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HD74ALVC162835
18-bit Universal Bus Driver with 3-state Outputs
ADE-205-201E (Z) Preliminary 6th. Edition January 1999 Description
The HD74ALVC162835 is an 18-bit universal bus driver designed for 2.3 V to 3.6 V VCC operation. Data flow from A to Y is controlled by the output enable (OE). The device operates in the transparent mode when the latch enable (LE) is high. When LE is low, the A data is latched if the clock (CLK) input is held at a high or low logic level. If the LE is low, the A data is stored in the latch/flip flop on the low to high transition of CLK. When OE is 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. All outputs, which are designed to sink up to 12 mA, include 26 resistors to reduce overshoot and undershoot.
Features
* Meets "PC SDRAM registered DIMM design support document, Rev. 1.2" * 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 12 mA (@V CC = 3.0 V) * All outputs have equivalent 26 series resistors, so no external resistors are required
HD74ALVC162835
Function Table
Inputs OE H L L L L L H: L: X: Z: : Note: LE X H H L L L CLK X X X L or H A X L H L H X Output Y Z L H L H Y0 *1
High level Low level Immaterial High impedance Low to high transition 1. Output level before the indicated steady-state input conditions were established.
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HD74ALVC162835
Pin Arrangement
NC 1 NC 2 Y1 3 GND 4 Y2 5 Y3 6 VCC 7 Y4 8 Y5 9 Y6 10 GND 11 Y7 12 Y8 13 Y9 14 Y10 15 Y11 16 Y12 17 GND 18 Y13 19 Y14 20 Y15 21 VCC 22 Y16 23 Y17 24 GND 25 Y18 26 OE 27 LE 28 (Top view)
56 GND 55 NC 54 A1 53 GND 52 A2 51 A3 50 VCC 49 A4 48 A5 47 A6 46 GND 45 A7 44 A8 43 A9 42 A10 41 A11 40 A12 39 GND 38 A13 37 A14 36 A15 35 VCC 34 A16 33 A17 32 GND 31 A18 30 CLK 29 GND
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HD74ALVC162835
Absolute Maximum Ratings
Item Supply voltage range Input voltage range
*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 range Input clamp current Output clamp current
VI < 0 VO < 0 or VO > VCC VO = 0 to VCC
Continuous output current VCC, GND current / pin Maximum power dissipation at Ta = 55C (in still air) *3 Storage temperature range
TSSOP
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 condition" is not implied. Exposure to absolutemaximum-rated conditions for extended periods may affect device reliability. Notes: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp current ratings are observed. 2. The input and output positive-voltage ratings may be exceeded up to 4.6 V if the input and output clamp-current ratings are observed. 3. The maximum power dissipation is calculated using a junction temperature of 150C and 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 free-air temperature t/v Ta 0 -40 Max 3.6 VCC VCC -6 -8 -12 6 8 12 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 or floating control pins must be held high or low.
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HD74ALVC162835
Logic Diagram
OE CLK LE A1
27 30 28 54
1D C1 CLK
3
Y1
To seventeen other channels
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HD74ALVC162835
Electrical Characteristics
Ta = -40 to 85C Item Input voltage Symbol VCC (V) VIH 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 3.0 2.7 3.0 VOL 2.3 to 3.6 2.3 2.3 3.0 2.7 3.0 Input current Off state output current I IN I OZ I CC 3.6 3.6 3.6 3.0 to 3.6 Min 1.7 2.0 -- -- VCC-0.2 1.9 1.7 2.4 2.0 2.0 -- -- -- -- -- -- -- -- -- -- Max -- -- 0.7 0.8 -- -- -- -- -- -- 0.2 0.4 0.55 0.55 0.6 0.8 5.0 10 40 750 A A A A V V I OH = -100 A I OH = -4 mA, VIH = 1.7 V I OH = -6 mA, VIH = 1.7 V I OH = -6 mA, VIH = 2.0 V I OH = -8 mA, VIH = 2.0 V I OH = -12 mA, VIH = 2.0 V I OL = 100 A I OL = 4 mA, VIL = 0.7 V I OL = 6 mA, VIL = 0.7 V I OL = 6 mA, VIL = 0.8 V I OL = 8 mA, VIL = 0.8 V I OL = 12 mA, VIL = 0.8 V VIN = VCC or GND VOUT = VCC or GND VIN = VCC or GND One input at (V CC-0.6)V, other inputs at V CC or GND V Unit Test Conditions V
