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19-3519; Rev 0; 3/91
8-Channel Latchable Multiplexers
_______________General Description
Maxim's DG528/DG529 are monolithic, 8-channel, CMOS multiplexers with on-board address and control latches that simplify design and reduce board space in microprocessor-based applications. The DG528 is a single-ended, 1-of-8 multiplexer, while the DG529 is a differential, 2-of-8 multiplexer. These devices can operate as multiplexers or demultiplexers. The DG528/DG529 have break-before-make switching to prevent momentary shorting of the input signals. Each device operates with dual supplies (4.5V to 20V) or a single supply (+5V to +30V). All logic inputs are TTL and CMOS compatible. The Maxim DG528/DG529 are pin and electrically compatible with the industry-standard DG528/DG529.
____________________________Features
o Low-Power, Monolithic CMOS Design o On-Board Address Latches o Break-Before-Make Input Switches o TTL and CMOS Logic Compatible o Microprocessor-Bus Compatible o rDS(ON) < 400 o Pin and Electrically Compatible with the IndustryStandard DG528/DG529 and ADG528/ADG529
DG528/DG529
______________Ordering Information
PART DG528CJ TEMP. RANGE 0C to +70C PIN-PACKAGE 18 Plastic DIP
________________________Applications
Data-Acquisition Systems Automatic Test Equipment Avionics and Military Systems Communication Systems Microprocessor-Controlled Systems Audio-Signal Multiplexing
DG528CWN 0C to +70C 18 Wide SO DG528CK 0C to +70C 18 CERDIP DG528C/D 0C to +70C Dice* DG528DJ -40C to +85C 18 Plastic DIP DG528DN -40C to +85C 20 PLCC DG528EWN -40C to +85C 18 Wide SO DG528DK -40C to +85C 18 CERDIP DG528AZ -55C to +125C 20 LCC** DG528AK -55C to +125C 18 CERDIP** Ordering Information continued at end of data sheet. * Contact factory for dice specifications. ** Contact factory for availability and processing to MIL-STD-883.
__________Typical Operating Circuit
+5V -5V
_________________Pin Configurations
TOP VIEW
WR 1 A0 2 EN 3 18 RS 17 A1 16 A2 15 GND
IN1A IN1B IN2A IN2B IN3A IN3B IN4A IN4B WR RS A0 A1 MUX AND A/D CONTROL DIFFERENTIAL INPUT FOR DATA-ACQUISITION SYSTEMS OUTA
V- 4
DG529
OUTB
MAX133
P INTERFACE
S1 5 S2 6 S3 7 S4 8
DG528
14 V+ 13 S5 12 S6 11 S7 10 S8
D9
DIP/SO
Pin Configurations continued at end of data sheet.
1
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
8-Channel Latchable Multiplexers DG528/DG529
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+ ....................................................................................+44V GND .................................................................................+25V Digital Inputs VS, VD .................................................V- -2V to V+ +2V or 20mA, whichever occurs first. Current (any terminal, except S or D) .................................30mA Continuous Current, S or D Peak Current, S or D ...........................................................20mA (pulsed at 1ms, 10% duty cycle max) ............................50mA Continuous Power Dissipation (TA = +70C) (Note 1) 18-Pin Plastic DIP (derate 11.11mW/C above +70C)...889mW Note 1: All leads are soldered or welded to PC board.
