SN74ACT7801 Datasheet, PDF (1/19 Pages) Texas Instruments – 1024x18 CLOCKED FIRST-IN, FIRST-OUT MEMORY

SN74ACT7801
1024 × 18 CLOCKED FIRSTĆIN, FIRSTĆOUT MEMORY
ą
SCAS111 − D3489, APRIL 1990 − REVISED MAY 1991
• Member of the Texas Instruments
Widebus  Family
• Independent Asynchronous Inputs and
Outputs
• 1024 Words × 18 Bits
• Read and Write Operations Can Be
Synchronized to Independent System
Clocks
• Programmable Almost-Full/Almost-Empty
Flag
• Input-Ready, Output-Ready, and Half-Full
Flags
• Cascadable in Word Width and/or Word
Depth
• Fast Access Times of 15 ns With a 50-pF
Load
• High-Output Drive for Direct Bus Interface
• 3-State Outputs
• Available in 68-Pin PLCC (FN) or
Space-Saving 80-Pin Shrink Quad Flat
Package (PN)
FN PACKAGE
(TOP VIEW)
D14
D13
D12
D11
D10
D9
V_CC
D8
GND
D7
D6
D5
D4
D3
D2
D1
D0
9 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61
10
60
11
59
12
58
13
57
14
56
15
55
16
54
17
53
18
52
19
51
20
50
21
49
22
48
23
47
24
46
25
45
26
44
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
V_CC
Q14
Q13
GND
Q12
Q11
V_CC
Q10
Q9
GND
Q8
Q7
V_CC
Q6
Q5
GND
Q4
Widebus is a trademark of Texas Instruments Incorporated.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  1991, Texas Instruments Incorporated
1