Quiescent supply current I CC
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HD74ALVC162835
Switching Characteristics (Ta = -40 to 85C)
Item Maximum clock frequency Symbol VCC (V) f max 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 Input capacitance CIN 3.3 3.3 Output capacitance CO 3.3 Min 150 150 150 1.0 -- 1.0 1.3 -- 1.3 1.4 -- 1.4 1.4 -- 1.1 1.0 -- 1.3 3.0 3.0 3.0 Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 4.5 6.0 7.0 Max -- -- -- 5.0 5.0 4.2 5.9 5.8 5.1 6.3 6.1 5.4 6.3 6.5 5.5 4.7 4.9 4.5 7.0 9.0 9.0 pF pF Control inputs Data inputs Y ports ns OE Y ns OE Y CLK Y LE Y ns A Y Unit MHz From (Input) To (Output)
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HD74ALVC162835
Switching Characteristics (Ta = -40 to 85C) (cont)
Item Setup time Symbol VCC (V) t su 2.50.2 2.7 3.30.3 2.50.2 2.7 3.30.3 2.50.2 2.7 3.30.3 Hold time th 2.50.2 2.7 3.30.3 2.50.2 2.7 3.30.3 Pulse width tw 2.50.2 2.7 3.30.3 2.50.2 2.7 3.30.3 Min 2.2 2.1 1.7 1.9 1.6 1.5 1.3 1.1 1.0 0.6 0.6 0.7 1.4 1.7 1.4 3.3 3.3 3.3 3.3 3.3 3.3 Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Max -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- CLK "H" or "L" ns LE "H" Data after LE CLK "H" or "L" ns Data after CLK Data before LE CLK "L" Data before LE CLK "H" Unit ns From (Input) Data before CLK
Switching Characteristics (Ta = 0 to 85C)
Item Propagation delay time
CL=0pF
*1
Symbol VCC (V)
Min
Typ -- -- -- -- -- --
Max 2.0 4.5 2.9 4.5 4.8 2.5
Unit ns
FROM (Input) A
TO (Output) Y
t PLH , t PHL 3.30.165 0.9 3.30.165 1.0 3.30.165 1.4 3.30.165 1.9 t SSO
*1 *1, 2
CL=50pF CL=0pF
*1
CLK
Y
CL=50pF CL=50pF
3.30.165 1.9 3.30.165 1.0
CLK, A volts/ ns
Y Y
Output rise / fall time
CL=50pF
t TLH, tTHL
Notes: 1. This parameter is characterized but not tested. 2. t SSO : Simultaneous switching output time.
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HD74ALVC162835
Operating Characteristics (Ta = 25C)
Item Symbol VCC = 2.50.2 V Typ Power dissipation Outputs enable Cpd capacitance Outputs disable 22.0 5.0 VCC = 3.30.3 V Typ 24.5 6.0 pF CL = 0, f = 10 MHz Unit Test Conditions
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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HD74ALVC162835
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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HD74ALVC162835
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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HD74ALVC162835
IV Characteristics for Register Output (Measured value)
Weak condition HIGH Vcc = 3.15 V, Ta = 85C VOH (V) 0.0 0 -10 -20 I OH (mA) -30 -40 -50 -60 -70 -80 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Strong condition HIGH Vcc = 3.45 V, Ta = 0C VOH (V) 0.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
-20
I OH (mA) 12
-40
-60
-80
-100
HD74ALVC162835
Weak condition LOW Vcc = 3.15 V, Ta = 85C 80 70 60 I OL (mA) 50 40 30 20 10 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
VOL (V)
Strong condition LOW Vcc = 3.45 V, Ta = 0C 100
80
I OL (mA)
60
40
20
0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
VOL (V)
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HD74ALVC162835
Package Dimensions
Unit : mm
14.00 -0.1 56
+0.3
29 6.10 +0.3 -0.1
1 0.20 +0.1 -0.05
0.50 0.08 M
28
0.15 0.05
0.40 Max 1.20 max 0.05 Min
8.10 0.3 10 Max 0.50 0.1
0.10
Hitachi code EIAJ code JEDEC code
TTP-56D -- --
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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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