April 1995
ACS374MS
Radiation Hardened
Octal D Flip-Flop, Three-State
Features
• 1.25 Micron Radiation Hardened SOS CMOS
• Total Dose 300K RAD (Si)
• Single Event Upset (SEU) Immunity
<1 x 10
• SEU LET Threshold >80 MEV-cm
• Dose Rate Upset >10
-10
Errors/Bit-Day (Typ)
11
RAD (Si)/s, 20ns Pulse
2
/mg
• Latch-Up Free Under Any Conditions
• Military Temperature Range: -55
o
C to +125oC
• Significant Power Reduction Compared to ALSTTL Logic
• DC Operating Voltage Range: 4.5V to 5.5V
• Input Logic Levels
- VIL = 30% of VCC Max
- VIH = 70% of VCC Min
• Input Current ≤1µA at VOL, VOH
Description
The Intersil ACS374MS is a radiation hardened octal D-type flipflop with three-state outputs. The eight edge-triggered flip-flops
enter data into their registers on the low to high transition of clock
(CP). The Output Enable (OEN) controls the three-state outputs
and is independent of the register operation. When the OEN is
high, the outputs will be in the high impedance state.
The ACS374MS utilizes advanced CMOS/SOS technology to
achieve high-speed operation. This device is a member of the
radiation hardened, high-speed, CMOS/SOS Logic Family.
Pinouts
20 LEAD CERAMIC DUAL-IN-LINE
MIL-STD-1835 DESIGNATOR CDIP2-T20, LEAD FINISH C
TOP VIEW
1
OE
Q0
2
D0
3
D1
4
Q1
5
Q2
6
D2
7
8
D3
9
Q3
GND
10
20 LEAD CERAMIC FLATPACK
MIL-STD-1835 DESIGNATOR CDFP4-F20, LEAD FINISH C
TOP VIEW
OE
Q0
D0
D1
Q1
Q2
D2
D3
Q3
GND
120
2
3
4
5
6
7
8
9
10
VCC
20
Q7
19
D7
18
D6
17
Q6
16
Q5
15
D5
14
D4
13
12
Q4
11
CP
19
18
17
16
15
14
13
12
11
VCC
Q7
D7
D6
Q6
Q5
D5
D4
Q4
CP
Ordering Information
PART NUMBER TEMPERATURE RANGE SCREENING LEVEL PACKAGE
ACS374DMSR -55oC to +125oC Intersil Class S Equivalent 20 Lead SBDIP
ACS374KMSR -55oC to +125oC Intersil Class S Equivalent 20 Lead Ceramic Flatpack
ACS374D/Sample +25oC Sample 20 Lead SBDIP
ACS374K/Sample +25oC Sample 20 Lead Ceramic Flatpack
ACS374HMSR +25oC Die Die
Truth Table
INPUTS OUTPUTS
OE CP Dn Qn
LHH
LLL
LXXQ0
HXXZ
H = High Level
L = Low Level
X = Immaterial
Z = High Impedance
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
= Transition from Low to High Level
Q0 = the level of Q before the indicated input conditions
were established
1
Functional Diagram
1 OF 8
D
COMMON CONTROLS
CP
OE
FF
DQ
CP
Spec Number 518820
File Number 3997
Q
OE
Specifications ACS374MS
Absolute Maximum Ratings Reliability Information
Supply Voltage (VCC). . . . . . . . . . . . . . . . . . . . . . . . .-0.5V to +6.0V
Input Voltage Range. . . . . . . . . . . . . . . . . . . . . .-0.5V to VCC +0.5V
DC Input Current, Any One Input . . . . . . . . . . . . . . . . . . . . . . . .±10mA
DC Drain Current, Any One Output. . . . . . . . . . . . . . . . . . . . . . .±50mA
Storage Temperature Range (TSTG). . . . . . . . . . . -65oC to +150oC
Lead Temperature (Soldering 10s). . . . . . . . . . . . . . . . . . . . +265
Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . . . . . +175
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 1
(All Voltages Reference to VSS)
CAUTION: As with all semiconductors, stress listed under “Absolute Maximum Ratings” may be applied to devices (one at a time) without resulting in permanent
damage. This is a stress rating only. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. The conditions listed
under “Electrical Performance Characteristics” are the only conditions recommended for satisfactory device operation.
