SY10E137_06 [MICREL]
8-BIT RIPPLE COUNTER; 8位异步计数器型号: | SY10E137_06 |
厂家: | MICREL SEMICONDUCTOR |
描述: | 8-BIT RIPPLE COUNTER |
文件: | 总5页 (文件大小:67K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
7
8-BIT RIPPLE
COUNTER
SY10E137
SY100E137
FEATURES
DESCRIPTION
■ 1.8GHz min. count frequency
The SY10/100E137 are very high speed binary ripple
counters. The two least significant bits were designed
with very fast edge rates, while the more significant bits
maintain standard ECLinPS output edge rates. This allows
the counters to operate at very high frequencies, while
maintaining a moderate power dissipation level.
■ Extended 100E VEE range of –4.2V to –5.5V
■ Synchronous and asynchronous enable pins
■ Differential clock input and data output pins
■ VBB output for single-ended use
The devices are ideally suited for multiple frequency
clock generation, as well as for counters in high-
performance ATE time measurement boards.
■ Asynchronous Master Reset
■ Internal 75KΩ input pull-down resistors
■ Available in 28-pin PLCC packge
Both asynchronous and synchronous enables are
available to maximize the device's flexibility for various
applications. The asynchronous enable input, A_Start,
when asserted, enables the counter while overriding any
synchronous enable signals. The E137 features XOR'ed
enable inputs, EN1 and EN2, which are synchronous to
the CLK input. When only one synchronous enable is
asserted, the counter becomes disabled on the next CLK
transition. All outputs remain in the previous state poised
for the other synchronous enable or A_Start to be
asserted in order to re-enable the counter. Asserting
both synchronous enables causes the counter to become
enabled on the next transition of the CLK. EN1 (or EN2)
and CLK edges are coincident. Sufficient delay has been
inserted in the CLK path (to compensate for the XOR
gate delay and the internal D-flip-flop set-up time) to
ensure that the synchronous enable signal is clocked
correctly; hence, the counter is disabled.
PIN NAMES
Pin
CLK, CLK
Q0–Q7, Q0–Q7
A_Start
EN1, EN2
MR
Function
Differential Clock Inputs
Differential Q Outputs
Asynchronous Enable Input
Synchronous Enable Inputs
Asynchronous Master Reset
Switching Reference Output
VCC to Output
VBB
VCCO
The E137 can also be driven single-endedly utilizing
the VBB output supply as the voltage reference for the
CLK input signal. If a single-ended signal is to be used,
the VBB pin should be connected to the CLK input and
bypassed to ground via a 0.01µF capacitor. VBB can
only source/sink 0.5mA; therefore, it should be used as
a switching reference for the E137 only.
All input pins left open will be pulled LOW via an input
pull-down resistor. Therefore, do not leave the differential
CLK inputs open. Doing so causes the current source
transistor of the input clock gate to become saturated,
thus upsetting the internal bias regulators and
jeopardizing the stability of the device.
The asynchronous Master Reset resets the counter to
an all zero state upon assertion.
Rev.: E
Amendment:/0
M9999-032006
hbwhelp@micrel.com or (408) 955-1690
1
Issue Date: March 2006
SY10E137
SY100E137
Micrel, Inc.
PACKAGE/ORDERING INFORMATION
Ordering Information(1)
Package
Type
Operating
Range
Package
Marking
Lead
Finish
Part Number
25 24 23 22 21 20 19
SY10E137JC
SY10E137JCTR(2)
J28-1
J28-1
J28-1
Commercial
Commercial
Commercial
SY10E137JC
SY10E137JC
SY100E137JC
Sn-Pb
Sn-Pb
Sn-Pb
A_Start
26
27
28
1
18
17
16
15
14
13
12
Q4
EN
1
2
Q
4
EN
V
CC
SY100E137JC
PLCC
TOP VIEW
J28-1
V
EE
Q
3
SY100E137JCTR(2)
SY10E137JZ(3)
J28-1
J28-1
Commercial
Commercial
SY100E137JC
Sn-Pb
CLK
CLK
Q
3
2
Q
Q
2
2
3
SY10E137JZ with
Pb-Free bar-line indicator
Matte-Sn
V
BB
4
5
6
7
8
9
10 11
SY10E137JZTR(2, 3)
SY100E137JZ(3)
J28-1
J28-1
Commercial
Commercial
SY10E137JZ with
Pb-Free bar-line indicator
Matte-Sn
Matte-Sn
SY100E137JZ with
Pb-Free bar-line indicator
SY100E137JZTR(2, 3)
J28-1
Commercial
SY100E137JZ with
Pb-Free bar-line indicator
Matte-Sn
28-Pin PLCC (J28-1)
Notes:
1. Contact factory for die availability. Dice are guaranteed at T = 25°C, DC Electricals only.
A
2. Tape and Reel.
3. Pb-Free package is recommended for new designs.
M9999-032006
hbwhelp@micrel.com or (408) 955-1690
2
SY10E137
SY100E137
Micrel, Inc.
