IDT54/74FCT138/A/C
FAST CMOS 1-OF-8 DECODER-WITH ENABLE MILITARY AND COMMERCIAL TEMPERATURE RANGES
7.3 3
POWER SUPPLY CHARACTERISTICS
VLC = 0.2V; VHC = VCC – 0.2V
Symbol Parameter Test Conditions
(1)
Min. Typ.
(2)
Max. Unit
I
CC Quiescent Power Supply Current Vcc = Max. — 0.2 1.5 mA
V
IN ≥ VHC; VIN ≤ VLC
∆ICC Quiescent Power Supply Current Vcc = Max. — 0.5 2.0 mA
TTL Inputs HIGH V
IN = 3.4V
(3)
ICCD Dynamic Power Supply Current
(4)
Vcc = Max. VIN ≥ VHC — 0.15 0.3 mA/MHz
Outputs Open V
IN ≤ VLC
One Output Toggling
50% Duty Cycle
I
C Total Power Supply Current
(5)
Vcc = Max. VIN ≥ VHC — 1.7 4.5 mA
Outputs Open V
IN ≤ VLC
Toggle 1, 2 or E3 (FCT)
50% Duty Cycle V
IN = 3.4V — 2.0 5.5
f
O = 10MHz VIN = GND
One Output Toggling
NOTES: 2581 tbl 04
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC = 5.0V, +25°C ambient.
3. Per TTL driven input (V
IN = 3.4V); all other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
5. I
C = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fONO)
I
CC = Quiescent Current
∆I
CC = Power Supply Current for a TTL High Input (VIN = 3.4V)
D
H = Duty Cycle for TTL Inputs High
N
T = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Output Transition Pair (HLH or LHL)
f
CP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
O = Output Frequency
N
O = Number of Outputs at fO
All currents are in milliamps and all frequencies are in megahertz.
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: VLC = 0.2V; VHC = VCC – 0.2V
Commercial: TA = 0°C to +70°C, VCC = 5.0V ± 5%; Military: TA = –55°C to +125°C, VCC = 5.0V ± 10%
Symbol Parameter Test Conditions
(1)
Min. Typ.
(2)
Max. Unit
V
IH Input HIGH Level Guaranteed Logic HIGH Level 2.0 — — V
V
IL Input LOW Level Guaranteed Logic LOW Level — — 0.8 V
I
IH Input HIGH Current VCC = Max. VI = VCC ——5µA
V
I= 2.7V — — 5
(4)
IIL Input LOW Current VI= 0.5V — — –5
(4)
VI = GND — — –5
V
IK Clamp Diode Voltage VCC = Min., IN = –18mA — –0.7 –1.2 V
I
OS Short Circuit Current VCC = Max.
(3)
, VO = GND –60 –120 — mA
V
OH Output HIGH Voltage VCC = 3V, VIN = VLC or VHC, IOH = –32µAVHC VCC —V
V
CC = Min. IOH = –300µAVHC VCC —
V
IN = VIH or VIL IOH = –12mA MIL. 2.4 4.3 —
I
OH = –15mA COM’L. 2.4 4.3 —
V
OL Output LOW Voltage VCC = 3V, VIN = VLC or VHC, IOL = 300µA — GND VLC V
V
CC = Min. IOL = 300µA — GND VLC
(4)
VIN = VIH or VIL IOL = 32mA MIL. — 0.3 0.5
I
OL = 48mA COM’L. — 0.3 0.5
NOTES: 2581 tbl 03
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC = 5.0V, +25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second.
4. This parameter is guaranteed but not tested.
