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IH6108 데이터시트 PDF




Intersil Corporation에서 제조한 전자 부품 IH6108은 전자 산업 및 응용 분야에서
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부품번호 IH6108 기능
기능 8-Channel CMOS Analog Multiplexer
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IH6108 데이터시트, 핀배열, 회로
Semiconductor
April 1999
POSSDOIGBB4L0SE8O,SLDUEGBT5SE0T8PITARU,OHTDEI-U0PC5R0TO8(DAU) CT
IH6108
8-Channel
CMOS Analog Multiplexer
Features
• Ultra Low Leakage - ID(OFF) 100pA (Typ)
• rDS(ON) < 400Over Full Signal and Temperature
Range
• Power Supply Quiescent Current Less Than 100µA
±14V Analog Signal Range
• No SCR Latchup
• Break-Before-Make Switching
• Binary Address Control (3 Address Inputs Control 8
Channels)
• TTL and CMOS Compatible Strobe Control
• Pin Compatible with DG508A, HI-508 and ADG508A
• Internal Diode in Series with V+ for Fault Protection
Description
The IH6108 is a CMOS 1-of-8 multiplexer. The part is a plug-
in replacement for the DG508A. Three-line decoding is used
so that the 8 channels can be controlled by 3 Address
inputs; additionally a fourth input is provided for use as a
system enable. When the ENABLE input is high (5V), a
channel is selected by the three Address inputs, and when
low (0V) all channels are off. The 3 Address inputs are TTL
and CMOS logic compatible, with a “1” corresponding to any
voltage greater than 2.4V.
Part Number Information
PART
NUMBER
IH6108MJE
IH6108MJE/883B
IH6108CJE
IH6108CPE
TEMP.
RANGE (oC)
-55 to 125
-55 to 125
0 to 70
0 to 70
PACKAGE
16 Ld CERDIP
16 Ld CERDIP
16 Ld CERDIP
16 Ld PDIP
PKG.
NO.
F16.3
F16.3
F16.3
E16.3
Pinout
IH6108
(CERDIP, PDIP)
TOP VIEW
A0 1
EN 2
V- 3
S1 4
S2 5
S3 6
S4 7
D8
16 A1
15 A2
14 GND
13 V+
12 S5
11 S6
10 S7
9 S8
Functional Diagram
S1
S2
S3
S4
VOUT
S5 D
S6
ADDRESS DECODER ENABLE
1 OF 8
INPUT
S7
S8
A0 A1 A2
EN
3 LINE BINARY ADDRESS INPUT
(1 0 1) AND EN AT 5V
ABOVE EXAMPLE SHOWS
CHANNEL 6 TURNED ON.
TRUTH TABLE
A2 A1 A0
xxx
EN
0
000
1
001
1
010
1
011
1
100
1
101
1
110
1
111
1
NOTE: A0, A1, A2
Logic “1” = VAH 2.4V, VENH 4.5V
Logic “0” = VAL 0.8V.
ON SWITCH
None
1
2
3
4
5
6
7
8
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1997
12-128
File Number 3156.2