BLOCK DIAGRAM
A_Start
R
EN1
EN2
D
Q
Q
Q0
Q0
Q1
Q1
Q6
Q6
Q7 Q7
CLK
CLK
Q
Q
Q
Q
Q
Q
Q
Q
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK
D
D
D
D
D
R
R
R
R
MR
VBB
(1)
SEQUENTIAL TRUTH TABLE
Function
Reset
EN1
EN2 A_Start MR
CLK
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
X
X
X
H
X
L
L
L
L
L
L
L
L
Count
L
L
L
L
L
L
L
L
L
L
L
L
Z
Z
Z
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
L
H
Stop
H
H
L
L
L
L
L
L
Z
Z
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
Async. Start
H
H
L
L
L
L
H
H
H
L
L
L
Z
Z
Z
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
L
L
H
L
H
L
Count
L
L
L
L
L
L
L
L
L
L
L
L
Z
Z
Z
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
L
L
H
L
L
H
L
H
Stop
L
L
H
H
L
L
L
L
Z
Z
L
L
L
L
L
L
L
L
H
H
L
L
L
L
H
H
Sync. Start
H
H
H
H
H
H
L
L
L
L
L
L
Z
Z
Z
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
L
L
H
H
H
L
L
H
L
Stop
H
H
L
L
L
L
L
L
Z
Z
L
L
L
L
L
L
L
L
H
H
H
H
L
L
L
L
Count
L
L
L
L
L
L
L
L
L
L
L
L
Z
Z
Z
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
L
H
H
H
L
H
Reset
X
X
X
H
X
L
L
L
L
L
L
L
L
Note:
1. Z = LOW-to-HIGH transition
M9999-032006
hbwhelp@micrel.com or (408) 955-1690
3
SY10E137
SY100E137
Micrel, Inc.
DC ELECTRICAL CHARACTERISTICS
VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND
TA = 0°C
TA = +25°C
TA = +85°C
Symbol
Parameter
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit
Condition
VBB
Output Reference
Voltage
V
—
10E –1.38
100E –1.38
—
—
–1.27 –1.35
–1.26 –1.38
—
—
–1.25 –1.31
–1.26 –1.38
—
—
–1.19
–1.26
IIH
Input HIGH Current
—
—
150
—
—
150
—
—
150
µA
—
—
IEE
Power Supply
Current
mA
10E
100E
—
—
121 145
121 145
—
—
121
121
145
145
—
—
121
139
145
167
AC ELECTRICAL CHARACTERISTICS
VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND
TA = 0°C
TA = +25°C
TA = +85°C
Symbol
fCOUNT
tPD
Parameter
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit
Condition
Max. Count Frequency
1800 2200
—
1800 2200
—
1800 2200
—
MHz
ps
—
—
Propagation Delay to Output
CLK to Q0
CLK to Q1
CLK to Q2
CLK to Q3
CLK to Q4
CLK to Q5
CLK to Q6
CLK to Q7
1300 1700 2150 1300 1700 2150 1350 1750 2200
1600 2025 2500 1600 2050 2500 1650 2100 2550
1950 2425 2925 1950 2450 2925 2025 2500 3000
2275 2750 3350 2275 2775 3350 2350 2850 3425
2625 3125 3750 2625 3150 3750 2700 3225 3625
2950 3450 4150 2950 3475 4150 3050 3550 4250
3250 3775 4450 3250 3800 4450 3375 3925 4600
3575 4075 4800 3575 4125 4800 3700 4250 4950
950 1325 1700 950 1325 1700 950 1325 1700
700 1000 1300 700 1000 1300 700 1000 1300
A_Start to Q0
MR to Q0
tS
Set-up Time (EN1, EN2)
Hold Time (EN1, EN2)
0
–150
—
—
—
0
–150
—
—
—
0
–150
—
—
—
ps
ps
ps
—
—
—
tH
300 150
400 200
300 150
400 200
300 150
400 200
tRR
Reset Recovery Time
MR, A_Start
tPW
Minimum Pulse Width
CLK, MR, A_Start
400
—
—
400
—
—
400
—
—
ps
—
VPP
Minimum Input Swing (CLK) 0.25
—
—
1.0 0.25
—
—
1.0 0.25
—
—
1.0
V
V
1
VCMR
Com. Mode Range (CLK)
–0.4
–2.0 –0.4
–2.0 –0.4
–2.0
—
—
tr
tf
Rise/Fall Time, 20% to 80%
ps
Q0, Q1
Q2–Q7
150
275
—
—
400 150
600 275
—
—
400 150
600 275
—
—
400
600
Note:
1. Minimum input swing for which AC parameters are guaranteed. Full DC ECL output swings will be generated with only 50mV input swings.
M9999-032006
hbwhelp@micrel.com or (408) 955-1690
4
SY10E137
SY100E137
Micrel, Inc.
28-PIN PLCC (J28-1)
Rev. 03
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 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.
M9999-032006
hbwhelp@micrel.com or (408) 955-1690
5
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