MC10H643 Datasheet, PDF (1/5 Pages) ON Semiconductor – DUAL SUPPLY ECL-TTL 1:8 CLOCK DRIVER

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Dual Supply
ECL-TTL 1:8 Clock Driver
The MC10H/100H643 is a dual supply, low skew translating 1:8 clock
driver. Devices in the Motorola H600 translator series utilize the 28–lead
PLCC for optimal power pinning, signal flow through and electrical
performance. The dual–supply H643 is similar to the H641, which is a
single–supply 1:9 version of the same function.
The device features a 48mA TTL output stage, with AC performance
specified into a 50pF 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 10H version is compatible with MECL 10H™ ECL logic levels. The
100H version is compatible with 100K levels.
• ECL/TTL Version of Popular ECLinPS™ E111
• Low Skew Within Device 0.5ns
• Guaranteed Skew Spec Part–to–Part 1.0ns
• Latch
• Differential Internal Design
• VBB Output
• Dual Supply
• Reset/Enable
• Multiple TTL and ECL Power/Ground Pins
MC10H643
MC100H643
DUAL SUPPLY
ECL–TTL 1:8
CLOCK DRIVER
FN SUFFIX
PLASTIC PACKAGE
CASE 776–02
Pinout: 28–Lead PLCC (Top View)
25 24 23 22 21 20 19
Q3 26
18
OGND2 27
17
Q2 28
16
OVT1 ₁
15
Q1 2
14
OGND1 3
13
Q0 4
12
5 6 7 8 9 10 11
IVT2
IGND2
VCCE
VCCE
LEN
VBB
D
PIN NAMES
PIN
OGND
OVT
IGND
IVT
VEE
VCCE
D, D
VBB
Q0–Q7
EN
LEN
FUNCTION
TTL Output Ground (0V)
TTL Output VCC (+5.0V)
Internal TTL GND (0V)
Internal TTL VCC (+5.0V)
ECL VEE (–5.2/–4.5V)
ECL Ground (0V)
Signal Input (ECL)
VBB Reference Output
Signal Outputs (TTL)
Enable Input (ECL)
Latch Enable Input (ECL)
ECLinPS and MECL 10H are trademarks of Motorola, Inc.
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© Motorola, Inc. 1996
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