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HD74ALVCH16831
1-to 4 Address Register / Driver with 3-state Outputs
ADE-205-194 (Z) Preliminary 1st. Edition March 1998 Description
This 1-bit to 4-bit address register / driver is designed for 2.3 V to 3.6 V VCC operation. The device is ideal for use in applications in which a single address bus is driving four separate memory locations. The HD74ALVCH16831 can be used as a buffer or a register, depending on the logic level of the select (SEL) input. When SEL is logic high, the device is in the buffer mode. The outputs follow the inputs and are controlled by the two output enable (OE) controls. Each OE controls two groups of nine outputs. When SEL is logic low, the device is in the register mode. The register is an edge triggered D-type flip flop. On the positive transition of the clock (CLK) input, data set up at the A inputs is stored in the internal registers. OE controls operate the same as in buffer mode. When OE is logic low, the outputs are in a normal logic state (high or low logic level). When OE is logic high, the outputs are in the high impedance state. To ensure the high impedance state during power up or power down, OE should be tied to V CC through a pullup registor; the minimum value of the registor is determined by the current sinking capability of the driver. SEL and OE do not affect the internal operation of the flip flops. Old data can be retained or new data can be entered while the outputs are in the high impedance state. Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
Features
* VCC = 2.3 V to 3.6 V * Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25C) * Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25C) * High output current 24 mA (@VCC = 3.0 V) * Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
HD74ALVCH16831
Function Table
Inputs OE H L L L L SEL X H H L L CLK X X X A X L H L H Z L H L H Output Y
H : High level L : Low level X : Immaterial Z : High impedance : Low to high transition
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HD74ALVCH16831
Pin Arrangement
4Y1 3Y1 GND 2Y1 1Y1 VCC NC A1 GND NC A2 GND NC A3 VCC NC A4 GND CLK OE1 OE2 SEL GND A5 A6 VCC A7 NC GND A8 NC GND A9 NC VCC 4Y9 3Y9 GND 2Y9 1Y9
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
1Y2 2Y2 GND 3Y2 4Y2 VCC 1Y3 2Y3 GND 3Y3 4Y3 GND 1Y4 2Y4 VCC 3Y4 4Y4 GND 1Y5 2Y5 3Y5 4Y5 GND 1Y6 2Y6 VCC 3Y6 4Y6 GND 1Y7 2Y7 GND 3Y7 4Y7 VCC 1Y8 2Y8 GND 3Y8 4Y8
(Top view)
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HD74ALVCH16831
Absolute Maximum Ratings
Item Supply voltage Input voltage
*1 *1, 2
Symbol VCC VI VO I IK I OK IO I CC or IGND PT Tstg
Ratings -0.5 to 4.6 -0.5 to 4.6 -0.5 to VCC +0.5 -50 50 50 100 1 -65 to 150
Unit V V V mA mA mA mA W C
Conditions
Output voltage
Input clamp current Output clamp current Continuous output current VCC, GND current / pin Maximum power dissipation at Ta = 55C (in still air) *3 Storage temperature Notes:
VI < 0 VO < 0 or VO > VCC VO = 0 to VCC
TVSOP
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability. 1. The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed. 2. This value is limited to 4.6 V maximum. 3. The maximum package power dissipation is calculated using a junction temperature of 150C and a board trace length of 750 mils.
Recommended Operating Conditions
Item Supply voltage Input voltage Output voltage High level output current Symbol VCC VI VO I OH Min 2.3 0 0 -- -- -- Low level output current I OL -- -- -- Input transition rise or fall rate Operating temperature t / v Ta 0 -40 Max 3.6 VCC VCC -12 -12 -24 12 12 24 10 85 ns / V C mA Unit V V V mA VCC = 2.3 V VCC = 2.7 V VCC = 3.0 V VCC = 2.3 V VCC = 2.7 V VCC = 3.0 V Conditions
Note: Unused control inputs must be held high or low to prevent them from floating.
4
HD74ALVCH16831
Logic Diagram
OE1 OE2 CLK A1
20 5 21 19 8 4
1Y1 2Y1 3Y1 4Y1
CLK
2
D
Q
1
SEL
22
To eight other channels
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HD74ALVCH16831
Electrical Characteristics (Ta = -40 to 85C)
Item Input voltage Symbol VIH VCC (V) 2.3 to 2.7 2.7 to 3.6 VIL 2.3 to 2.7 2.7 to 3.6 Output voltage VOH 2.3 to 3.6 2.3 2.3 2.7 3.0 3.0 VOL 2.3 to 3.6 2.3 2.3 2.7 3.0 Input current I IN I IN (hold) 3.6 2.3 2.3 3.0 3.0 3.6 Off state output current I OZ I CC Note: 3.6 3.6 3.0 to 3.6 Min 1.7 2.0 -- -- VCC-0.2 2.0 1.7 2.2 2.4 2.0 -- -- -- -- -- -- 45 -45 75 -75 -- -- -- -- Max -- -- 0.7 0.8 -- -- -- -- -- -- 0.2 0.4 0.7 0.4 0.55 5 -- -- -- -- 500 10 40 750 A A A A V I OH = -100 A I OH = -6 mA, VIH = 1.7 V I OH = -12 mA, VIH = 1.7 V I OH = -12 mA, VIH = 2.0 V I OH = -12 mA, VIH = 2.0 V I OH = -24 mA, VIH = 2.0 V I OL = 100 A I OL = 6 mA, VIL = 0.7 V I OL = 12 mA, VIL = 0.7 V I OL = 12 mA, VIL = 0.8 V I OL = 24 mA, VIL = 0.8 V VIN = VCC or GND VIN = 0.7 V VIN = 1.7 V VIN = 0.8 V VIN = 2.0 V VIN = 0 to 3.6 V *1 VOUT = VCC or GND VIN = VCC or GND VIN = one input at (VCC-0.6) V, other inputs at V CC or GND Unit Test Conditions V
