Datasheet 74HCT9323D, 74HC9323D Datasheet (Philips)

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74HC/HCT9323A

Programmable ripple counter with
oscillator (3-State)

Objective specification 1995 Oct 27

INTEGRATED CIRCUITS

IC06 Data Handbook

Philips Semiconductors Objective specification

74HC/HCT9323A

Programmable ripple counter with oscillator
(3-State)

2

1995 Oct 27

FEATURES

•8-pin space saving package

•Programmable 3-stage ripple counter

•Suitable for over-tone crystal application up to 85MHz

(V

CC

= 5V10%)

•3-State output buffer

•Two internal capacitors

•Recommended operating range for use with third overtone

crystals 3V to 6V

•Oscillator stop function (MR)

•Output capability:

bus driver  (15 LSTTL)

•I

CC

category: MSI

APPLICATIONS

•Control counters

•Timers

•Frequency dividers

•Time-delay circuits

•CIO (Compact Integrated Oscillator)

•Third-overtone crystal operation

DESCRIPTION

The 74HC/HCT9323A are high-speed Si-gate CMOS devices. They
are specified in compliance with JEDEC standard no. 7A.

The HC/HCT 9323A are oscillators designed for quartz crystal
combined with a programmable 3-State counter, a 3-State output
buffer and an overriding asynchronous master reset (MR

). With the
two select inputs S1 and S2 the counter can be switched in the
divide-1, 2, 4 or 8 mode. If left floating the clock is divided by 8. The
oscillator is designed to operate either in the fundamental or third
overtone mode depending on the crystal and external components
applied. On-chip capacitors minimize external component count for
third overtone crystal applications.

The oscillator may be replaced by an external clock signal at input
X1. In this event the other oscillator pin (X2) must be floating. The
counter advances on the negative-going transition of X1. A LOW
level on MR

resets the counter, stops the oscillator and sets the

output buffer in the 3-State condition. MR

can be left floating since

an internal pull-up resistor will make the MR

inactive. In the HCT

version, the MR

input and the two mode select pins S1 and S2 are
TTL compatible, but the X1 input has CMOS input switching levels
and may be driven by a TTL output using a pull-up resistor
connected to V

CC

.

QUICK REFERENCE DA TA

GND = 0V; T

amb

= 25°C, tr = tf = 6ns

SYMBOL

PARAMETER

CONDITIONS

T

amb

= 25°C; GND = 0V

TYPICAL UNIT

HC HCT

t

PLH

t

PHL

Propagation delay
X1 to OUT (S1 = S2 = LOW)

CL = 50pF; VCC = 5V 8 8 ns

f

max

Maximum clock frequency 150 150 MHz

C

I

Input capacitance except X1 and X2 3.5 3.5 pF

C

PD

Power dissipation
capacitance per package

pF

NOTES:

C

PD

is used to determine the dynamic power dissipation (PD in µW):

P

D

=(CPD  V

CC

2

 fI) + (CL + V

CC

2

 fO) + (I

pull-up

 VCC)
where:
f

I

= inputfrequency in MHz..

f

O

= output frequency in MHz.

V

CC

= Supply voltage in V.

C

L

= Output load capacitance in pF.

I

pull-up

= Pull-up currents in µA.

For HC and HCT an external clock is applied to X1 with:

t

r

= tf  6ns, VI is GND to VCC, MR = HIGH.

I

pull-up

is the summation of –II (µA) of S1 and S2 inputs at the LOW state.

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE ORDER NUMBER DWG NUMBER

8-Pin Plastic SO 0°C to +70°C 74HC/HCT9323A D SOT96-1

Philips Semiconductors Objective specification

74HC/HCT9323A

Programmable ripple counter with oscillator
(3-State)

1995 Oct 27

3

PIN CONFIGURATION

SK00013

1
2
3
45

6

7

8

OUT

S2
S1

GND

V

CC

X1
X2
MR

PIN DESCRIPTION

PIN NUMBER SYMBOL FUNCTION

1 OUT Counter output

3, 2 S1-S2

Mode select inputs for

divide by 1, 2, 4 or 8
4 GND Ground (0V)
5 MR Master reset (active LOW)
6 X2 Oscillator pin
7 X1 Clock input/oscillator pin
8 V

CC

Positive supply voltage

IEC LOGIC SYMBOL

X1

7
5

MR

CP

C

D

S1
S2 OUT

X2

3
21

6

SK00014

FUNCTION T ABLE

INPUTS OUTPUTS

S1 S2 OUT

0 0 f

I

0 1 fI/2
1 0 fI/4
1 1 fI/8

FUNCTIONAL DIAGRAM

X1

7

5 MR

CP

C

D

S1 S2 OUT

X2

32 1

6

3-STAGE BINARY COUNTER

AND DECODER

SK00015

Philips Semiconductors Objective specification

74HC/HCT9323A

Programmable ripple counter with oscillator
(3-State)

1995 Oct 27

4

LOGIC DIAGRAM

CP Q

FF

R

CP Q

FF

R

CP Q

FF

R

DECODER

X2
X1

2pF

V

CC

MR

OUT

V

CC

2pF

V

CC

V

CC

V

CC

Internal capacitors typical 2pF each, including stray capacitors on pins X1 and X2,
total capacitance will be typical 7pF per pin

SK00016

Philips Semiconductors Objective specification

74HC/HCT9323A

Programmable ripple counter with oscillator
(3-State)

1995 Oct 27

5

SO8: plastic small outline package; 8 leads; body width 3.9mm SOT96-1

Philips Semiconductors Objective specification

74HC/HCT9323A

Programmable ripple counter with oscillator
(3-State)

Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing
or modification.

LIFE SUPPORT APPLICA TIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.

This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.

Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone [phone]

DEFINITIONS

Data Sheet Identification Product Status Definition

Objective Specification

Preliminary Specification

Product Specification

Formative or in Design

Preproduction Product

Full Production

This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.

This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.

Philips Semiconductors and Philips Electronics North America Corporation

register eligible circuits under the Semiconductor Chip Protection Act.

 Copyright Philips Electronics North America Corporation 1995

All rights reserved. Printed in U.S.A.