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PDF SY100S863 Data sheet ( Hoja de datos )
| Número de pieza | SY100S863 | |
| Descripción | 8-Input Pecl Differential Mux W/ttl Selects | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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8-INPUT PECL
DIFFERENTIAL MUX
WITH TTL SELECTS
SY100S863
FINAL
FEATURES
s Low skew
s Differential PECL inputs
s Differential cut-off PECL outputs capable of driving
25Ω load for driving data bus
s Tri-state TTL output
s TTL select and enable input
s Internal 75KΩ PECL input pull-down resistors
s PECL I/O fully compatible with industry standard
s Available in 28-pin PLCC package
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.
BLOCK DIAGRAM
D0 (4)
D0 (5)
D1 (6)
D1 (7)
D2 (8)
D2 (9)
D3 (10)
D3 (11)
D4 (27)
D4 (26)
D5 (25)
D5 (24)
D6 (23)
D6 (22)
D7 (21)
D7 (20)
8:1
MUX
PIN CONFIGURATION
(17) Q
(18) Q
www.DataSheet4U.com
(13) QTTL
D4
D4
SEL0
VEE
SEL1
SEL2
D0
25 24 23 22 21 20 19
26 18
27 17
28 16
1
TOP VIEW
PLCC
15
2
J28-1
14
3 13
4 12
5 6 7 8 9 10 11
Q
Q
VCC
EN
VCCT
QTTL
VGT
TTL INPUTS
PIN NAMES
Pin
D0, /D0 – D7, /D7
Q, /Q
QTTL
EN
SEL0,1,2
Function
Differential PECL Input Pairs
Differential PECL Outputs
TTL Output
Enable Input
Select Inputs
Rev.: E Amendment: /0
1 Issue Date: May 2000
1 page  
Micrel
PECL-TO-TTL TEST CIRCUITRY
VCC, VCCT & VCCO
5V
0.1µ
PULSE
GENERATOR
CH C
STTL
RT
50Ω
VEE, VGT
DQ
DUT Q
QTTL
EN
50pF
450Ω
FTTL
-3V
0V
7V
LZ/ZL
Three-State
Pull-up
500Ω
450Ω
USE OSCILLOSCOPE
INTERNAL 50Ω LOAD
CH A
FOR TERMINATION.
OSCILLOSCOPE
Figure 3. PECL-to-TTL AC Test Circuit
CH B
SY100S863
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet SY100S863.PDF ] | |
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