SY10H646L Datasheet, PDF (1/6 Pages) Micrel Semiconductor – 3.3V SINGLE SUPPLY OCTAL PECL/TTL-TO-TTL

3.3V SINGLE SUPPLY
OCTAL PECL/TTL-TO-TTL
ClockWorks™
SY10H646L
SY100H646L
FEATURES
s 3.3V power supply
s PECL/TTL-to-TTL version of popular ECLinPS
E111AE/LE
s Guaranteed low skew specification
s Three-state enable
s Differential internal design
s VBB output for single-ended operation
s Extra TTL and ECL power/ground pins
s Choice of ECL compatibility: 10K or 100K
s Matched high and low output impedance
s Available in 28-pin PLCC package
BLOCK DIAGRAM
EN
Q0
Q1
Q2
DESCRIPTION
The SY10/100H646L are single supply, low skew
translating 1:8 clock drivers. Devices in the Micrel-
Synergy H600 translator series utilize the 28-lead PLCC
for optimal power pinning, signal flow-through and
electrical performance. The single supply H646L is similar
to the HA643 which is a dual supply 1:8 version of the
same function.
These devices feature a 24mA TTL output stage, with
AC performance specified into a 20pF load capacitance.
The 10H version is compatible with 10K ECL logic
levels. The 100H version is compatible with 100K levels.
PIN CONFIGURATION
Q3
OGND
Q2
OVT
Q1
OGND
Q0
25 24 23 22 21 20 19
26
18
27
17
28
16
1
TOP VIEW
15
PLCC
2
14
3
13
4
12
5 6 7 8 9 10 11
EN
IVT
IGND
VCCE
VCCE
VBB
ECLK
TCLK
ECLK
ECLK
VBB
Q3
PIN NAMES
Pin
Function
Q4
OGND
TTL Output Ground (0V)
OVT
TTL Output VCC (+3.0V)
IGND
Internal TTL GND (0V)
Q5
IVT
Internal TTL VCC (+3.0V)
VEE
ECL VEE (0V)
VCCE
ECL Ground (+3.0V)
Q6
ECLK, ECLK
Differential Signal Input (PECL)
VBB
VBB Reference Output
Q0–Q7
Signal Outputs (TTL)
Q7
EN
Three-State Enable Input (TTL)
TCLK
Signal Input (TTL)
Rev.: E Amendment: /0
1
Issue Date: May, 1999