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CDP1854A3

High Reliability CMOS Programmable Universal Asynchronous Receiver/Transmitter (UART)

Intersil 

Specifications CDP1854A/3, CDP1854AC/3

Operating Conditions At TA = Full Package-Temperature Range. For maximum reliability, operating conditions should be selected

so that operation is always within the following ranges:

PARAMETER

DC Operating Voltage Range

Input Voltage Range

Baud Rate (Receive or Transmit)

CONDITIONS

VDD

(V)

-

-

5

10

-55oC, +25oC

MIN

MAX

4

10.5

VSS

VDD

-

250

-

520

LIMITS

+125oC

MIN

MAX

4

6.5

VSS

VDD

-

215

-

430

UNITS

V

V

K bits/s

K bits/s

Dynamic Electrical Specifications tR, tF = 15ns, VIH = VDD, VIL = VSS, CL = 100pF, (See Figure 1)

PARAMETER

VDD

(V)

LIMITS

-55oC, +25oC

+125oC

MIN

MAX

MIN

MAX

TRANSMITTER TIMING - MODE 1

Clock Period

tCC

5

240

-

280

-

10

120

-

145

-

Pulse Width

Clock Low Level

tCL

5

105

-

125

-

10

55

-

65

-

Clock High Level

tCH

5

135

-

155

-

10

65

-

80

-

TPB

tTT

5

125

-

165

-

10

70

-

80

-

Propagation Delay Time

Clock to Data Start Bit

tCD

5

-

425

-

485

10

-

205

-

235

TPB to THRE

tTTH

5

10

-

315

-

380

-

155

-

185

Clock to THRE

tCTH

5

10

-

335

-

390

-

160

-

190

UNITS

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

3

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