Micrel, Inc.
3-BIT SCANNABLE
REGISTERED BUS
TRANSCEIVER
DESCRIPTION
SY10E337
SY100E337
SY10E337
SY100E337
FEATURES
s
s
s
s
s
1500ps max. clock to bus (data transmit)
1000ps max. clock to Q (data receive)
Extended 100E V
EE
range of –4.2V to –5.5V
25
Ω
cutoff bus outputs
50
Ω
receiver outputs
s
Scannable implementation of E336
s
Synchronous and asynchronous bus enables
s
Non-inverting data path
s
Bus outputs feature internal edge slow-down
capacitors
s
Additional package ground pins
s
Fully compatible with industry standard 10KH,
100K ECL levels
s
Internal 75K
Ω
input pulldown resistors
s
Fully compatible with Motorola MC10E/100E337
s
Available in 28-pin PLCC package
PIN NAMES
Pin
A
0
–A
2
B
0
–B
2
S-IN
TEN, REN
SCAN
ABUSDIS
SBUSEN
SYNCEN
CLK
BUS
0
–BUS
2
Q
0
–Q
2
V
CCO
Function
Data Inputs A
Data Inputs B
Serial (Scan) Data Input
LOAD/HOLD Controls
Scan Control
Asynchronous Bus Disable
Synchronous Bus Enable
Synchronous Enable Control
Clock
25Ω Cutoff BUS Outputs
Receive Data Outputs (Q
2
serves as
SCAN_OUT in scan mode)
V
CC
to Output
The SY10/100E337 are 3-bit registered bus transceivers
with scan designed for use in new, high- performance ECL
systems. The bus outputs (BUS
0
–BUS
2
) are designed to
drive a 25Ω bus; the receive outputs (Q
0
–Q
2
) are designed
for 50Ω. The bus outputs feature a normal logic HIGH level
(V
OH
) and a cutoff LOW level of –2.0V and the output
emitter-follower is “off”, presenting a high impedance to the
bus. The bus outputs also feature edge slow-down
capacitors.
Both drive and receive sides feature the same logic,
including a loopback path to hold data. The LOAD/HOLD
function is controlled by Transmit Enable (TEN) and Receive
Enable (REN) on the transmit and receive sides,
respectively, with a HIGH selecting LOAD. The
implementation of the E337 Receive Enable differs from
that of the E336.
A synchronous bus enable (SBUSEN) is provided for
normal, non-scan operation. The asynchronous bus disable
(ABUSDIS) disables the bus for scan mode.
The SYNCEN input allows either synchronous or
asynchronous re-enabling after disabling with ABUSDIS.
An alternative use is asynchronous-only operation with
ABUSDIS, in which case SYNCEN is tied LOW. SYNCEN
is implemented as an overriding SET control to the enable
flip-flop.
Scan mode is selected by a logic HIGH at the SCAN
input. Scan input data is shifted in through S-IN, and output
data appears at the Q
2
output.
All registers are clocked on the rising edge of CLK.
Additional lead-frame grounding is provided through the
ground pins (GND) which should be connected to 0V. The
GND pins are not electrically connected to the chip.
M9999-032206
hbwhelp@micrel.com or (408) 955-1690
Rev.: F
Amendment: /0
1
Issue Date: March 2006
Micrel, Inc.
SY10E337
SY100E337
PACKAGE/ORDERING INFORMATION
B
0
A
0
ABUSDIS
SBUSEN
SYNCEN
Ordering Information
(1)
V
CCO
Part Number
SY10E337JC
18
17
Package
Type
J28-1
J28-1
J28-1
J28-1
J28-1
J28-1
J28-1
J28-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Package
Marking
SY10E337JC
SY10E337JC
SY100E337JC
SY100E337JC
SY10E337JZ with
Pb-Free bar-line indicator
SY10E337JZ with
Pb-Free bar-line indicator
SY100E337JZ with
Pb-Free bar-line indicator
SY100E337JZ with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Matte-Sn
Matte-Sn
Matte-Sn
Matte-Sn
25 24 23 22 21 20 19
Q
0
SCAN
S-IN
TEN
V
EE
REN
CLK
A
1
26
27
28
1
2
3
4
5
6
7
8
9
10 11
TOP VIEW
PLCC
J28-1
16
15
14
13
12
GND
BUS
0
V
CC
Q
1
V
CCO
BUS
1
GND
SY10E337JCTR
(2)
SY100E337JC
SY100E337JCTR
(2)
SY10E337JZ
(3)
SY10E337JZTR
(2, 3)
SY100E337JZ
(3)
SY100E337JZTR
(2, 3)
BUS
2
V
CCO
28-Pin PLCC (J28-1)
Notes:
GND
Q
2
B
1
A
2
B
2
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.
M9999-032206
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
SY10E337
SY100E337
28-PIN PLCC (J28-1)
Rev. 03
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 1 (408) 944-0800
FAX
+ 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.
© 2006 Micrel, Incorporated.
M9999-032206
hbwhelp@micrel.com or (408) 955-1690
5
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