MICREL SY100S863 Datasheet
8-INPUT PECL
DIFFERENTIAL MUX
WITH TTL SELECTS
FEATURES
■ Low skew
■ Differential PECL inputs
■ Differential cut-off PECL outputs capable of driving
25Ω load for driving data bus
■ Tri-state TTL output
■ TTL select and enable input
■ Internal 75KΩ PECL input pull-down resistors
■ PECL I/O fully compatible with industry standard
■ Available in 28-pin PLCC package
BLOCK DIAGRAM
D0
(4)
D0
(5)
D1
(6)
D1
(7)
D2
(8)
D2
(9)
D3
(10)
D3
(11)
D4
(27)
D4
(26)
PECL INPUTS
D5
D5
D6
D6
D7
D7
(25)
(24)
(23)
(22)
(21)
(20)
8 DIFFERENTIAL
8:1
MUX
Q
(17)
(18)
Q
(13) QTTL
SY100S863
DESCRIPTION
The SY100S863 is a PECL 8:1 multiplexer designed for
use in new, high-performance PECL systems. It has
differential PECL outputs and a standard TTL output. The
TTL select inputs (SEL0, SEL1, SEL2) determine which one
of the eight differential PECL data inputs (D0–D7) is
propagated to the outputs. The enable pin, EN, is provided
for expansion. When EN is at a TTL logic one level, both
PECL and TTL outputs are enabled. When the enable pin
is set to TTL logic zero level, both PECL outputs of the
differential pair are in cut-off and the TTL output is in a
three-state condition.
PIN CONFIGURATION
5
SEL
V
SEL
SEL
6
5
D
D
D
D
4
D
4
0
EE
1
2
D
0
25 24 23 22 21 20 19
26
27
28
1
2
3
4
TOP VIEW
PLCC
J28-1
567891011
1
1
0
D
D
D
6
D
2
D
7
D
D7V
2
3
D
D
CCO
3
D
18
Q
17
Q
16
15
14
13
12
V
EN
V
Q
V
CC
CCT
TTL
GT
(2)
(15)
(28)
0
EN
SEL
SEL1
TTL INPUTS
(3)
SEL2
PIN NAMES
Pin Function
D0, /D0 – D7, /D7 Differential PECL Input Pairs
Q, /Q Differential PECL Outputs
QTTL TTL Output
EN Enable Input
0,1,2 Select Inputs
SEL
Rev.: E Amendment: /0
1
Issue Date: May 2000
Micrel
TRUTH TABLE
EN SEL2 SEL1 SEL0 QQTTL
HLLLD0 D0
HLLHD1 D1
HLHLD2 D2
HLHHD3 D3
HHLLD4 D4
HHLHD5 D5
HHHLD6 D6
HHHHD7 D7
LXXXZZ
PECL DC ELECTRICAL CHARACTERISTICS
VCC = VCCO = VCCT = 5.0V ± 5%; VEE = VGT = GND
Symbol Parameter Min. Typ. Max. Unit Condition
VOH Output HIGH Voltage
VOL Output LOW Voltage
VOZ Cutoff Voltage
VIH Input HIGH Voltage 3.835 — 4.13 V
VIL Input LOW Voltage 3.17 — 3.525 V
IIH Input HIGH Current ——350 µAVIN = VIH (Max.)
IIL Input LOW Current 0.50 ——µAVIN = VIL (Min.)
CC VCC Supply Current — 73 88 mA
I
NOTE:
1. Levels shown are for VCCO = 5.0V and will vary 1:1 with powers.
(1)
(1)
(1)
3.975 4.045 4.13 V Loading with 25Ω to 3V (VCC-2V)
3.17 3.295 3.38 V Loading with 25Ω to 3V (VCC-2V)
— 3 3.10 V Loading with 25Ω to 3V (VCC-2V)
SY100S863
TTL DC ELECTRICAL CHARACTERISTICS
VCC = VCCO = VCCT = 5.0V ± 5%; VEE = VGT = GND
Symbol Parameter Min. Typ. Max. Unit Condition
VOH Output HIGH Voltage 2.4 2.9 — VIOH = –3mA
VOL Output LOW Voltage — 0.3 0.5 V IOL = 24mA
VIH Input HIGH Voltage 2.0 — VCC V
VIL Input LOW Voltage 0 — 0.8 V
IIH Input HIGH Current ——1.0 mA VIN = 2.7V
IIL Input LOW Current –0.7 ——mA VIN = 0.5V
VIK Input Clamp Voltage –1.2 ——VIIN = –18mA
IOS Output Short Circuit Current –200 —–60 mA VOUT = 0V, VCCT = 5.5V
IOZHT Tri-state Current Output HIGH ——70 µAVOUT = 2.7V
OZLT Tri-state Current Output LOW –700 ——µAVOUT = 0.5V
I
2
Micrel
SY100S863
PECL AC ELECTRICAL CHARACTERISTICS
VCC = VCCO = +5.0V ± 5%; VEE = VGT = GND
TA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
PLH Propagation Delay
t
PHL D to Q 500 — 900 500 — 900 500 — 900
t
SEL
0 to Q 300 — 2000 300 — 2000 300 — 2000
SEL1 to Q 300 — 1750 300 — 1750 300 — 1750
SEL2 to Q 300 — 1500 300 — 1500 300 — 1500
PZH EN to Q
t
(Cutoff to HIGH)
tPHZ EN to Q
(3)
(3)
300 — 1300 300 — 1300 300 — 1300
(HIGH to Cutoff)
r Output Rise/Fall Times
t
tf 20% to 80%
NOTES:
1. Part-to-part skew is defined as Max. – Min. value at the given temperature.
2. RL = 50Ω
3. Figures 1 and 2
(1),(2)
300 — 1750 300 — 1750 300 — 1750 ps
(2)
300 400 600 300 400 600 300 400 600 ps
ps
TTL AC ELECTRICAL CHARACTERISTICS
VCC = VCCO = 5V ± 5%; VEE = VGT = GND
TA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
t
PLH Propagation Delay
tPHL D to QTTL 2.5 — 5.0 2.5 — 5.0 2.5 — 5.0
SEL0 to QTTL 2.5 — 5.0 2.5 — 5.0 2.5 — 5.0
SEL1 to QTTL 2.5 — 5.0 2.5 — 5.0 2.5 — 5.0
SEL2 to QTTL 2.5 — 5.0 2.5 — 5.0 2.5 — 5.0
PZH EN to TTL Output
t
tPZL (Enable Time) 2.5 — 5.0 2.5 — 5.0 2.5 — 5.0
PHZ EN to TTL Output
t
tPLZ (Disable Time) 2.5 — 5.0 2.5 — 5.0 2.5 — 5.0
r Output Rise/Fall Time
t
tf 0.8V to 2.4V 0.3 — 1.6 0.3 — 1.6 0.3 — 1.6
0.8Vto 2.0V
NOTES:
1. Part-to-part skew is defined as Max. – Min. value at the given temperature.
2. Figures 3 and 4
3. CL = 25pF
(1)(2)
(2)
(2)
2.5 — 5.0 2.5 — 5.0 2.5 — 5.0 ns
2.5 — 5.0 2.5 — 5.0 2.5 — 5.0 ns
(3)
ns
ns
3
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