Micrel
SY10ELT28
SY100ELT28
AC ELECTRICAL CHARACTERISTICS
VCC = +5.0V ±10%
Symbol
Parameter
TA = –40°C
Min. Typ. Max.
fMAX
MaximumFrequency(1) PECL 700
—
—
TTL 160 —
—
tPLH
Propagation DEC L ➝ QTTL 1.5
—
5.5
Delay
DTTL ➝ QECL 0.2 — 1.2
tPHL
Propagation DEC L ➝ QTTL 1.5
—
5.5
Delay
DTTL ➝ QECL 0.2 — 1.2
VPP
PECL Input VoltageSwing(2) 200 800 1000
(Single-Ended)(3)
TA = +25°C
Min. Typ. Max.
700 —
—
160 —
—
1.5 — 5.5
0.2 1.2 1.5
1.5 — 5.5
0.2 1.2 1.5
200 800 1000
tr
QECL Output Rise/Fall Times 0.15 — 1.5 0.15 0.3 1.5
tf
(20% to 80%)
QTTL Output Rise/Fall Times
(10% to 90%)
TTL — 1.0 —
— 0.80 —
NOTES:
1. fMAX is defined as the maximum toggle frequency.
2. VPP (Min) is the minimum input swing for which AC parameters are guaranteed.
3. See “Timing Waveform.”
TA = +85°C
Min. Typ. Max.
700 —
—
160 —
—
1.5 — 5.5
0.2 — 1.35
1.5 — 5.5
0.2 — 1.35
200 800 1000
Unit Condition
MHz
MHz
ns CL = 20pF
ns 50Ω toVCC–2V
ns CL = 20pF
ns 50Ω toVCC–2V
mV
0.15 —
1.5 ns
50Ω to
VCC –2V
CL = 20pF;
— 0.7 — ns TTL Output
TIMING WAVEFORM
Q(0:9)
/Q(0:9)
150mV to 1200mV
PRODUCT ORDERING CODE
Ordering
Code
Package Operating
Type
Range
SY10ELT28KC
K8-1 Commercial
SY10ELT28KCTR*
K8-1 Commercial
SY100ELT28KC
K8-1 Commercial
SY100ELT28KCTR* K8-1 Commercial
SY10ELT28ZC
Z8-1 Commercial
SY10ELT28ZCTR*
Z8-1 Commercial
SY100ELT28ZC
Z8-1 Commercial
SY100ELT28ZCTR*
Z8-1 Commercial
*Tape and Reel
Note 1. Recommended for new designs.
Marking
Code
XL28
XL28
XL28
XL28
XEL28
XEL28
XEL28
XEL28
Ordering
Code
SY10ELT28KI(1)
SY10ELT28KITR*(1)
SY100ELT28KI(1)
SY100ELT28KITR*(1)
SY10ELT28ZI(1)
SY10ELT28ZITR*(1)
SY100ELT28ZI(1)
SY100ELT28ZITR*(1)
Package
Type
K8-1
K8-1
K8-1
K8-1
Z8-1
Z8-1
Z8-1
Z8-1
Operating
Range
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Marking
Code
XL28
XL28
XL28
XL28
XEL28
XEL28
XEL28
XEL28
4