IH6108 pdf, 반도체, 판매, 대치품
IH6108
Switching Information (Continued)
+15V
A2
A1
S1
S2
THRU
A0 IH6108 S7
VA +5V EN
S8
V- D
GND
-15V
-2V
200
VOUT
35pF
VA
tr < 100ns
tf < 100ns 0.8V
VOUT VS1 = -2V
S1 ON
tOPEN
3V
0.8V
50%
S8 ON
tOPEN
50%
FIGURE 2. tOPEN (BREAK-BEFORE-MAKE) SWITCHING TEST CIRCUIT AND WAVEFORMS
+15V
VEN
A2
A1
S1
S2
THRU
A0 IH6108 S8
EN OUT
GND
-15V
1k
VS1
VOUT
35pF
VEN
tr < 100ns
tf < 100ns
0.8V
VOUT
0V
tEN(ON)
VS1 = -2V
5V
50%
90%
FIGURE 3. tON AND tOFF SWITCHING TEST CIRCUIT AND WAVEFORMS
IH6108 Application Information
10%
tEN(OFF)
ENABLE Input Strobing Levels
The ENABLE input on the IH6108 requires a minimum of
+4.5V to trigger to the “1” state and a maximum of +0.8V to
trigger to the “0” state. If the ENABLE input is being driven
from TTL logic, a pull-up resistor of 1k to 3kis required
from the gate output to +5V supply. (See Figure 4.)
When the EN input is driven from CMOS logic, no pullup is
necessary, see Figure 5.
The supply voltage of the CD4009 affects the switching
speed of the IH6108; the same is true for TTL supply voltage
levels. The following chart shows the effect, on ttrans for a
supply varying from +4.5V to +5.5V.
CMOS OR TTL
SUPPLY VOLTAGE
+4.5V
+4.75V
+5.00V
+5.25V
+5.50V
TYPIACTAL25ToTCRANS
400ns
300ns
250ns
200ns
175ns
The throughput rate can therefore be maximized by using a
+5V to +5.5V supply for the ENABLE Strobe Logic.
The examples shown in Figures 4 and 5 deal with ENABLE
strobing when expansion to more than eight channels is
required. In these cases the EN terminal acts as a fourth
address input. If eight channels or less are being multi-
plexed, the EN terminal can be directly connected to +5V
logic supply to enable the IH6108 at all times.
Using the IH6108 with Supplies Other Than ±15V
The IH6108 can be used with power supplies ranging from
±6V to ±16V. The switch rDS(ON) will increase as the supply
voltages decrease, however, the multiplexer error term (the
product of leakage times rDS(ON)) will remain approximately
constant since leakage decreases as the supply voltages
are reduced.
Caution must be taken to ensure that the enable (EN)
voltage is at least 0.7V below V+ at all times. If this is not
done, the Address input strobing levels will not function
properly. This may be achieved quite simply by connecting
EN (pin 2) to V+ (pin 13) via a silicon diode as shown in
Figure 6. When using this type of configuration, a further
requirement must be met: the strobe levels of A0 and A1
must be within 2.5V of the EN voltage in order to define a
binary “1” state. For the case shown in Figure 6 the EN volt-
age is 11.3V which means that logic high at A0 and A1 is
+8.8V (logic low continues to be 0.8V). In this configuration
the IH6108 cannot be driven by TTL (+5V) or CMOS (+5V)
logic. It can be driven by TTL open collector logic or CMOS
logic with +12V supplies.
If the logic and the IH6108 have common supplies, the EN
pin should again be connected to the supply through a
silicon diode. In this case, tying EN to the logic supply
directly will not work since it violates the 0.7V differential
voltage required between V+ and EN, (See Figure 7). A 1µF
capacitor can be placed across the diode to minimize
switching glitches.
12-131

4페이지










IH6108 전자부품, 판매, 대치품
IH6108
TTL/CMOS INVERTER
TTL/CMOS NOR GATE
A3
A4
A0
A1
IH6108
1 OUT OF 8
A2 EN MUX
18
ANALOG INPUTS
A0
A1 IH6108
A2
EN
1 OUT OF 8
MUX
9 16
ANALOG INPUTS
A0
A1 IH6108
A2 1 OUT OF 8
EN MUX
17 24
ANALOG INPUTS
A0
A1 IH6108
A2
EN
1 OUT OF 8
MUX
25 32
ANALOG INPUTS
TRUTH TABLE
A4 A3 A2 A1 A0 ON SWITCH
00000
S1
00001
S2
00010
S3
00011
S4
00100
S5
00101
S6
00110
S7
00111
S8
01000
S9
01001
S10
01010
S11
01011
S12
01100
S13
01101
S14
01110
S15
01111
S16
A4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
+5V -15V +15V
VL GND V- V+
IH5053
S1 S1 D1
IN1
IN2
S2 D2
S2
VOUT
IH5053
S3 S3 D3
IN3
IN4
S4
GND LV
S4
V+ V-
D4
+5V +15V -15V
TRUTH TABLE
A3 A2 A1 A0
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
ON SWITCH
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
NOTE: TTL inverter must have pullup resistor to +5V to drive EN input.
FIGURE 9. 1 OF 32 CHANNEL MULTIPLEXER USING FOUR IH6108s, AND TWO IH5053s AS A SUBMULTIPLEXER
12-134

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