TL16C554A_13 Datasheet, PDF (9/46 Pages) Texas Instruments – ASYNCHRONOUS-COMMUNICATIONS ELEMENT

TL16C554A, TL16C554AI
ASYNCHRONOUS-COMMUNICATIONS ELEMENT
SLLS509E − AUGUST 2001 − REVISED JUNE 2010
recommended operating conditions, low voltage (3.3-V nominal)
Supply voltage, V_CC
Clock high-level input voltage at XTAL1, V_IH(CLK)
Clock low-level input voltage at XTAL1, V_IL(CLK)
High-level input voltage, V_IH
Low-level input voltage, V_IL
Clock frequency, f_clock
Operating free-air temperature, T_A
TL16C554A
TL16C554AI
MIN
3
2
− 0.5
2
− 0.5
NOM
3.3
0
−40
MAX
3.6
V_CC
0.8
V_CC
0.8
16
70
85
UNIT
V
V
V
V
V
MHz
°C
°C
electrical characteristics over recommended ranges of operating free-air temperature and supply
voltage, low voltage (3.3-V nominal) (unless otherwise noted)
V_OH‡
V_OL‡
I_Ikg
I_OZ
PARAMETER
High-level output voltage
Low-level output voltage
Input leakage current
High-impedance output
current
TEST CONDITIONS
I_OH = − 1 mA
I_OL = 1.6 mA
V_CC = 3.6 V,
V_I = 0 to 3.6 V,
GND = 0,
All other terminals floating
V_CC = 3.6 V,
GND = 0, V_O = 0 to 3.6 V,
Chip selected in write mode or chip deselected
I_CC
Supply current
V_CC = 3.6 V,
T_A = 25°C,
RX, DSR, DCD, CTS, and RI at 2 V,
All other inputs at 0.8 V, XTAL1 at 4 MHz,
No load on outputs, Baud rate = 50 kilobits per second
C_i(XTAL1) Clock input capacitance
C_o(XTAL2)
C_i
Clock output capacitance _{VCC = 0, VSS = 0, all other terminals grounded,}
Input capacitance
f = 1 MHz, T_A = 25°C
C_o
Output capacitance
† _{All typical values are at VCC = 3.3 V, TA = 25°C.}
‡ _{These parameters apply for all outputs except XTAL2.}
MIN TYP^†
2.4
MAX
0.4
UNIT
V
V
± 10 μA
± 20 μA
40 mA
15
20 pF
20
30 pF
6
10 pF
10
20 pF
clock timing requirements over recommended ranges of operating free-air temperature and supply
voltage (see Figure 1)
t_w1
Pulse duration, clock high (external clock)
t_w2
Pulse duration, clock low (external clock)
t_w3
Pulse duration, RESET
MIN
31
31
1000
MAX
UNIT
ns
ns
ns
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