NS16C2552 Datasheet, PDF (37/43 Pages) National Semiconductor (TI) – Dual UART with 16-byte/64-byte FIFOs and up to 5 Mbit/s Data Rate

9.0 Absolute Maximum Ratings (Note
1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Operating Temperature
Storage Temperature
All Input or Output Voltages with
respect to V_ss
Power Dissipation
−40˚C to +85˚C
−65˚C to +150˚C
−0.5V to +6.5V
250mW
ESD Rating HBM, 1.5K and 100 pF
ESD Rating Machine Model
8kV
400V
10.0 DC and AC Specifications
Note: Typical specifications are at TA=25˚C, and represent
most likely parametric norms at the time of product charac-
terization. The typical specifications are not guaranteed.
10.1 DC SPECIFICATIONS
TA = -40˚C to +85˚C, V_CC = +2.97V to 5.5V, V_SS = 0V, unless
otherwise specified.
Symbol
V_ILX
V_IHX
V_IL
V_IH
V_OL
V_OH
I_IL
I_IH
I_DD
Parameter
Clock Input Low Voltage
Clock Input High Voltage
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Input Low Leakage
Input High Leakage
Current Consumption
Conditions
I_OL = 6mA
I_OL = 4mA
I_OH = -6mA
I_OH = -1mA
Static clock input
3.3V, 10%
Min
Max
-0.3
0.6
2.4
5.5
-0.3
0.8
2.0
5.5
0.4
2.0
10
10
1.6
10.2 CAPACITANCE
TA = 25˚C, V_DD = V_SS = 0V
Symbol
C_XIN
C_XOUT
C_IN
C_OUT
C_I/O
Parameter
Clock Input Capacitance
Clock Output Capacitance
Input Capacitance
Output Capacitance
Input/Output Capacitance
Conditions
Min
f_c = 1 MHz
Unmeasured Pins Returned
to V_SS
10.3 AC SPECIFICATIONS
TA = -40˚C to +85˚C, V_CC = +2.97V to 5.5V, V_SS = 0V, unless
otherwise specified.
5.0V, 10%
Min
Max
-0.5
0.6
3.1
5.5
-0.5
0.8
2.2
5.5
0.4
2.4
10
10
3.0
Typ
Max
7
7
5
6
10
Units
V
V
V
V
V
V
V
V
µA
µA
mA
Units
pF
pF
pF
pF
pF
Symbol Parameter
f_c
t_HILO
f_OSC
t_RST
n
B_CLK
Crystal Frequency
External Clock Low/High
External Clock Frequency
Reset Pulse Width
Baud Rate Divisor
Baud Clock
t_AR
t_RA
t_RD
t_DY
t_RDV
Address Setup Time
Address Hold Time
RD Strobe Width
Read Cycle Delay
Data Access Time
Condition
3.3V Limits
5.0V Limits
Min
Max
Min
Max
24
24
6
6
80
80
70
70
1
2¹⁶-1
1
2¹⁶-1
16 x of data rate
1/16 of a bit duration
Host Interface
10
10
1
1
35
24
35
24
35
24
Units
MHz
ns
MHz
ns
ns
ns
ns
ns
ns
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