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 in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
18-Pin Wide SO (derate 9.52mW/C above +70C) ....762mW 18-Pin CERDIP (derate 10.53mW/C above +70C)....842mW 20-Pin PLCC (derate 10.00mW/C above +70C) .......800mW 20-Pin LCC (derate 9.09mW/C above +70C) ...........727mW Operating Temperature Ranges DG52_C_ ............................................................0C to +70C DG52_D_/E_ ....................................................-40C to +85C DG52_A_ .......................................................-55C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10sec) .............................+300C
ELECTRICAL CHARACTERISTICS
(V+ = 15V, V- = -15V, VEN = 2.4V, WR = 0V, RS = 2.4V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER SWITCH Analog-Signal Range Drain-Source On-Resistance VANALOG (Note 2) VD = 10V, VAL = 0.8V, IS = -200A, VAH = 2.4 (Note 3) TA = +25C, TMIN TA = TMAX -15 270 15 400 500 -15 270 15 450 500 V SYMBOL CONDITIONS MIN DG52_A DG52_C/D/E UNITS TYP MAX MIN TYP MAX
rDS(ON)
Greatest Change in DrainSource On-Resistance rDS(ON) -10V < VS < 10V Between Channels Source-Off Leakage Current IS(OFF) VEN = 0V, VS = 10V, VD = 10V VEN = 0V, VS = 10V, VD = 10V DG528 DG529
TA = +25C TA = +25C TA = TMAX TA = +25C TA = TMAX TA = +25C TA = TMAX -1 -50 -10 -10
6 -0.005 -0.005 -0.015 -0.008 1 50 10 200 10 100 10 200 10 100 1 1 30 -1 -30 -0.002 -0.01 1 -1 -30 -5 -50 -20 -20 -20 -200 -20
6 -0.005 -0.005 -0.015 -0.008 -0.03 -0.03 -0.015 5 50 20 200 20 100 20 200 20 100 1 1 30 -0.002 -0.01 1
%
nA
Drain-Off Leakage Current
ID(OFF)
-200 -0.015 -100 -0.008
-200 -0.015 -100 -0.008
nA
Drain-On Leakage Current (Notes 3, 4) INPUT Address Input Current, Input Voltage High
ID(ON)
TA = +25C -10 -0.03 VAH = 2.4V, DG528 TA = TMAX -200 -0.03 VS = VD = 10V, VAL = 0.8V, TA = +25C -10 -0.015 DG529 VEN = 2.4V TA = TMAX -100 -0.015 TA = +25C TA = TMAX TA = +25C TA = TMAX TA = +25C TA = TMAX -1 -30 -1 -0.006 -0.002
nA
-100 -0.015 -1 -30 -1 -0.006 -0.002
VA = 2.4V IAH VA = 15V
A
Address Input Current, Input Voltage Low 2
IAL
VA = RS = WR = 0V, VEN = 0V or 2.4V
A
_______________________________________________________________________________________
8-Channel Latchable Multiplexers
ELECTRICAL CHARACTERISTICS
(V+ = 15V, V- = -15V, VEN = 2.4V, WR = 0V, RS = 2.4V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER DYNAMIC Switching Time of Multiplexer Break-Before-Make Interval Enable, Write Turn-On Time Enable, Reset Turn-Off Time Charge Injection Off Isolation Logic-Input Capacitance Source-Off Capacitance Drain-Off Capacitance SUPPLY Positive Supply Current Negative Supply Current MINIMUM INPUT TIMING WR Pulse Width AX, EN Data Valid to WR AX, EN Data Valid after WR RS Pulse Width Note 2: Note 3: Note 4: Note 5: tWW tDW tWD tRS Figure 7 (Stabilization Time) Figure 7 (Hold Time) Figure 7 Figure 7; VS = 5V (Note 5) 300 180 30 500 150 120 10 150 300 180 30 500 15 12 10 150 ns ns ns ns I+ IVEN = VAH = 0V VEN = VAH = 0V TA = +25C TA = +25C -1.5 0.003 0.01 2.5 -1.5 0.003 0.01 2.5 mA mA tTRANS tOPEN Figure 1 Figure 2 TA = +25C TA = +25C TA = +25C TA = +25C TA = +25C 0.4 0.2 1.0 0.4 4 68 1.5 1 4 68 1 0.2 1.5 1.5 1.5 s s s s pC dB SYMBOL CONDITIONS DG52_A DG52_C/D/E UNITS TYP MAX MIN TYP MAX
DG528/DG529
MIN
tON(EN, WR) Figures 3, 4 tOFF(EN, RS) Figures 3, 5 Q OIRR Figure 6
VEN = 0V, RL = 1k, CL = 15pF, TA = +25C VS = 7VRMS, f = 500kHz f = 1MHz VEN = 0V, f = 140kHz, VS = 0V VEN = 0V, f = 140kHz, VS = 0V TA = +25C TA = +25C
CIN CS(OFF)
2.5 5 25 12
2.5 5 25
pF pF
DG528 TA = +25C DG529 TA = +25C
CD(OFF)
pF 12
Guaranteed by design. Sequence each switch on. ID(ON) is leakage from driver into on switch. Reset pulse period must be at least 50s during or after power-on.
