SEPTEMBER 2004
DSC-6478/00
1
©2004 Integrated Device Technology, Inc.
Features
◆◆
◆◆
◆256K x 16 advanced high-speed CMOS Static RAM
◆◆
◆◆
◆JEDEC Center Power / GND pinout for reduced noise.
◆◆
◆◆
◆Equal access and cycle times
– Commercial and Industrial: 10/12/15ns
◆◆
◆◆
◆One Chip Select plus one Output Enable pin
◆◆
◆◆
◆Bidirectional data inputs and outputs directly
LVTTL-compatible
◆◆
◆◆
◆Low power consumption via chip deselect
◆◆
◆◆
◆Upper and Lower Byte Enable Pins
◆◆
◆◆
◆Single 3.3V power supply
◆◆
◆◆
◆Available in 44-pin, 400 mil plastic SOJ package and a 44-
pin, 400 mil TSOP Type II package and a 48 ball grid array,
9mm x 9mm package.
Description
The IDT71V416 is a 4,194,304-bit high-speed Static RAM organized
as 256K x 16. It is fabricated using IDT’s high-perfomance, high-reliability
CMOS technology. This state-of-the-art technology, combined with inno-
vative circuit design techniques, provides a cost-effective solution for high-
speed memory needs.
The IDT71V416 has an output enable pin which operates as fast as
5ns, with address access times as fast as 10ns. All bidirectional inputs and
outputs of the IDT71V416 are LVTTL-compatible and operation is from a
single 3.3V supply. Fully static asynchronous circuitry is used, requiring
no clocks or refresh for operation.
The IDT71V416 is packaged in a 44-pin, 400 mil Plastic SOJ and a
44-pin, 400 mil TSOP Type II package and a 48 ball grid array, 9mm x
9mm package.
Functional Block Diagram
Output
Enable
Buffer
Address
Buffers
Chip
Select
Buffer
Write
Enable
Buffer
Byte
Enable
Buffers
OE
A0 - A17 Row / Column
Decoders
CS
WE
BHE
BLE
4,194,304-bit
Memory
Array
Sense
Amps
and
Write
Drivers
16
High
Byte
Output
Buffer
High
Byte
Write
Buffer
Low
Byte
Write
Buffer
Low
Byte
Output
Buffer
8
8
8
8
8
8
8
8
I/O 15
I/O 8
I/O 7
I/O 0
6478 drw 01
3.3V CMOS Static RAM
4 Meg (256K x 16-Bit) IDT71V416VS
IDT71V416VL
6.422
IDT71V416VS, IDT71V416VL 3.3V CMOS Static RAM
4 Meg (256K x 16-Bit) Commercial and Industrial Temperature Ranges
*Pin 28 can either be a NC or connected to Vss
Top View
Pin Configurations - SOJ/TSOP
Pin Descriptions
SOJ Capacitance
(TA = +25°C, f = 1.0MHz)
NOTE:
1. This parameter is guaranteed by device characterization, but not production
tested.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
I/O 7
A9
A8
A7
A6
A5
WE
I/O 6
I/O 5
I/O 4
V
SS
V
DD
I/O 3
I/O 2
I/O 1
I/O 0
CS
A4
A3
A2
A1
A0 44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
A16
A15
OE
BHE
BLE
I/O 15
I/O 14
I/O 13
I/O 12
V
SS
V
DD
I/O 11
I/O 10
I/O 9
I/O 8
A14
A13
A12
A11
A10
A17
NC*
SO44-1
SO44-2
6478 drw 02
A
0
- A
17
Address Inputs Input
CS Chip Sele ct Inp ut
WE Write Enab le Inp ut
OE Outp ut Enab le Inp ut
BHE High Byte Enable Inp ut
BLE Low Byte Enable Input
I/O
0
- I/O
15
