The SY100HA643 is an enhanced dual supply, low skew
translating 1:8 clock driver. Devices in the Micrel H600
translators series utilize the 28-lead PLCC for optimal power
pinning, signal flow through and electrical performance. The
dual-supply HA643 is similar to the H641, which is a single-
supply 1:9 version of the same function, with higher
performance than the H643 versions.
The device features a 48mA TTL output stage, with AC
performance specified into a 20pF load capacitance. A
Latch is provided on-chip. When LEN is LOW (or left open,
in which case it is pulled LOW by the internal pulldowns)
the latch is transparent. A HIGH on the enable pin (EN)
forces all outputs LOW.
The 100HA643 is compatible with 100K ECL logic levels.
Q
0
BLOCK DIAGRAM
Q
1
PIN NAMES
Pin
OGND
Function
TTL Output Ground (0V)
Output V
CC
(+5.0V)
Internal TTL GND (0V)
Internal TTL V
CC
(+5.0V)
ECL V
EE
(-5.2/-4.5V)
ECL Ground (0V)
Signal Input (ECL)
V
BB
Reference Output
Signal Outputs (TTL)
Enable Input (ECL)
Latch Enable Input (ECL)
Q
2
OVTTTL
IGND
Q
3
D
D
V
BB
LEN
EN
IVT
V
EE
V
CCE
D
TTL OUTPUTS
Q
Q
4
D, D
V
BB
Q0 - Q7
EN
LEN
Q
5
Q
6
Q
7
Precision Edge is a registered trademark of Micrel, Inc.
M9999-032906
hbwhelp@micrel.com or (408) 955-1690
Rev.: H
Amendment: /0
1
Issue Date: March 2006
Micrel, Inc.
Precision Edge
®
SY100HA643
PACKAGE/ORDERING INFORMATION
OGND
3
Q
5
OVT
2
Q
6
OGND
4
Ordering Information
(1)
Q
7
Q
4
Part Number
25 24
23 22 21 20 19
18
17
Package
Type
J28-1
J28-1
J28-1
J28-1
J28-1
J28-1
Operating
Range
Commercial
Commercial
Industrial
Industrial
Industrial
Industrial
Package
Marking
SY100HA643JC
SY100HA643JC
SY100HA643JI
SY100HA643JI
Lead
Finish
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Q
3
OGND
2
Q
2
OVT
1
Q
1
OGND
1
Q
0
26
27
28
1
2
3
4
5
6
7
8
9
10 11
IVT
2
IGND
2
V
CCE
V
CCE
LEN
V
BB
D
SY100HA643JC
SY100HA643JCTR
(2)
SY100HA643JI
SY100HA643JITR
(2)
SY100HA643JY
(3)
SY100HA643JYTR
(2, 3)
SY100HA643
TOP VIEW
PLCC
16
15
14
13
12
SY100HA643JY with
Matte-Sn
Pb-Free bar-line indicator
SY100HA643JY with
Matte-Sn
Pb-Free bar-line indicator
1GND
1
IVT
1
V
EE
V
EE
V
EE
EN
D
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A
= 25°C, DC Electricals only.
2. Tape and Reel.
3. Pb-Free package is recommended for new designs.
28-Pin PLCC (J28-1)
M9999-032906
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
Precision Edge
®
SY100HA643
TRUTH TABLE
D
L
H
X
LEN
L
L
X
EN
L
L
H
Q
L
H
L
DC CHARACTERISTICS
I
VT = OVT = 5.0V
±5%;
V
EE
= –4.2V to –5.5V; V
CCE
= GND
T
A
= –40
°
C
Symbol
I
EE
I
CCL
I
CCH
V
OH
V
OL
I
OS
I
IH
I
IL
V
IH
V
IL
V
BB
Parameter
Power Supply
TTL Output HIGH
Voltage
TTL Output LOW Voltage
TTL Output Short Circuit
Current
ECL Input HIGH Current
ECL Input LOW Current
ECL Input HIGH Voltage
ECL Input LOW Voltage
ECL Output Reference
Voltage
ECL
TTL
Min.
—
—
—
2.5
2.0
—
–80
—
0.5
—
—
–1380
Max.
58
83
73
—
—
0.5
–200
225
—
—
—
–1260
T
A
= 0
°
C
Min.
—
—
—
2.5
2.0
—
–80
—
0.5
–1165
–1810
–1380
Max.
58
83
73
—
—
0.5
–200
225
—
–880
–1475
–1260
T
A
= +25
°
C
Min.
—
—
—
2.5
2.0
—
–80
—
0.5
–1165
–1810
–1380
Max.
58
83
73
—
—
0.5
–200
175
—
–880
–1475
–1260
T
A
= +85
°
C
Min.
—
—
—
2.5
2.0
—
–80
—
0.5
–1165
–1810
–1380
Max.
58
83
73
—
—
0.5
–200
175
—
–880
–1475
–1260
Unit
mA
mA
mA
V
V
mA
µA
µA
mV
mV
mV
Condition
V
EE
Pins
Total all OVT
and IVT pins
I
OH
= –3.0mA
I
OH
= –15mA
I
OL
= 48mA
V
OUT
= 0V
M9999-032906
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
Precision Edge
®
SY100HA643
AC CHARACTERISTICS
IVT = OVT = 5.0V
±5%;
V
EE
= –4.2V to –5.5V ; V
CCE
= GND
T
A
= –40
°
C
Symbol
I
IH
Parameter
Propagation Delay
to Output
Within-Device Skew
(1)
Pulse Width Out
(2)
HIGH or LOW
@ FOUT = 100MHz
Setup Time
Hold Time
Recovery TimeLEN
EN
t
PW
tr
tf
f
MAX
Minimum PulseLEN
Width
Rise / Fall times
0.8V — 2.0V
Max. Input
Frequency
(3,4)
EN
D
D
D
LEN
EN
Min.
2.3
—
4.5
0.75
0.75
1.25
1.25
1.5
1.5
—
160
Max.
3.1
0.4
5.5
—
—
—
—
—
—
1.5
—
T
A
= 0
°
C
Min.
2.3
—
4.5
0.75
0.75
1.25
1.25
1.5
1.5
—
160
Max.
3.1
0.4
5.5
—
—
—
—
—
—
1.5
—
T
A
= +25
°
C
Min.
2.3
—
4.5
0.75
0.75
1.25
1.25
1.5
1.5
—
160
Max.
3.1
0.4
5.5
—
—
—
—
—
—
1.5
—
T
A
= +85
°
C
Min.
2.3
—
4.5
0.75
0.75
1.25
1.25
1.5
1.5
—
160
Max.
3.1
0.4
5.5
—
—
—
—
—
—
1.5
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
C
L
= 20pF
C
L
= 20pF
C
L
= 20pF
Condition
C
L
= 20pF
t
skew
t
PW
t
S
t
H
t
RR
Notes:
1. Within-Device skew defined as identical transitions on similar paths through a device.
2. Pulse width is defined relative to 1.5V measurement points on the output waveform.
3. Frequency at which output levels will meet a 0.8V to 2.0V minimum swing.
4. The f
MAX
value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater.
M9999-032906
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
Precision Edge
®
SY100HA643
28-PIN PLCC (J28-1)
Rev. 03
MICREL, INC.
TEL
2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
FAX
+ 1 (408) 944-0800
+ 1 (408) 474-1000
WEB
http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
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