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DUAL SUPPLY
OCTAL ECL-TO-TTL
ClockWorks™
SY100HA643
FEATURES
■ ECL/TTL version of popular ECLinPS™ E111
■ 400ps within device skew
■ 800ps part-to-part skew
■ Latch
■ Differential internal design
■ V
BB output
■ Dual supply
■ Reset/Enable
■ Multiple TTL and ECL power/ground pins
■ Fully compatible with Motorola MC100H643
■ Higher performance than H643 versions
■ Industrial temperature availability
■ Available in 28-pin PLCC package
BLOCK DIAGRAM
Q
Q
Q
DESCRIPTION
The SY100HA643 is an enhanced dual supply, low skew
translating 1:8 clock driver. Devices in the Micrel-Synergy
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.
PIN CONFIGURATION
3
5
Q
Q4OGND
0
Q
3
OGND
2
Q
1
2
OVT
OGND
2
1
Q
1
1
Q
0
25 24 23 22 21 20 19
26
27
28
SY100HA643
1
2
3
4
TOP VIEW
PLCC
567891011
2
OVT
6
Q
4
7
OGND
Q
18
IVT
2
17
IGND
2
16
V
CCE
15
V
CCE
14
LEN
13
12
BB
V
D
1
1
EE
VEEV
Q
3
D
D
V
BB
LEN
EN
D
TTL OUTPUTS
PIN NAMES
Q
Pin Function
Q
4
OGND TTL Output Ground (0V)
IVT
V
1GND
EE
EN
D
OVTTTL Output VCC (+5.0V)
IGND Internal TTL GND (0V)
Q
5
IVT Internal TTL VCC (+5.0V)
VEE ECL VEE (-5.2/-4.5V)
Q
6
VCCE ECL Ground (0V)
D, D Signal Input (ECL)
VBB VBB Reference Output
Q
7
Q0 - Q7 Signal Outputs (TTL)
EN Enable Input (ECL)
LEN Latch Enable Input (ECL)
Rev.: G Amendment: /1
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Issue Date: August, 1998
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ClockWorks™
Micrel
SY100HA643
TRUTH TABLE
D LEN EN Q
LLLL
HLLH
XXHL
DC CHARACTERISTICS
IVT = OVT = 5.0V ±5%; VEE = –4.2V to –5.5V; VCCE = GND
A = –40°CTA = 0°CTA = +25°CTA = +85°C
T
Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit Condition
EE ECL — 58 — 58 — 58 — 58 mA VEE Pins
I
ICCL Power Supply TTL — 83 — 83 — 83 — 83 mA Total all OVT
ICCH — 73 — 73 — 73 — 73 mA and IVT pins
OH TTL Output HIGH 2.5 — 2.5 — 2.5 — 2.5 — V IOH = –3.0mA
V
Voltage 2.0 — 2.0 — 2.0 — 2.0 — IOH = –15mA
VOL TTL Output LOW Voltage — 0.5 — 0.5 — 0.5 — 0.5 V IOL = 48mA
OS TTL Output Short Circuit
I
Current –80 –200 –80 –200 –80 –200 –80 –200 mA VOUT = 0V
IIH ECL Input HIGH Current — 225 — 225 — 175 — 175 µA
IIL ECL Input LOW Current 0.5 — 0.5 — 0.5 — 0.5 — µA
VIH ECL Input HIGH Voltage — — –1165 –880 –1165 –880 –1165 –880 mV
VIL ECL Input LOW Voltage — — –1810 –1475 –1810 –1475 –1810 –1475 mV
BB ECL Output Reference
V
Voltage –1380 –1260 –1380 –1260 –1380 –1260 –1380 –1260 mV
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ClockWorks™
Micrel
SY100HA643
AC CHARACTERISTICS
IVT = OVT = 5.0V ±5%; VEE = –4.2V to –5.5V ; VCCE = GND
A = –40°CTA = 0°CTA = +25°CTA = +85°C
T
Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit Condition
IH Propagation Delay D
I
to Output LEN 2.3 3.1 2.3 3.1 2.3 3.1 2.3 3.1 ns CL = 20pF
EN
tskew Within-Device Skew
t
PW Pulse Width Out
@ FOUT = 100MHz
tS Setup Time D 0.75 — 0.75 — 0.75 — 0.75 — ns
tH Hold Time D 0.75 — 0.75 — 0.75 — 0.75 — ns
RR Recovery TimeLEN 1.25 — 1.25 — 1.25 — 1.25 — ns
t
t
PW Minimum PulseLEN 1.5 — 1.5 — 1.5 — 1.5 — ns
Width EN 1.5 — 1.5 — 1.5 — 1.5 — ns
tr Rise / Fall times
tf 0.8V — 2.0V — 1.5 — 1.5 — 1.5 — 1.5 ns CL = 20pF
fMAX Max. Input Frequency
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 fMAX value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater.
(1)
(2)
— 0.4 — 0.4 — 0.4 — 0.4 ns
HIGH or LOW 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 ns CL = 20pF
EN 1.25 — 1.25 — 1.25 — 1.25 — ns
(3,4)
160—160—160—160—MHzCL = 20pF
PRODUCT ORDERING CODE
Ordering Package Operating
Code Type Range
SY100HA643JC J28-1 Commercial
SY100HA643JCTR J28-1 Commercial
Ordering Package Operating
Code Type Range
SY100HA643JI J28-1 Industrial
SY100HA643JITR J28-1 Industrial
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Micrel
28 LEAD PLCC (J28-1)
ClockWorks™
SY100HA643
Rev. 03
MICREL-SYNERGY 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA
TEL + 1 (408) 980-9191 FAX + 1 (408) 914-7878 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
© 2000 Micrel Incorporated
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