Operating Conditions
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +4.5V to +5.5V
Input Rise and Fall Times at 4.5V VCC (TR, TF). . . . . . 10ns/V Max
Operating Temperature Range (T
) . . . . . . . . . . . . -55oC to +125oC
A
TABLE 1. DC ELECTRICAL PERFORMANCE CHARACTERISTICS
Thermal Impedance θ
DIP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72oC/W 24oC/W
Flatpack. . . . . . . . . . . . . . . . . . . . . . . . . . 107
Maximum Package Power Dissipation at +125
DIP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7W
o
C
Flatpack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5W
o
C
Maximum Device Power Dissipation. . . . . . . . . . . . . . . . . . .(TBD)W
JA
o
C/W 28oC/W
o
C
Gate Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 Gates
Input High Voltage (VIH). . . . . . . . . . . . . . . . . . VCC to 70% of VCC
Input Low Voltage (VIL). . . . . . . . . . . . . . . . . . . . .0V to 30% of VCC
θ
JC
(NOTE 1)
PARAMETER SYMBOL
CONDITIONS
Supply Current ICC VCC = 5.5V,
VIN = VCC or GND
Output Current
(Source)
IOH VCC = VIH = 4.5V,
VOUT = VCC -0.4V,
VIL = 0V, (Note 2)
Output Current
(Sink)
IOL VCC = VIH = 4.5V,
VOUT = 0.4V,
VIL = 0V, (Note 2)
Output Voltage High VOH VCC = 5.5V, VIH = 3.85V
VIL = 1.65V, IOH = -50µA
VCC = 4.5V, VIH = 3.15V,
VIL = 1.35V, IOH = -50µA
Output Voltage Low VOL VCC = 5.5V, VIH = 3.85V
VIL = 1.65V, IOH = 50µA
VCC = 4.5V, VIH = 3.15V,
VIL = 1.35V, IOH = 50µA
Input Leakage
Current
IIN VCC = 5.5V,
VIN = VCC or GND
GROUP
LIMITS
A SUB-
GROUPS TEMPERATURE
1 +25
o
C-20µA
UNITSMIN MAX
2, 3 +125oC, -55oC - 400 µA
1 +25oC -12 - mA
2, 3 +125oC, -55oC-8-mA
1 +25oC12-mA
2, 3 +125oC, -55oC8-mA
1, 2, 3 +25oC, +125oC, -55oC VCC -0.1 - V
1, 2, 3 +25oC, +125oC, -55oC VCC -0.1 - V
1, 2, 3 +25oC, +125oC, -55oC - 0.1 V
1, 2, 3 +25oC, +125oC, -55oC - 0.1 V
1 +25oC-±0.5 µA
2, 3 +125oC, -55oC-±1.0 µA
Three-State Output
Leakage Current
IOZ VCC = 5.5V,
Force Voltage = 0V or VCC
1 +25oC-±1 µA
2, 3 +125oC, -55oC-±35 µA
Noise Immunity
Functional Test
FN VCC = 4.5V, VIH = 3.15V,
VIL = 1.35V, (Note 3)
7, 8A, 8B +25oC, +125oC, -55oC- - V
NOTES:
1. All voltages referenced to device GND.
2. Force/measure functions may be interchanged.
3. For functional tests, VO ≥4.0V is recognized as a logic “1”, and VO ≤0.5V is recognized as a logic “0”.
2
Spec Number 518820
Specifications ACS374MS
TABLE 2. AC ELECTRICAL PERFORMANCE CHARACTERISTICS
GROUP
(NOTES 1, 2)
PARAMETER SYMBOL
Propagation Delay TPHL1 VCC = 4.5V, VIH = 4.5V,
TPLH1 VCC = 4.5V, VIH = 4.5V,
TPZL1 VCC = 4.5V, VIH = 4.5V,
TPZH1 VCC = 4.5V, VIH = 4.5V,
TPLZ1 VCC = 4.5V, VIH = 4.5V,
TPHZ1 VCC = 4.5V, VIH = 4.5V,
NOTES:
1. All voltages referenced to device GND.
2. AC measurements assume RL = 500Ω, CL = 50pF, Input TR = TF = 3ns.
CONDITIONS
VIL = 0V
VIL = 0V
VIL = 0V
VIL = 0V
VIL = 0V
VIL = 0V
A SUB-
GROUPS TEMPERATURE
10, 11 +125oC, -55oC 2 17 ns
10, 11 +125oC, -55oC 2 20 ns
10, 11 +125oC, -55oC 2 19 ns
10, 11 +125oC, -55oC 2 20 ns
10, 11 +125oC, -55oC 2 19 ns
10, 11 +125oC, -55oC 2 19 ns
LIMITS
UNITSMIN MAX
9 +25oC 2 14 ns
9 +25oC 2 16 ns
9 +25oC 2 15 ns
9 +25oC 2 16 ns
9 +25oC 2 15 ns
9 +25oC 2 15 ns
TABLE 3. ELECTRICAL PERFORMANCE CHARACTERISTICS
PARAMETER SYMBOL CONDITIONS NOTE TEMP
Capacitance Power
Dissipation
Input Capacitance CIN VCC = 5.0V, VIH = 5.0V,
Output Capacitance COUT VCC = 5.0V, VIH = 5.0V,
Pulse Width Time TW VCC = 4.5V, VIH = 4.5V,
Setup Time TSU VCC = 4.5V, VIH = 4.5V,
Hold Time TH VCC = 4.5V, VIH = 4.5V,
Maximum FrequencyCPFMAX VCC = 4.5V, VIH = 4.5V,
CPD VCC = 5.0V, VIH = 5.0V,
VIL = 0V, f = 1MHz
VIL = 0V, f = 1MHz
VIL = 0V, f = 1MHz
VIL = 0V
VIL = 0V
VIL = 0V
VIL = 0V
1 +25oC - 25 - pF
1 +25oC--10pF
1 +25oC--20pF
1 +25oC 4.5 - - ns
1 +25oC 3.5 - - ns
1 +25oC 3.5 - - ns
1 +25oC 0 - 100 MHz
LIMITS
UNITSMIN TYP MAX
+125oC - 30 - pF
+125oC--10pF
+125oC--20pF
+125oC5--ns
+125oC4--ns
+125oC4--ns
+125oC 0 - 100 MHz
NOTE:
1. The parameters listed in Table 3 are controlled via design or process parameters. Min and Max Limits are guaranteed but not directly
tested. These parameters are characterized upon initial design release and upon design changes which affect these characteristics.
Spec Number 518820
3