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INTEGRATED CIRCUITS
74HC/HCT9323A Programmable ripple counter with oscillator (3-State)
Objective specification IC06 Data Handbook 1995 Oct 27
Philips Semiconductors
Philips Semiconductors
Objective specification
Programmable ripple counter with oscillator (3-State)
74HC/HCT9323A
FEATURES
* 8-pin space saving package * Programmable 3-stage ripple counter * Suitable for over-tone crystal application up to 85MHz * 3-State output buffer * Two internal capacitors * Recommended operating range for use with third overtone
crystals 3V to 6V (VCC = 5V"10%)
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 VCC.
* Oscillator stop function (MR) * Output capability: * ICC category: MSI
bus driver (15 LSTTL)
APPLICATIONS
* Control counters * Timers * Frequency dividers * Time-delay circuits * CIO (Compact Integrated Oscillator) * Third-overtone crystal operation
QUICK REFERENCE DATA
GND = 0V; Tamb = 25C, tr = tf = 6ns SYMBOL PARAMETER
CONDITIONS Tamb = 25C; GND = 0V HC
TYPICAL HCT 8 150 3.5
UNIT
tPLH tPHL fmax CI CPD
Propagation delay X1 to OUT (S1 = S2 = LOW) Maximum clock frequency Input capacitance except X1 and X2 Power dissipation capacitance per package
CL = 50pF; VCC = 5V
8 150 3.5
ns MHz pF pF
NOTES: CPD is used to determine the dynamic power dissipation (PD in W): = (CPD VCC2 fI) + (CL + VCC2 fO) + (Ipull-up VCC) PD where: = inputfrequency in MHz.. fI = output frequency in MHz. fO VCC = Supply voltage in V. = Output load capacitance in pF. CL Ipull-up = Pull-up currents in A. For HC and HCT an external clock is applied to X1 with: tr = tf v 6ns, VI is GND to VCC, MR = HIGH. Ipull-up is the summation of -II (A) of S1 and S2 inputs at the LOW state.
ORDERING INFORMATION
PACKAGES 8-Pin Plastic SO TEMPERATURE RANGE 0C to +70C ORDER NUMBER 74HC/HCT9323A D DWG NUMBER SOT96-1
1995 Oct 27
2
Philips Semiconductors
Objective specification
Programmable ripple counter with oscillator (3-State)
74HC/HCT9323A
PIN CONFIGURATION
IEC LOGIC SYMBOL
6 X2 CP MR CD 3 2 S1 S2 OUT 1
OUT S2 S1 GND
1 2 3 4
8 7 6 5
VCC X1 X2 MR
7 5
X1
SK00013
SK00014
PIN DESCRIPTION
PIN NUMBER 1 3, 2 4 5 6 7 8 SYMBOL OUT S1-S2 GND MR X2 X1 VCC FUNCTION Counter output Mode select inputs for divide by 1, 2, 4 or 8 Ground (0V) Master reset (active LOW) Oscillator pin Clock input/oscillator pin Positive supply voltage
FUNCTION TABLE
INPUTS S1 0 0 1 1 S2 0 1 0 1 OUTPUTS OUT fI fI/2 fI/4 fI/8
FUNCTIONAL DIAGRAM
6 X2 7 X1 CP 5 MR CD S1 S2 OUT 3-STAGE BINARY COUNTER AND DECODER
3
2
1
SK00015
1995 Oct 27
3
Philips Semiconductors
Objective specification
Programmable ripple counter with oscillator (3-State)
74HC/HCT9323A
LOGIC DIAGRAM
X2 X1 CP 2pF VCC FF 2pF VCC Q CP FF Q CP FF Q
R
R
R
DECODER VCC
VCC MR
VCC OUT
Internal capacitors typical 2pF each, including stray capacitors on pins X1 and X2, total capacitance will be typical 7pF per pin
SK00016
1995 Oct 27
4
Philips Semiconductors
Objective specification
Programmable ripple counter with oscillator (3-State)
74HC/HCT9323A
SO8: plastic small outline package; 8 leads; body width 3.9mm
SOT96-1
1995 Oct 27
5
Philips Semiconductors
Objective specification
Programmable ripple counter with oscillator (3-State)
74HC/HCT9323A
DEFINITIONS
Data Sheet Identification
Objective Specification
Product Status
Formative or in Design
Definition
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 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. 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.
Preliminary Specification
Preproduction Product
Product Specification
Full Production
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 APPLICATIONS 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. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 Philips Semiconductors and Philips Electronics North America Corporation register eligible circuits under the Semiconductor Chip Protection Act. (c) Copyright Philips Electronics North America Corporation 1995 All rights reserved. Printed in U.S.A.

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