TL16C554, TL16C554I
ASYNCHRONOUS COMMUNICATIONS ELEMENT
SLLS165D – JANUARY 1994 – REVISED JULY 1998
FN PACKAGE
(TOP VIEW)
DSRA
CTSA
DTRA
V
CC
RTSA
INTA
CSA
TXA
IOW
TXB
CSB
INTB
RTSB
GND
DTRB
CTSB
DSRB
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
DCDA
RIA
RXA
GND
D7
D6
D5
D4
D3
D2
D1
D0
INTN
VCC
RXD
RID
DCDD
8 7
6
5 4 3 2
1 68 67 66 65 64 63 62 61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
26
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
DSRD
CTSD
DTRD
GND
RTSD
INTD
CSD
TXD
IOR
TXC
CSC
INTC
RTSC
V
CC
DTRC
CTSC
DSRC
NC – No internal connection
2
DCDB
RIB
RXB
VCC
NC
A2
A1
A0
XTAL1
XTAL2
RESET
RXRDY
TXRDY
GND
RXC
RIC
DCDC
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265