Quiescent supply current I CC
1. This is the bus hold maximum dynamic current required to switch the input from one state to another.
6
HD74ALVCH16831
Switching Characteristics (Ta = -40 to 85C)
Item Symbol VCC (V) 2.50.2 2.7 3.30.3 Propagation delay time t PLH t PHL 2.50.2 2.7 3.30.3 2.50.2 2.7 3.30.3 2.50.2 2.7 3.30.3 Output enable time t ZH t ZL 2.50.2 2.7 3.30.3 Output disable time t HZ t LZ 2.50.2 2.7 3.30.3 Setup time t su 2.50.2 2.7 3.30.3 Hold time th 2.50.2 2.7 3.30.3 Pulse width tw 2.50.2 2.7 3.30.3 Input capacitance CIN 3.3 3.3 Output capacitance CO 3.3 Min 150 150 150 1.2 -- 1.6 1.1 -- 1.5 1.3 -- 1.7 1.1 -- 1.2 1.4 -- 1.6 2.0 2.0 1.6 0.7 0.5 1.1 3.3 3.3 3.3 -- -- -- Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 4.5 5.0 7.5 Max -- -- -- 4.0 4.1 3.6 4.5 4.4 3.9 5.2 5.2 4.4 5.1 5.0 4.3 5.5 4.7 4.5 -- -- -- -- -- -- -- -- -- -- -- -- pF pF Control inputs Data inputs ns ns ns ns OE Y ns OE Y SEL Y CLK Y ns A Y Unit MHz FROM (Input) TO (Output)
Maximum clock frequency f max
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HD74ALVCH16831
Test Circuit
See under table 500 S1 OPEN GND
*1 CL
500
Load Circuit for Outputs Symbol t PLH / t PHL t su / t h / t w t ZH/ t HZ t ZL / t LZ CL Note: 1.
Vcc=2.50.2V Vcc=2.7V, 3.30.3V
OPEN GND 2 x VCC 30 pF
OPEN GND 6.0 V 50 pF
CL includes probe and jig capacitance.
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HD74ALVCH16831
Waveforms - 1
tr 90 % Input 10 % t PLH Vref 90 % Vref 10 % t PHL tf VIH GND
VOH Output Vref Vref VOL
Waveforms - 2
tr 90 % Timing Input 10 % tsu Vref th GND VIH Data Input Vref Vref GND tw VIH Input Vref Vref GND VIH
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HD74ALVCH16831
Waveforms - 3
tf Output Control 90 % Vref 10 % t ZL Vref t ZH Waveform - B Vref t HZ Vref2 10 % t LZ tr 90 % Vref GND VOH1 Waveform - A Vref1 VOL VOH VOL1 TEST VIH Vref Vref1 Vref2 VOH1 VOL1 Notes: 1.
Vcc=2.50.2V Vcc=2.7V, 3.30.3V
VIH
VCC
2.7 V
1/2 VCC 1.5 V VOL +0.15 V VOL +0.3 V VOH-0.15 V VOH-0.3 V VCC GND 3.0 V GND
2. 3. 4.
All input pulses are supplied by generators having the following characteristics : PRR 10 MHz, Zo = 50 , t r 2.0 ns, tf 2.0 ns. (VCC = 2.50.2 V) PRR 10 MHz, Zo = 50 , t r 2.5 ns, tf 2.5 ns. (VCC = 2.7 V, 3.30.3 V) Waveform - A is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform - B is for an output with internal conditions such that the output is high except when disabled by the output control. The output are measured one at a time with one transition per measurement.
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HD74ALVCH16831
Package Dimensions
Unit : mm
17.10 Max 80 41 6.20 Max 1 0.23 Max 0.40 0.07 M 0.16 Typ 40
8.40 Max 12 Max 0.75 Max
0.08
1.20 max
0.15 Min
Hitachi code EIAJ code JEDEC code
-- -- --
11
Cautions
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi's or any third party's patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party's rights, including intellectual property rights, in connection with use of the information contained in this document. 2. Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However, contact Hitachi's sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi's sales office for any questions regarding this document or Hitachi semiconductor products.
Hitachi, Ltd.
Semiconductor & Integrated Circuits. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109
URL
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Hitachi Semiconductor (America) Inc. 179 East Tasman Drive, San Jose,CA 95134 Tel: <1> (408) 433-1990 Fax: <1>(408) 433-0223 Hitachi Europe GmbH Electronic components Group Dornacher Strae 3 D-85622 Feldkirchen, Munich Germany Tel: <49> (89) 9 9180-0 Fax: <49> (89) 9 29 30 00 Hitachi Europe Ltd. Electronic Components Group. Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 778322 Hitachi Asia Pte. Ltd. 16 Collyer Quay #20-00 Hitachi Tower Singapore 049318 Tel: 535-2100 Fax: 535-1533 Hitachi Asia Ltd. Taipei Branch Office 3F, Hung Kuo Building. No.167, Tun-Hwa North Road, Taipei (105) Tel: <886> (2) 2718-3666 Fax: <886> (2) 2718-8180 Hitachi Asia (Hong Kong) Ltd. Group III (Electronic Components) 7/F., North Tower, World Finance Centre, Harbour City, Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong Tel: <852> (2) 735 9218 Fax: <852> (2) 730 0281 Telex: 40815 HITEC HX
Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.

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