TI380C60 Datasheet, PDF (11/15 Pages) Texas Instruments – CMOS TOKEN-RING INTERFACE DEVICE

TI380C60
CMOS TOKENĆRING INTERFACE DEVICE
SPWS015B − APRIL 1995 − REVISED OCTOBER 1996
electrical characteristics over recommended ranges of supply voltage and operating case
temperature (unless otherwise noted)
PLL characteristics
PARAMETER
Reference PLL operating filter voltage
TEST CONDITIONS
tc(XT1) = 125 ns
MIN MAX UNIT
1.8
4V
crystal-oscillator characteristics
VIB(XT1)
IOH(XT2)
PARAMETER
Input self-bias voltage
High-level output current
IOL(XT2) Low-level output current
TEST CONDITIONS
V(XT2) = VSB(XT1)
V(XT1) = VSB(XT1) + 0.5 V
V(XT2) = VSB(XT1)
V(XT1) = VSB(XT1) − 0.5 V
MIN MAX UNIT
1.8
4V
− 2.5 − 6.5 mA
0.4 1.3 mA
switching characteristics over recommended range of supply voltage (unless otherwise noted)
transmitter-drive characteristics
PARAMETER
VPP(XMT) XMT+ / XMT− peak-to-peak voltage (see Note 12)
NOTE 12: VPP(XMT) is determined by:
VOH(XMT+) + VOH(XMT−) − VOL(XMT+) − VOL(XMT−)
TEST CONDITIONS
VDD = 4.75 V,
See Figures 4 and 5
VDD = 5.25 V,
See Figures 4 and 5
MIN MAX UNIT
8.2
V
10.3
transmitter switching characteristics (see Figures 4 and 5)
PARAMETER
TEST CONDITIONS
XMT+/XMT− skew (see Note 13)
tsk(DRV) = − 1 ns
tsk(DRV) = + 1 ns
XMT+/XMT− asymmetry (see Note 14)
tsk(DRV) = − 1 ns
tsk(DRV) = + 1 ns
NOTES: 13. XMT+/XMT− skew is determined by: td(XMT+ _H) − td(XMT− _L) or td(XMT+ _L) − td(XMT− _H)
14. XMT+/XMT− asymmetry is determined by:
td(XMT_)L) ) td(XMT– _H) td(XMT_)H) ) td(XMT– _L)
2
–
2
MIN MAX UNIT
− 3 + 3 ns
− 3 + 3 ns
− 2 + 2 ns
− 2 + 2 ns
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