PCS2P5T915A datasheet(9/23 Pages) PULSECORE

Part #	PCS2P5T915A

Description	Low Voltage (2.5V) High Accuracy 1:5 Clock Fan-Out Buffer

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Manufacturer	PULSECORE [PulseCore Semiconductor]

Direct Link	http://www.onsemi.com/

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9 / 23 page

September 2006

PCS2P5T915A

rev 0.2

Low Voltage (2.5V) High Accuracy 1:5 Clock Fan-Out Buffer

9 of 23

Notice: The information in this document is subject to change without notice.

Differential Input AC Test Conditions for LVEPECL

Symbol

Parameter

Value

Units

VDIF

Input Signal Swing

1

732

mV

VX

Differential Input Signal Crossing Point

2

1082

mV

VTHI

Input Timing Measurement Reference Level

3

Crossing Point

V

tR, tF

Input Signal Edge Rate

4

1

V/nS

Notes: 1. The 732mV peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment.

Compliant devices must meet the VDIF (AC) specification under actual use conditions.

2. A 1082mV crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. Compliant

devices must meet the VX specification under actual use conditions.

3. In all cases, input waveform timing is marked at the differential cross-point of the input signals.

4. The input signal edge rate of 1V/nS or greater is to be maintained in the 20% to 80% range of the input waveform.

DC Electrical Characteristics Over Operating Range for 2.5V LVTTL

1

Symbol

Parameter

Test Conditions

Min

Typ

8

Max

Unit

Input Characteristics

IIH

Input HIGH Current

10

VDD= 2.6V

VI = VDDQ/GND

±5

IIL

Input LOW Current

10

VDD= 2.6V

VI = GND/VDDQ

±5

µA

VIK

Clamp Diode Voltage

VDD= 2.4V, IIN = -18mA

- 0.7

- 1.2

V

VIN

DC Input Voltage

-0.3

+3.6

V

Single-Ended Inputs

2

VIH

DC Input HIGH

1.7

V

VIL

DC Input LOW

0.7

V

Differential Inputs

VDIF

DC Differential Voltage

3,9

0.2

V

VCM

DC Common Mode Input

Voltage

4,9

1150

1250

1350

mV

VIH

DC Input HIGH

5,6,9

VREF+ 100

mV

VIL

DC Input LOW

5,7,9

VREF- 100

mV

VREF

Single-Ended Reference

Voltage

5,9

1250

mV

Output Characteristics

IOH= -12mA

VDDQ- 0.4

V

VOH

Output HIGH Voltage

IOH= -100µA

VDDQ- 0.1

V

IOL= 12mA

0.4

V

VOL

Output LOW Voltage

IOL= 100µA

0.1

V

Notes: 1. See RECOMMENDED OPERATING RANGE table.

2. For 2.5V LVTTL single-ended operation, the RxS pin is tied HIGH and A/VREF is tied to GND.

3. VDIF specifies the minimum input differential voltage (VTR - VCP) required for switching where VTR is the "true" input level and VCP is the

"complement" input level. Differential mode only. The DC differential voltage must be maintained to guarantee retaining the existing HIGH or LOW

input. The AC differential voltage must be achieved to guarantee switching to a new state.

4. VCM specifies the maximum allowable range of (VTR + VCP) /2. Differential mode only.

5. For single-ended operation, in differential mode, A/VREF is tied to the DC voltage VREF.

6. Voltage required to maintain a logic HIGH, single-ended operation in differential mode.

7. Voltage required to maintain a logic LOW, single-ended operation in differential mode.

8. Typical values are at VDD = 2.5V, VDDQ = VDD, +25°C ambient.

9. The reference clock input is capable of HSTL, eHSTL, LVEPECL, 1.8V or 2.5V LVTTL operation independent of the device output. The correct input

interface table should be referenced.

10. For differential mode (RxS = LOW), A and A/VREF must be at the opposite rail.

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