SY10E136JC datasheet(1/9 Pages) MICREL

tên linh kiện	SY10E136JC

Giải thích chi tiết về linh kiện	6-BIT UNIVERSAL UP/DOWN COUNTER

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nhà sản xuất	MICREL [Micrel Semiconductor]

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SY10E136

SY100E136

Micrel, Inc.

M9999-032006

hbwhelp@micrel.com or (408) 955-1690

Function

D0–D5

Preset Data Inputs

Q0–Q5

Differential Data Outputs

S1, S2

Mode Control Pins

MR

Master Reset

CLK

Clock Input

COUT, COUT

Carry Out Output (Active LOW)

CLOUT

Look-Ahead-Carry Output

CIN

Carry-In Input (Active LOW)

CLIN

Look-Ahead-Carry Input

VCCO

VCC to Output

DESCRIPTION

FEATURES

s 550MHz count frequency

s Extended 100E VEE range of –4.2V to –5.5V

s Look-ahead-carry input and output

s Fully synchronous up and down counting

s Asynchronous Master Reset

s Internal 75K

Ω input pull-down resistors

s Available in 28-pin PLCC package

The SY10/100E136 are 6-bit synchronous, presettable,

cascadable universal counters. These devices generate

a look-ahead-carry output and accept a look-ahead-carry

input. These two features allow for the cascading of

multiple E136s for wider bit width counters that operate

at very nearly the same frequency as the stand-alone

counter.

The CLOUT output will pulse LOW for one clock cycle

one count before the E136 reaches terminal count. The

COUT output will pulse LOW for one clock cycle when

the counter reaches terminal count. For more information

on utilizing the look-ahead-carry features of the device,

please refer to the applications section of this data sheet.

The differential COUT output facilitates the E136's use in

programmable divider and self-stopping counter

applications.

Unlike the H136 and other similar universal counter

designs, the E136 carry-out and look-ahead-carry-out

signals are registered on chip. This design alleviates the

glitch problem seen on many counters where the carry-

out signals are merely gated. Because of this architecture,

there are some minor functional differences between the

E136 and H136 counters. The user, regardless of

familiarity with the H136, should read this data sheet

carefully. Note specifically (see block diagram) the

operation of the carry-out outputs and the look-ahead-

carry-in input when utilizing the Master Reset.

When left open, all of the input pins will be pulled

LOW via an input pulldown resistor. The Master Reset is

an asynchronous signal which, when asserted, will force

the Q outputs LOW.

The Q outputs need not be terminated for the E136 to

function properly. In fact, if these outputs will not be

used in a system, it is recommended that they be left

open to save power and minimize noise. This practice

will minimize switching noise which can reduce the

maximum count frequency of the device, or significantly

reduce margins against other noise in the system.

PIN NAMES

SY10E136

SY100E136

6-BIT UNIVERSAL

UP/DOWN COUNTER

Rev.: F

Amendment: 0

Issue Date:

March 2006

Số phần tương tự - SY10E136JC

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Micrel Semiconductor	SY10E136JC	119Kb / 8P	6-BIT UNIVERSAL UP/DOWN COUNTER
Micrel Semiconductor	SY10E136JCTR	119Kb / 8P	6-BIT UNIVERSAL UP/DOWN COUNTER

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Mô tả tương tự - SY10E136JC

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
ON Semiconductor	MC10E136	172Kb / 9P	6-BIT UNIVERSAL UP/DOWN COUNTER 1996 REV 2
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Fairchild Semiconductor	MM74C192	62Kb / 6P	Synchronous 4-Bit Up/Down Decade Counter . Synchronous 4-Bit Up/Down Binary Counter
Micrel Semiconductor	SY10E136	119Kb / 8P	6-BIT UNIVERSAL UP/DOWN COUNTER
Fairchild Semiconductor	DM74LS469	143Kb / 8P	8-Bit Up/Down Counter
ON Semiconductor	MC10E136	158Kb / 12P	5V ECL 6-Bit Universal Up/Down Counter November, 2006 ??Rev. 9
Toshiba Semiconductor	TC74HC191AP	441Kb / 12P	4-Bit Binary Up/Down Counter
Renesas Technology Corp	HD74HC668	222Kb / 11P	Synchronous UP/Down Decade Counter, Synchronous Up/Down 4-bit binary Counter
ON Semiconductor	MC10E136	164Kb / 12P	5VECL 6-Bit Universal Up/Down Counter November, 2006 ??Rev. 9
LSI Computer Systems	LS7055	89Kb / 6P	6 DECADE PREDETERMINING UP/DOWN COUNTER

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