_______________________________________________________________________________________
3
8-Channel Latchable Multiplexers DG528/DG529
+2.4V EN RS A0 A1 A2 GND 50
+15V V+
DG528
IN1 IN2 TO IN7 IN8 10V SWITCH OUTPUT VO 35pF
10V
LOGIC INPUT tr < 20ns tf < 20ns
+3V 50% 0
LOGIC INPUT
WR
OUT V1M -15V
SWITCH OUTPUT VO
VIN1 0 0.8VIN8 VIN8
0.8VIN1
+2.4V EN RS IN8 ON tTRANSITION A0 LOGIC INPUT 50 A1 GND
+15V IN1B IN1A TO IN4A OUTA, IN2B TO IN3B IN4B WR OUTB V1M -15V V+
DG529
10V SWITCH OUTPUT VOB 35pF
tTRANSITION IN1 ON
10V
Figure 1. Transition-Time Test Circuits
LOGIC INPUT tr < 20ns tf < 20ns
+3V 50% 0 0V VIN
+3V +1.5V +1.5V
+2.4V EN RS
+15V V+ IN_ AND OUTA OUTB V1k -15V 35pF
DG529
+5V SWITCH OUTPUT VO
SWITCH OUTPUT VO
80% LOGIC INPUT 0V tOPEN 50
A0, A1 (A2) GND WR
Figure 2. Open-Time (B.B.M.) Interval Test Circuit
4
_______________________________________________________________________________________
8-Channel Latchable Multiplexers DG528/DG529
+2.4V LOGIC INPUT EN 50 RS
+15V V+
DG528
IN1 -5V SWITCH OUTPUT
IN2 TO IN8 A0 A1 A2 GND WR
LOGIC INPUT tr < 20ns tf < 20ns
+3V 50% 0 tON(EN) tOFF(EN) 0 0.1 VO 0.9 VO VO VIN1
OUT V1k -15V
VO 35pF
SWITCH OUTPUT VO
0.1 VO
+2.4V RS LOGIC INPUT EN 50
+15V V+ IN1B
DG529
-5V SWITCH OUTPUT VOB 1k 35pF
IN1A TO IN4A OUTA A0 IN2B, IN3B, IN4B A1 OUTB OUT GND WR V-
-15V
Figure 3. Enable tON/tOFF Time Test Circuit
+2.4V +3V WR +1.5V 0 tON(WR) SWITCH OUTPUT VO 0 DEVICE MUST BE RESET PRIOR TO APPLYING WR PULSE 0.2 VO RS WR LOGIC INPUT 50% EN A0, A1 (A2) RS WR GND
+15V
DG529
V+ IN1 OR IN1B +5V SWITCH OUTPUT VO
REMAINING SWITCHES OUTB OUT V1k -15V
35pF
Figure 4. Write Turn-On Time tON(WR) Test Circuit
_______________________________________________________________________________________
5
8-Channel Latchable Multiplexers DG528/DG529
+2.4V +3V RS +1.5V 0 tOFF(RS) SWITCH OUTPUT VO 0 0.8 VO LOGIC INPUT RS 50% EN A0, A1 (A2)
+15V V+ IN1 OR IN1B
DG528*
+5V SWITCH OUTPUT VO
REMAINING SWITCHES OUTB OUT GND WR V1k -15V * AS SHOWN
35pF
Figure 5. Reset Turn-Off Time tOFF(RS) Test Circuit
+15V
DG528*
V+ A0, A1 (A2) EN RGEN S_ VGEN EN GND WR VVO IS THE MEASURE OF VOLTAGE ERROR DUE TO CHARGE INJECTION. THE CHARGE INJECTION IN COULOMBS IS Q = CL X VO. * AS SHOWN RS D +2.4V VO
VO
VO
CL = 1000pF
-15V
Figure 6. Charge-Injection Test Circuit
+3V WR 0 +1.5V tWW tDW +3V EN, A0, A1, (A2) 0 +2.0V +0.8V tWD RS
+3V +1.5V 0 tRS tOFF(RS) VO 0 SWITCH OUTPUT 0.8 VO
Figure 7. Typical Timing Diagrams for DG528/DG529
6 _______________________________________________________________________________________
8-Channel Latchable Multiplexers DG528/DG529
Table 1. DG528 Logic States
A2 A1 A0 EN WR RS ON SWITCH
Table 2. DG529 Logic States
A1 A0 EN WR RS ON SWITCH
Latching X Reset X X X X X 0 None (latches cleared) X X X 1 Maintains previous switch condition
Latching X Reset X X X X 0 None (latches cleared) X X 1 Maintains previous switch condition
Transparent Operation X 0 0 0 0 1 1 1 1 X 0 0 1 1 0 0 1 1 X 0 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 None 1 2 3 4 5 6 7 8
Transparent Operation X 0 0 1 1 X 0 1 0 1 0 1 1 1 1 0 0 0 0 0 1 1 1 1 1 None 1 2 3 4
Note: Logic "1": VAH 2.4V, Logic "0": VAL 0.8V.