Data Inp u t/ Outp ut I/O
V
DD
3. 3V Po we r Pwr
V
SS
Ground Gnd
6478 tb l 01
Symbol Parameter
(1)
Conditions Max. Unit
C
IN
Inp ut Cap ac i tanc e V
IN
= 3dV 7 pF
C
I/O
I/ O Ca p ac i tan c e V
OUT
= 3d V 8 pF
6478 tbl 02
123456
ABLE OE A
0
A
1
A
2
NC
BI/O
0
BHE A
3
A
4
CS I/O
8
CI/O
1
I/O
2
A
5
A
6
I/O
10
I/O
9
DV
SS
I/O
3
A
17
A
7
I/O
11
V
DD
EV
DD
I/O
4
NC A
16
I/O
12
V
SS
FI/O
6
I/O
5
A
14
A
15
I/O
13
I/O
14
GI/O
7
NC A
12
A
13
WE I/O
15
HNC A
8
A
9
A
10
A
11
NC
6478 tbl 11
Pin Configurations - 48 BGA
48 BGA Capacitance
(TA = +25°C, f = 1.0MHz)
Symbol Parameter
(1)
Conditions Max. Unit
C
IN
Inp ut Cap ac itanc e V
IN
= 3dV 6 pF
C
I/O
I/O Cap ac itance V
OUT
= 3dV 7 pF
6478 tbl 0 2b
6.42
IDT71V416VS, IDT71V416VL 3.3V CMOS Static RAM
4 Meg (256K x 16-Bit) Commercial and Industrial Temperature Ranges
3
Absolute Maximum Ratings(1) Recommended Operating
Temperature and Supply
Voltage
Recommended DC Operating
Conditions
NOTE:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may
cause permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated
in the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
NOTES:
1 . VIH (max) = VDD + 1.0V a.c. (pulse width less than tCYC/2) for I < 20 mA, once
per cycle.
2. VIL (min) = –1.0V a.c. (pulse width less than tCYC/2) for I < 20 mA, once per cycle.
Truth Table(1)
NOTE:
1 . H = VIH, L = VIL, X = Don't care.
Symbol Rating Value Unit
V
DD
Supply Voltag e Relative to
V
SS
-0.5 to +4.6 V
V
IN,
V
OUT
Te rminal Voltag e Re lativ e to
V
SS
-0. 5 to V
DD
+0.5 V
T
BIAS
Tempe rature Und er Bias -55 to +125
o
C
T
STG
Storag e Te mpe rature -55 to +125
o
C
P
T
Po we r Dis s ip atio n 1 W
I
OUT
DC Outp ut Curre nt 50 mA
6478 tb l 0 4
Grade Temperature V
SS
V
DD
Commercial 0
O
C to + 70
O
C0VSee Below
Industrial –40
O
C to +85
O
C0VSee Below
6478 tb l 05
Symbol Parameter Min. Typ. Max. Unit
V
DD
Supply Vo ltage 3.0 3.3 3.6 V
V
SS
Ground 0 0 0 V
V
IH
In pu t H i gh Vol ta ge 2.0
____
V
DD
+0.3
(1)
V
V
IL
Inp ut Low Vo ltag e -0.3
(2)
____
0.8 V
6478 tb l 0 6
CS OE WE BLE BHE I/O
0-
I/O
7
I/O
8-
I/O
15
Function
H X X X X High-Z High-Z Deselected - Standby
LLHLHDATA
OUT
Hi g h-Z Low B yte Rea d
LLHHL High-Z DATA
OUT
Hig h B yte Re ad
LLHLLDATA
OUT
DATA
OUT
Wo rd Re ad
LXLLL DATA
IN
DATA
IN
Word Write
LXLLH DATA
IN
Hig h-Z Lo w B yte Write
LXLHL High-Z DATA
IN
Hig h By te Write
L H H X X High-Z High-Z Outputs Disabled
L X X H H High-Z High-Z Outputs Disabled
6478 tb l 03
6.424
IDT71V416VS, IDT71V416VL 3.3V CMOS Static RAM
4 Meg (256K x 16-Bit) Commercial and Industrial Temperature Ranges
AC Test Conditions
AC Test Loads
Figure 3. Output Capacitive Derating
Figure 1. AC Test Load
Figure 2. AC Test Load
(for tCLZ, tOLZ, tCHZ, tOHZ, tOW, and tWHZ)
*Including jig and scope capacitance.
