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HD74ALVCH16373
16-bit Transparent D-type Latches with 3-state Outputs
ADE-205-138A (Z) 2nd. Edition December 1999 Description
The HD74ALVCH16373 is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. It can be used as two 8-bit latches or one 16-bit latch. When the latch enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the levels set up at the D inputs. 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) * Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
Function Table
Inputs OE L L L H LE H H L X D H L X X H L Q0 *1 Z Output Q
H : High level L : Low level X : Immaterial Z : High impedance Note: 1. Output level before the indicated steady state input conditions were established.
HD74ALVCH16373
Pin Arrangement
1OE 1 1Q1 2 1Q2 3 GND 4 1Q3 5 1Q4 6 V CC 7 1Q5 8 1Q6 9 GND 10 1Q7 11 1Q8 12 2Q1 13 2Q2 14 GND 15 2Q3 16 2Q4 17 V CC 18 2Q5 19 2Q6 20 GND 21 2Q7 22 2Q8 23 2OE 24
48 1LE 47 1D1 46 1D2 45 GND 44 1D3 43 1D4 42 VCC 41 1D5 40 1D6 39 GND 38 1D7 37 1D8 36 2D1 35 2D2 34 GND 33 2D3 32 2D4 31 VCC 30 2D5 29 2D6 28 GND 27 2D7 26 2D8 25 2LE
(Top view)
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HD74ALVCH16373
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 0.85 -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
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 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.
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HD74ALVCH16373
Logic Diagram
1OE 1LE
1 48 C1 2
1D1
47
1D
1Q1
To seven other channels
2OE 2LE
24 25 C1 13
2D1
36
1D
2Q1
To seven other channels
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HD74ALVCH16373
Electrical Characteristics (Ta = -40 to 85C)
Item Input voltage Symbol VCC (V) *1 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 Min 1.7 2.0 -- -- 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 VOUT = VCC or GND VIN = VCC or GND VIN = one input at (VCC-0.6) V, other inputs at V CC or GND Unit V Test Conditions
Min to Max VCC-0.2 2.3 2.3 2.7 3.0 3.0 2.0 1.7 2.2 2.4 2.0
VOL
Min to Max -- 2.3 2.3 2.7 3.0 -- -- -- -- -- 45 -45 75 -75 -- -- -- --
Input current
I IN I IN (hold)
3.6 2.3 2.3 3.0 3.0 3.6
Off state output current
*2
I OZ I CC
3.6 3.6 3.0 to 3.6
Quiescent supply current I CC
Notes: 1. For conditions shown as Min or Max, use the appropriate values under recommended operating conditions. 2. For I / O ports, the parameter I OZ includes the input leakage current.
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HD74ALVCH16373
Switching Characteristics (Ta = -40 to 85C)
Item Propagation delay time Symbol VCC (V) t PLH t PHL 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 1.0 -- 1.1 1.0 -- 1.0 1.0 -- 1.0 1.9 -- 1.4 1.0 1.0 1.1 1.5 1.7 1.4 3.3 3.3 3.3 -- -- -- Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 3.0 6.0 7.0 Max 4.5 4.3 3.6 4.9 4.6 3.9 6.0 5.7 4.7 5.1 4.5 4.1 -- -- -- -- -- -- -- -- -- -- -- -- pF pF Control inputs Data inputs Outputs ns ns ns ns OE Q ns OE Q LE Q Unit ns FROM (Input) D TO (Output) Q
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HD74ALVCH16373
* Test Circuit
See under table 500 S1 OPEN
*1
GND 500
C L = 50 pF
Load Circuit for Outputs Symbol t PLH / t PHL t su / t h / t w t ZH/ t HZ t ZL / t LZ
Vcc=2.50.2V Vcc=2.7V, 3.30.3V
OPEN GND 4.6 V
OPEN GND 6.0 V
Note: 1. C L includes probe and jig capacitance.
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HD74ALVCH16373
* Waveforms - 1
tr 90 % 90 % Vref 10 % tr Input D 90 % 10 % t PLH Output Q Vref 10 % tf 90 % 10 % t PHL Vref VOL tf VIH Vref GND VIH
Input LE
GND VOH
* Waveforms - 2
tr Input LE 90 % 10 % tr Input D 10 % 90 % Vref t PLH Output Q Vref 90 % Vref tf VIH GND VIH 10 % t PHL Vref VOL
GND VOH
* Waveforms - 3
tr Input LE 10 % 90 % 90 % Vref Vref tw tsu tf VIH 10 % th VIH Input D Vref Vref GND GND
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HD74ALVCH16373
* Waveforms - 3
90 % Vref 10 % t ZL Vref t ZH Waveform - B Vref t HZ VOH - 0.3 V 10 % t LZ tf tr 90 % Vref GND VOH1 Waveform - A VOL + 0.3 V VOL VOH VOL1 TEST VIH Vref VOH1 VOL1
Vcc=2.50.2V Vcc=2.7V, 3.30.3V
VIH
Output Control
2.3 V 1.2 V 2.3 V GND
2.7 V 1.5 V 3.0 V GND
Notes: 1. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, Zo = 50 , tr 2.5 ns, tf 2.5 ns. 2. Waveform - A is for an output with internal conditions such that the output is low except when disabled by the output control. 3. Waveform - B is for an output with internal conditions such that the output is high except when disabled by the output control. 4. The output are measured one at a time with one transition per measurement.
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HD74ALVCH16373
Package Dimensions
Unit : mm
12.50 -0.1 48
+0.3
25 6.10 +0.3 -0.1
1 0.20 +0.1 -0.05
0.50 0.08 M 0.65 Max
24 0.15 0.05
8.10 0.3 10 Max 0.50 0.1 Hitachi code EIAJ code JEDEC code TTP-48DC -- --
0.10
10
1.20 max
0.05 Min
HD74ALVCH16373
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 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
Hitachi Semiconductor (America) Inc. 179 East Tasman Drive, San Jose,CA 95134 Tel: <1> (408) 433-1990 Fax: <1>(408) 433-0223
Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.
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