5V2305NRI Tubes 16-pin VFQFPN -40 to +85° C
5V2305NRI8 Tape and Reel 16-pin VFQFPN -40 to +85° C
5V2305NRGI Tubes 16-pin VFQFPN -40 to +85° C
5V2305NRGI8 Tape and Reel 16-pin VFQFPN -40 to +85° C
"G" suffix to the part number are the Pb-Free configuration and are RoHS compliant.
