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HD74ALVCH162260
12-bit to 24-bit Multiplexed D-type Latches with 3-state Outputs
ADE-205-177B (Z) 3rd. Edition December 1999 Description
The HD74ALVCH162260 is a 12-bit to 24-bit multiplexed D-type latch used in applications where two separate data paths must be multiplexed onto, or demultiplexed from, a single data path. Typical applications include multiplexing and / or demultiplexing of address and data information in microprocessor or bus interface applications. This device is also useful in memory interleaving applications. Three 12-bit I / O ports (A1-A12, 1B1-1B12, and 2B1-2B12) are available for address and / or data transfer. The output enable (OE1B, OE2B, and OEA) inputs control the bus transceiver functions. The OE1B and OE2B control signals also allow bank control in the A-to-B direction. Address and / or data information can be stored using the internal storage latches. The latch enable (LE1B, LE2B, LEA1B, and LEA2B) inputs are used to control data storage. When the latch enable input is high, the latch is transparent. When the latch enable input goes low, the data present at the inputs is latched and remains latched until the latch enable input is returned high. Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level. The B outputs, which are designed to sink up to 12 mA, include 26 resistors to reduce overshoot and undershoot.
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 12 mA (@V CC = 3.0 V) * Bus hold on data inputs eliminates the need for external pullup / pulldown resistors * B-port outputs have equivalent 26 series resistors, so no external resistors are required.
HD74ALVCH162260
Function Table
Inputs 1B H L X X X X X 2B X X X H L X X SEL H H H L L L X LE1B H H L X X X X LE2B X X X H H L X OEA L L L L L L H H L A0 *1 H L A0 *1 Z Output A
B-to-A (OEB = H)
Inputs A H L H L H L X X X X X LEA1B H H H H L L L X X X X LEA2B H H L L H H L X X X X OE1B L L L L L L L H L H L OE2B L L L L L L L H H L L
Outputs 1B H L H L 1B0 *1 1B0 1B0 Z Active Z Active
*1 *1
2B H L 2B0 *1 2B0 *1 H L 2B0 *1 Z Z Active Active
A-to-B (OEA = H)
H : High level L : Low level X : Immaterial Z : High impedance Note: 1. Output level before the indicated steady state input conditions were established.
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HD74ALVCH162260
Pin Arrangement
OEA 1 LE1B 2 2B3 3 GND 4 2B2 5 2B1 6 VCC 7 A1 8 A2 9 A3 10 GND 11 A4 12 A5 13 A6 14 A7 15 A8 16 A9 17 GND 18 A10 19 A11 20 A12 21 VCC 22 1B1 23 1B2 24 GND 25 1B3 26 LE2B 27 SEL 28
56 OE2B 55 LEA2B 54 2B4 53 GND 52 2B5 51 2B6 50 VCC 49 2B7 48 2B8 47 2B9 46 GND 45 2B10 44 2B11 43 2B12 42 1B12 41 1B11 40 1B10 39 GND 38 1B9 37 1B8 36 1B7 35 VCC 34 1B6 33 1B5 32 GND 31 1B4 30 LEA1B 29 OE1B
(Top view)
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HD74ALVCH162260
Absolute Maximum Ratings
Item Supply voltage Input voltage
*1, 2
Symbol VCC VI
Ratings -0.5 to 4.6 -0.5 to 4.6 -0.5 to VCC +0.5
Unit V V
Conditions
Except I/O ports I/O ports
Output voltage
*1, 2
VO I IK I OK IO I CC or IGND PT Tstg
-0.5 to VCC +0.5 -50 50 50 100 1 -65 to 150
V mA mA mA mA W C TSSOP VI < 0 VO < 0 or VO > VCC VO = 0 to VCC
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:
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.
