TL16C554A, TL16C554AI

ASYNCHRONOUS-COMMUNICATIONS ELEMENT

SLLS509A – AUGUST 2001 – REVISED JULY 2003

8

POST OFFICE BOX 655303

recommended operating conditions, low voltage (3.3-V nominal)

MIN

NOM

MAX

UNIT

Supply voltage, VCC

3

3.3

3.6

V

Clock high-level input voltage at XTAL1, VIH(CLK)

2

VCC

V

Clock low-level input voltage at XTAL1, VIL(CLK)

– 0.5

0.8

V

High-level input voltage, VIH

2

VCC

V

Low-level input voltage, VIL

– 0.5

0.8

V

Clock frequency, fclock

16

MHz

Operating free-air temperature TA

TL16C554A

0

70

°C

O erating free-air tem erature, TA

TL16C554AI

–40

85

°C

electrical characteristics over recommended ranges of operating free-air temperature and supply

voltage, low voltage (3.3-V nominal) (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VOH‡

High-level output voltage

IOH = – 1 mA

2.4

V

VOL‡

Low-level output voltage

IOL = 1.6 mA

0.4

V

IIkg

Input leakage current

VCC = 3.6 V,

GND = 0,

VI = 0 to 3.6 V,

All other terminals floating

±10

µA

IOZ

High-impedance output

current

VCC = 3.6 V,

GND = 0,

VO = 0 to 3.6 V,

Chip selected in write mode or chip deselected

±20

µA

ICC

Supply current

VCC = 3.6 V,

TA = 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

40

mA

Ci(XTAL1)

Clock input capacitance

15

20

pF

Co(XTAL2) Clock output capacitance

VCC = 0, VSS = 0, all other terminals grounded,

20

30

pF

Ci

Input capacitance

CC

SS

g

f = 1 MHz, TA = 25°C

6

10

pF

Co

Output capacitance

10

20

pF

† All typical values are at VCC = 3.3 V, TA = 25°C.

‡ These parameters apply for all outputs except XTAL2.

clock timing requirements over recommended ranges of operating free-air temperature and supply

voltage (see Figure 1)

MIN

MAX

UNIT

tw1

Pulse duration, clock high (external clock)

31

ns

tw2

Pulse duration, clock low (external clock)

31

ns

tw3

Pulse duration, RESET

1000

ns