_______________Detailed Description
The internal structures of the DG528/DG529 include translators for the A2/A1/A0/EN/WR/RS digital inputs, latches, and a decode section for channel selection (Truth Tables). The gate structures consist of parallel combinations of N and P MOSFETs. WRITE (WR) and RESET (RS) strobes are provided for interfacing with P-bus lines (Figure 9), alleviating the need for the P to provide constant address inputs to the mux to hold a particular channel. When the WR strobe is in the low state (less than 0.8V) and the RS strobe is in the high state (greater than 2.4V), the muxes are in the transparent mode--they act similarly to nonlatching devices, such as the DG508A/ DG509A or the HI508/HI509. When the WR goes high, the previous BCD address input is latched and held in that state indefinitely. To pull the mux out of this state, either WR must be taken
low to the transition state, or RS must be taken low to turn off all channels. RS turns off all channels when it is low, which resets channel selection to the channel 1 mode. The DG528/DG529 work with both single and dual supplies and function over the +5V to +30V single-supply range. For example, with a single +15V power supply, analog signals in the 0V to +15V range can be switched normally. If negative signals around 0V are expected, a negative supply is needed. However, only -5V is needed to normally switch signals in the -5V to +15V range (-5V, +15V supplies). No current is drawn from the negative supply, so Maxim's MAX635 DC-DC converter is an ideal choice. The EN latch allows all switches to be turned off under program control. This is useful when two or more DG528s are cascaded to build 16-line and larger analog-signal multiplexers.
_______________________________________________________________________________________
7
8-Channel Latchable Multiplexers DG528/DG529
V+
EN
PROTECTION D 4-WIDE LATCH LEVEL SHIFT DECODE S1 PROTECTION CLK RESET Sn PROTECTION PROTECTION
A_
WR
RS
V-
Figure 8. Simplified Internal Structure
_______________________Applications
Operation with Supply Voltages Other Than 15V
Maxim guarantees the DG528/DG529 for operation from 4.5V to 20V supplies. The switching delays increase by about a factor of two at 5V, and breakbefore-make action is preserved. The DG528/DG529 can operate with a single +5V to +30V supply as well as asymmetrical power supplies like +15V and -5V. The digital threshold will remain approximately 1.6V above the GND pin, and the analog characteristics such as rDS(ON) are determined by the total voltage difference between V+ and V-. Connect Vto 0V when operating with a +5V to +30V single supply.
Digital Interface Levels
The typical digital threshold of both the address lines and EN is 1.6V with a temperature coefficient of approximately -3mV/C, ensuring compatibility with TTL logic over the temperature range. The digital threshold is relatively independent of the power-supply voltages, going from a typical 1.6V when V+ is 15V to 1.5V typical with V+ = 5V. Therefore, Maxim's DG528/DG529 operate with standard TTL logic levels, even with 5V power supplies. In all cases, EN's threshold is the same as the other logic inputs and is referenced to GND. The digital inputs can also be driven with CMOS logic levels swinging from either V+ to V- or from V+ to GND. The digital input current is just a few nanoamps of leakage at all input-voltage levels with a guaranteed maximum of 1A. The digital inputs are protected from ESD by a 30V zener diode between the input and V+ and can be driven 2V beyond the supplies without drawing excessive current.
8
_______________________________________________________________________________________
8-Channel Latchable Multiplexers DG528/DG529
+15V V+ A0 DATA BUS A1 A2 EN IN3 IN4 RESET MICROPROCESSOR SYSTEM BUS +5V WR RS IN5 IN6 IN2
IN1
15V ANALOG INPUTS
7432
WR IN7
ADDRESS BUS
CS ADDRESS DECODER V-15V
IN8
1-OF-8 ANALOG INPUTS
Figure 9. Bus Interface
_____________________________________________Pin Configurations (continued)
TOP VIEW
1 N.C. 1 N.C. 2 WR 20 RS 2 WR 20 RS 19 A1 19 A1 3 A0 3 A0 WR 1 EN 4 VSS 5 S1 6 S2 7 S3 8 18 A2 17 GND A0 2 EN 3 V- 4 S1A 5 S2A 6 S3A 7 S4A D 10 N.C. 11 S8 12 S7 13 9 8 18 RS 17 A1 16 GND 15 V+ EN 4 VSS 5 S1A 6 S2A 7 S3A 8 18 GND 17 VDD
DG528
16 VDD 15 S5 14 S6
DG529
DG529
16 S1B 15 S2B 14 S3B
14 S1B 13 S2B 12 S3B 11 S4B
N.C. 11
DB 12
LCC/PLCC
DIP/SO
LCC/PLCC
N.C. = NO CONNECT
_______________________________________________________________________________________
S4B 13
10 DB
S4A
DA 10
DA 9
S4
9
9
8-Channel Latchable Multiplexers DG528/DG529
_Ordering Information (continued)
PART DG529CJ DG529CWN DG529CK DG529C/D DG529DJ DG529DN DG529EWN DG529DK DG529AZ DG529AK TEMP. RANGE 0C to +70C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -55C to +125C -55C to +125C PIN-PACKAGE 18 Plastic DIP 18 Wide SO 18 CERDIP Dice* 18 Plastic DIP 20 PLCC 18 Wide SO 18 CERDIP 20 LCC** 18 CERDIP**
A0 EN WR
_________________Chip Topographies
DG528
RS A1 A2 VGND 0.125" (3.18mm)
V+ S1 S2 S3 S4 S7 S8 S5 S6
* Contact factory for dice specifications. ** Contact factory for availability and processing to MIL-STD-883.