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HD74ALVCH162260
Recommended Operating Conditions
Item Supply voltage Input voltage Output voltage High level output current Symbol VCC VI VO I OH (A port) Min 2.3 0 0 -- -- -- I OH (B port) -- -- -- Low level output current I OL (A port) -- -- -- I OL (B port) -- -- -- Input transition rise or fall rate Operating temperature t / v Ta 0 -40 Max 3.6 VCC VCC -12 -12 -24 -6 -8 -12 12 12 24 6 8 12 10 85 ns / V C mA mA 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 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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HD74ALVCH162260
Logic Diagram
LE1B LE2B LEA1B LEA2B OE2B OE1B OEA SEL A1
2 27 30 55 56 29 1 28
C1
8
G1 1 1 1D C1 1D C1 1D C1 1D
23
1B1
6
2B1
To eleven other channels
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HD74ALVCH162260
Electrical Characteristics (Ta = -40 to 85C)
Item Input voltage Symbol VIH VCC (V) *1 2.3 to 2.7 2.7 to 3.6 VIL 2.3 to 2.7 2.7 to 3.6 Output voltage Min 1.7 2.0 -- -- Max -- -- 0.7 0.8 -- -- -- -- -- -- -- -- -- -- -- -- 0.2 0.4 0.7 0.4 0.55 0.2 0.4 0.55 0.55 0.6 0.8 V 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 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 = 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 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 Unit Test Conditions V
VOH (A port) 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
VOH (B port) Min to Max VCC-0.2 2.3 2.3 3.0 2.7 3.0 1.9 1.7 2.4 2.0 2.0
VOL (A port) Min to Max -- 2.3 2.3 2.7 3.0 -- -- -- --
VOL (B port) Min to Max -- 2.3 2.3 3.0 2.7 3.0 -- -- -- -- --
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HD74ALVCH162260
Electrical Characteristics (Ta = -40 to 85C) (cont)
Item Input current Symbol VCC (V) *1 I IN I IN (hold) 3.6 2.3 3.0 3.0 Off state output current
*2
Min -- 45 75 -75 -- -- --
Max 5 -- -- -- 10 40 750
Unit A
Test Conditions VIN = VCC or GND VIH/L = 1.7 V/0.7 V VIN = 0.8 V VIN = 2.0 V
I OZ I CC
3.6 3.6 3.0 to 3.6
A A A
VOUT = VCC or GND VIN = VCC or GND VIN = one input at (VCC-0.6) V, other inputs at V CC or GND
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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HD74ALVCH162260
Switching Characteristics
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 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 2.50.2 2.7 3.30.3 Output disable time t HZ t LZ 2.50.2 2.7 3.30.3 2.50.2 2.7 3.30.3 Min 135 135 135 1.2 -- 1.2 1.2 -- 1.2 1.0 -- 1.0 1.0 -- 1.0 1.2 -- 1.1 1.0 -- 1.0 1.0 -- 1.0 1.7 -- 1.3 1.7 -- 1.3 Typ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Max -- -- -- 6.1 5.8 4.9 5.7 5.1 4.3 6.2 5.2 4.4 6.7 5.9 5.0 6.9 6.6 5.6 6.7 6.4 5.4 7.2 7.1 6.0 5.7 5.0 4.6 6.2 5.5 5.1 OE B ns OE A OE B ns OE A SEL A LE B LE A B A ns A B Unit MHz FROM (Input) TO (Output)
Maximum clock frequency f max
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HD74ALVCH162260
Switching Characteristics (cont)
Item Setup time Symbol VCC (V) 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 Output capacitance CIN CIN / O 3.3 3.3 Min 1.4 1.1 1.1 1.6 1.9 1.5 3.3 3.3 3.3 -- -- Typ -- -- -- -- -- -- -- -- -- 3.5 9.0 Max -- -- -- -- -- -- -- -- -- -- -- pF pF Control inputs A or B ports ns ns Unit ns FROM (Input) TO (Output)
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HD74ALVCH162260
* 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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HD74ALVCH162260
* 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 % VIH GND VIH
Timing Input 10 % tsu
Vref th
Data Input
Vref
Vref GND tw VIH
Input
Vref
Vref GND
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HD74ALVCH162260
* 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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HD74ALVCH162260
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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HD74ALVCH162260
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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