SN74ACT3622 Datasheet, PDF (1/28 Pages) Texas Instruments – 256 × 36 × 2 CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY

SN74ACT3622
256 × 36 × 2
CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY
SCAS247D – AUGUST 1993 – REVISED APRIL 1998
D Free-Running CLKA and CLKB Can Be
Asynchronous or Coincident
D Two Independent Clocked FIFOs Buffering
Data in Opposite Directions
D Mailbox-Bypass Register for Each FIFO
D Programmable Almost-Full and
Almost-Empty Flags
D Microprocessor Interface Control Logic
D IRA, ORA, AEA, and AFA Flags
Synchronized by CLKA
D IRB, ORB, AEB, and AFB Flags
Synchronized by CLKB
D Low-Power 0.8 µm Advanced CMOS
Technology
D Supports Clock Frequencies up to 67 MHz
D Fast Access Times of 11 ns
D Pin-to-Pin Compatible With the
SN74ACT3632 and SN74ACT3642
D Package Options Include 120-Pin Thin
Quad Flat (PCB) and 132-Pin Plastic Quad
Flat (PQ) Packages
PCB PACKAGE
(TOP VIEW)
A35 1
A34 2
A33 3
A32 4
V_CC 5
A31 6
A30 7
GND 8
A29 9
A28 10
A27 11
A26 12
A25 13
A24 14
A23 15
GND 16
A22 17
V_CC 18
A21 19
A20 20
A19 21
A18 22
GND 23
A17 24
A16 25
A15 26
A14 27
A13 28
V_CC 29
A12 30
90 B35
89 B34
88 B33
87 B32
86 GND
85 B31
84 B30
83 B29
82 B28
81 B27
80 B26
79 V_CC
78 B25
77 B24
76 GND
75 B23
74 B22
73 B21
72 B20
71 B19
70 B18
69 GND
68 B17
67 B16
66 V_CC
65 B15
64 B14
63 B13
62 B12
61 GND
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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