Inp u t P ul s e Le v e l s
Inp u t Ri s e / F al l Ti m e s
Inp u t Tim i ng Re fe r e nce L ev e l s
Outp ut Re fe re nc e L e ve l s
AC Test Lo ad
GND to 3. 0V
1.5ns
1.5V
1.5V
Fig ures 1,2 and 3
6478 tbl 09
+1.5V
50Ω
I/O Z
0
=50Ω
6478 drw 03
30pF
6478 drw 04
320Ω
350Ω5pF*
DATA
OUT
3.3V
IDT71V416S/71V416L
1
2
3
4
5
6
7
20 40 60 80 100 120140 160180 200
∆t
AA,
t
ACS
(Typical, ns)
CAPACITANCE (pF)
8
6478 drw 05
•••
•
•
•
•
DC Electrical Characteristics
(VDD = Min. to Max., Commercial and Industrial Temperature Ranges)
DC Electrical Characteristics(1, 2)
(VDD = Min. to Max., VLC = 0.2V, VHC = VDD – 0.2V)
NOTES:
1. All values are maximum guaranteed values, except the typical values.
2. All inputs switch between 0.2V (Low) and VDD -0.2V (High).
3. Typical values are measured at 3.3V, 25oC and with equal read and write cycles. This parameter is guaranteed by device characterization, but not production tested.
4. fMAX = 1/tRC (all address inputs are cycling at fMAX); f = 0 means no address input lines are changing.
5. Standard power 10ns (S10) speed grade only.
Symbol Parameter
71V416S/L10 71V416S/L12 71V416S/L15
UnitCom'l. Ind.
(5)
Com'l. Ind. Com'l. Ind.
I
CC
Dynamic Operating Current
CS < V
LC
, Outputs Open, V
DD
= Max., f = f
MAX
(4)
S Max. 200 200 180 180 170 170 mA
LMax. 180 — 170 170 160 160
Typ.
(3)
90 — 80 — 70 —
I
SB
Dynamic Standby Power Supply Current
CS > V
HC
, Outp uts Open, V
DD
= Max., f = f
MAX
(4)
SMax.707060605050mA
L Max. 50 — 45 45 40 40
I
SB1
Full Stand by Po we r S up p ly Current (static)
CS > V
HC
, Outp uts Open, V
DD
= Max., f = 0
(4)
SMax.202020202020mA
L Max. 10 — 10 10 10 10
6478 tb l 08
Symbol Parameter Test Conditions
IDT71V416
UnitMin. Max.
|I
LI
| Inp ut Le akage Curre nt V
CC
= Max., V
IN
=
V
SS
to V
DD
___
5µA
|I
LO
| Output Leakage Current V
DD
= Max., CS = V
IH
, V
OUT
= V
SS
to V
DD
___
5µA
V
OL
Outp ut Lo w Vo l tag e I
OL
= 8mA, V
DD
= Min.
