74F552 Datasheet, PDF (2/14 Pages) NXP Semiconductors – Octal registered transceiver with parity and flags 3-State

Philips Semiconductors
Octal registered transceiver with parity and flags (3-State)
Product specification
74F552
FEATURES
• 8-bit bidirectional I/O port with handshake
• Register status flag flip-flops
• Separate clock enable and output enable
• Parity generation and parity check
• B outputs and parity output sink 64mA
DESCRIPTION
The 74F522 Octal Registered Transceiver contains two 8-bit
registers for temporary storage of data flowing in either direction.
Each register has its own clock (CPR, CPS) and Clock Enable
(CER, CES) inputs, as well as a flag flip-flop that is set automatically
as the register is loaded. The flag output will be reset when the
Output Enable returns to High after reading the output port. Each
register has a separate Output Enable (OEAS, OEBR) for its 3-State
buffer. The separate Clocks, Flags and Enables provide
considerable flexibility as I/O ports for demand-response data
transfer. When data is transferred from the A port to the B port, a
parity bit is generated. On the other hand, when data is transferred
from the B port to the A port, the parity of input data on B0–B7 is
checked.
TYPE
74F552
TYPICAL f_MAX
85MHz
TYPICAL SUPPLY
CURRENT
(TOTAL)
120mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
V_CC = 5V ±10%,
T_amb = 0°C to +70°C
PKG DWG #
28-Pin Plastic DIP
(600mil)
N74F552N
SOT117-2
28-Pin Plastic SOL
N74F552D
SOT136-1
LOGIC SYMBOL
18 17 16 15 14 13 12 11
6
7
21
20
19
5
V_CC = Pin 8
GND = Pin 22
A0 A1 A2 A3 A4 A5 A6 A7
CPR
CER
CES
CPS
OEAS
PARITY
23
FS
10
FR
24
ERROR
9
OEBR
B0 B1 B2 B3 B4 B5 B6 B7
25 26 27 28 1 2 3 4
SF01041
PIN CONFIGURATION
B4 ¹
B5 ²
B6 ³
B7 4
OEBR ⁵
CPR ⁶
CER ⁷
V_CC 8
ERROR ⁹
FS ¹⁰
A7 ¹¹
A6 12
A5 13
A4 14
28 B3
27 _B2
26 _B1
25 _B0
24 _FR
23 _PARITY
22 _GND
21 _CES
20 _CPS
19 _OEAS
18 _A0
17 _A1
16 _A2
15 _A3
SF01039
LOGIC SYMBOL (IEEE/IEC)
XCVR
6
1C2
5,6
23
7
EN1’
5,6
5
EN6
20
6C4
6
9
21
EN3
Z7 ^6,7
10
19
EN6
5
14
18
3,4,6
1,2,6
25
17
26
16
27
15
28
14
1
13
2
12
3
11
4
SF01040
1991 Jan 02
2
853–1098 01347