IDT723644L12PF IDT, Integrated Device Technology Inc, IDT723644L12PF Datasheet - Page 7

• Manufacturer Part Number: IDT723644L12PF
• Description: IC FIFO SYNC 2048X36 128QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: 7200r

Specifications of IDT723644L12PF

• Function: Synchronous
• Memory Size: 72K (2K x 36)
• Data Rate: 83MHz
• Access Time: 12ns
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 723644L12PF

DETERMINING ACTIVE CURRENT CONSUMPTION AND POWER DISSIPATION
CLKA and CLKB set to f
outputs were disconnected to normalize the graph to a zero capacitance load. Once the capacitance load per data-output channel and the number
of IDT723624/723634/723644 inputs driven by TTL HIGH levels are known, the power dissipation can be calculated with the equation below.
CALCULATING POWER DISSIPATION
IDT723624/723634/723644 CMOS SyncBiFIFO™ WITH BUS-MATCHING
256 x 36 x 2, 512 x 36 x 2, 1,024 x 36 x 2
250
100
150
200
300
The I
With I
50
0
P
where:
N
∆I
dc
C
f
CC(f)
CC(f)
o
T
L
0
CC
= V
current for the graph in Figure 1 was taken while simultaneously reading and writing a FIFO on the IDT723624/723634/723644 with
taken from Figure 1, the maximum power dissipation (PT) of these FIFOs may be calculated by:
CC
x [I
=
=
=
=
=
CC(f)
S
10
. All data inputs and data outputs change state during each clock cycle to consume the highest supply current. Data
+ (N x ∆I
T
C
f
data
A
L
number of used outputs = 36-bit (long word), 18-bit (word) or 9-bit (byte) bus size
increase in power supply current for each input at a TTL HIGH level
duty cycle of inputs at a TTL HIGH level of 3.4 V
output capacitance load
switching frequency of an output
Figure 1. Typical Characteristics: Supply Current (I
= 25°C
= 0pF
= 1/2 f
CC
S
x dc)] + Σ(C
20
L
x V
CC
30
V
CC
2
X f
= 5.0V
o
)
f
S
⎯ Clock Frequency ⎯ MHz
40
7
50
CC
) vs. Clock Frequency (f
V
V
CC
CC
= 5.5V
60
= 4.5V
COMMERCIAL TEMPERATURE RANGE
70
S
)
80
3270 drw03
90