D
0.131" (3.33mm)
TRANSISTOR COUNT: 200 SUBSTRATE CONNECTED TO V+ DG529
A0 EN WR RS A1 GND V0.125" V+ (3.18mm) S1A S2A S3A S4A S1B S2B S3B
S4B DB
DA
0.131" (3.33mm)
TRANSISTOR COUNT: 200 SUBSTRATE CONNECTED TO V+
10 ______________________________________________________________________________________
8-Channel Latchable Multiplexers
________________________________________________________Package Information
E D A3 A A2 E1
DIM A A1 A2 A3 B B1 C D1 E E1 e eA eB L INCHES MAX MIN 0.200 - - 0.015 0.175 0.125 0.080 0.055 0.022 0.016 0.065 0.045 0.012 0.008 0.080 0.005 0.325 0.300 0.310 0.240 - 0.100 - 0.300 0.400 - 0.150 0.115 INCHES MIN MAX 0.348 0.390 0.735 0.765 0.745 0.765 0.885 0.915 1.015 1.045 1.14 1.265 MILLIMETERS MIN MAX - 5.08 0.38 - 3.18 4.45 1.40 2.03 0.41 0.56 1.14 1.65 0.20 0.30 0.13 2.03 7.62 8.26 6.10 7.87 2.54 - 7.62 - - 10.16 2.92 3.81 MILLIMETERS MIN MAX 8.84 9.91 18.67 19.43 18.92 19.43 22.48 23.24 25.78 26.54 28.96 32.13
21-0043A
DG528/DG529
L A1 e B D1
0 - 15 C B1 eA eB
Plastic DIP PLASTIC DUAL-IN-LINE PACKAGE (0.300 in.)
PKG. DIM PINS P P P P P N D D D D D D 8 14 16 18 20 24
DIM
D 0- 8 A e B
0.101mm 0.004in.
A1
C
L
A A1 B C E e H L
INCHES MAX MIN 0.104 0.093 0.012 0.004 0.019 0.014 0.013 0.009 0.299 0.291 0.050 0.419 0.394 0.050 0.016
MILLIMETERS MIN MAX 2.35 2.65 0.10 0.30 0.35 0.49 0.23 0.32 7.40 7.60 1.27 10.00 10.65 0.40 1.27
DIM PINS
E
H
Wide SO SMALL-OUTLINE PACKAGE (0.300 in.)
D D D D D
16 18 20 24 28
INCHES MIN MAX 0.398 0.413 0.447 0.463 0.496 0.512 0.598 0.614 0.697 0.713
MILLIMETERS MIN MAX 10.10 10.50 11.35 11.75 12.60 13.00 15.20 15.60 17.70 18.10
21-0042A
______________________________________________________________________________________
11
8-Channel Latchable Multiplexers DG528/DG529
___________________________________________Package Information (continued)
DIM INCHES MIN MAX - 0.200 0.014 0.023 0.038 0.065 0.008 0.015 0.220 0.310 0.290 0.320 0.100 0.125 0.200 0.150 - 0.015 0.070 - 0.098 0.005 - MILLIMETERS MIN MAX - 5.08 0.36 0.58 0.97 1.65 0.20 0.38 5.59 7.87 7.37 8.13 2.54 3.18 5.08 3.81 - 0.38 1.78 - 2.49 0.13 -
E1 A D E
Q L e B S1 S B1 L1
0-15 C
A B B1 C E E1 e L L1 Q S S1
CERDIP CERAMIC DUAL-IN-LINE PACKAGE (0.300 in.)
DIM PINS D D D D D D 8 14 16 18 20 24
INCHES MILLIMETERS MIN MAX MIN MAX - 0.405 - 10.29 - 0.785 - 19.94 - 0.840 - 21.34 - 0.960 - 24.38 - 1.060 - 26.92 - 1.280 - 32.51
21-0045A
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 (c) 1995 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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