SSTU32864ECSLASHG datasheet(13/21 Pages) PHILIPS

13 / 21 page

9397 750 14092

Product data sheet

Rev. 02 — 22 October 2004

13 of 21

Philips Semiconductors

SSTU32864

1.8 V conﬁgurable registered buffer for DDR2 RDIMM applications

VID = 600 mV

VREF =VDD/2

VIH =VREF + 250 mV (AC voltage levels) for differential inputs. VIH =VDD for LVCMOS inputs.

VIL =VREF − 250 mV (AC voltage levels) for differential inputs. VIL = GND for LVCMOS inputs.

Fig 9.

Voltage waveforms; set-up and hold times

tPLH and tPHL are the same as tPD.

Fig 10. Voltage waveforms; propagation delay times (clock to output)

tPLH and tPHL are the same as tPD.

VIH =VREF + 250 mV (AC voltage levels) for differential inputs. VIH =VDD for LVCMOS inputs.

VIL =VREF − 250 mV (AC voltage levels) for differential inputs. VIL = GND for LVCMOS inputs.

Fig 11. Voltage waveforms; propagation delay times (reset to output)

tsu

VIH

VIL

VID

input

VREF

VICR

002aaa374

VOH

VOL

output

tPLH

002aaa375

VTT

VICR

tPHL

Vi(p-p)

tPHL

002aaa376

LVCMOS

RESET

output

VTT

VDD/2

VIH

VIL

VOH

VOL

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