___
0.4 V
V
OH
Outp ut Hig h Vo ltag e I
OH
= -4mA, V
DD
= M in. 2. 4
___
V
6478 tbl 07
6.42
IDT71V416VS, IDT71V416VL 3.3V CMOS Static RAM
4 Meg (256K x 16-Bit) Commercial and Industrial Temperature Ranges
5
71V416S/L10
(2)
71V416S/L12 71V416S/L15
Symbol Parameter Min.Max.Min.Max.Min.Max.Unit
READ CYCLE
t
RC
Re ad Cy c le Time 10
____
12
____
15
____
ns
t
AA
Address Access Time
____
10
____
12
____
15 ns
t
ACS
Chip Select Access Time
____
10
____
12
____
15 ns
t
CLZ
(1)
Chi p Se lec t Lo w to Outp ut i n Lo w-Z 4
____
4
____
4
____
ns
t
CHZ
(1)
Chi p Se le c t Hi g h to Outp ut in Hig h-Z
____
5
____
6
____
7ns
t
OE
Outp ut E nab le Lo w to Output Val id
____
5
____
6
____
7ns
t
OLZ
(1)
Outp ut E nab le Lo w to Outp ut in Lo w-Z 0
____
0
____
0
____
ns
t
OHZ
(1)
Outp ut Enab le Hig h to Outp ut i n Hig h-Z
____
5
____
6
____
7ns
t
OH
Outp ut Hold fro m Ad dres s Chang e 4
____
4
____
4
____
ns
t
BE
By te Enab l e Lo w to Outp ut Vali d
____
5
____
6
____
7ns
t
BLZ
(1)
By te Enab l e Lo w to Outp ut in Lo w-Z 0
____
0
____
0
____
ns
t
BHZ
(1)
Byte Enable High to Output in Hig h-Z
____
5
____
6
____
7ns
WRI TE CYCLE
t
WC
Write Cycle Time 10
____
12
____
15
____
ns
t
AW
Address Valid to End of Write 8
____
8
____
10
____
ns
t
CW
Chi p Se le c t Lo w to End o f Write 8
____
8
____
10
____
ns
t
BW
Byte Enable Low to End of Write 8
____
8
____
10
____
ns
t
AS
Address Set-up Time 0
____
0
____
0
____
ns
t
WR
Address Hold from End of Write 0
____
0
____
0
____
ns
t
WP
Write Pulse Width 8
____
8
____
10
____
ns
t
DW
Data Valid to End of Write 5
____
6
____
7
____
ns
t
DH
Data Ho l d Tim e 0
____
0
____
0
____
ns
t
OW
(1)
Write Enable High to Outp ut in Low-Z 3
____
3
____
3
____
ns
t
WHZ
(1)
Write Enable Lo w to Output in High-Z
____
6
____
7
____
7ns
6478 tbl 10
Timing Waveform of Read Cycle No. 1(1,2,3)
AC Electrical Characteristics
(VDD = Min. to Max., Commercial and Industrial Temperature Ranges)
NOTE:
1. This parameter is guaranteed with the AC Load (Figure 2) by device characterization, but is not production tested.
2. Low power 10ns (L10) speed 0ºC to +70ºC temperature range only.
DATA
OUT
ADDRESS
t
RC
t
AA
t
OH
DATA
OUT
VALID
PREVIOUS DATA
OUT
VALID
t
OH
6478d06
NOTES:
1. WE is HIGH for Read Cycle.
2. Device is continuously selected, CS is LOW.
3. OE, BHE, and BLE are LOW.
6.426
IDT71V416VS, IDT71V416VL 3.3V CMOS Static RAM
4 Meg (256K x 16-Bit) Commercial and Industrial Temperature Ranges
ADDRESS
OE
CS
DATAOUT
6478 drw 07
(3)
DATA VALID
tAA
tRC
tOE
tOLZ
BHE,BLE
(3)
tACS
(3)
tBLZ
tCLZ
(2)
tBE
(2)
tOH
tOHZ (3)
tCHZ (3)
tBHZ (3)
OUT
Timing Waveform of Read Cycle No. 2(1)
NOTES:
1. A write occurs during the overlap of a LOW CS, LOW BHE or BLE, and a LOW WE.
2. OE is continuously HIGH. If during a WE controlled write cycle OE is LOW, tWP must be greater than or equal to tWHZ + tDW to allow the I/O drivers to turn off and data
to be placed on the bus for the required tDW. If OE is HIGH during a WE controlled write cycle, this requirement does not apply and the minimum write pulse is as
short as the specified tWP.
3. During this period, I/O pins are in the output state, and input signals must not be applied.
4. If the CS LOW or BHE and BLE LOW transition occurs simultaneously with or after the WE LOW transition, the outputs remain in a high-impedance state.
5. Transition is measured ±200mV from steady state.
Timing Waveform of Write Cycle No. 1 (WE Controlled Timing)(1,2,4)
NOTES:
1. WE is HIGH for Read Cycle.
2. Address must be valid prior to or coincident with the later of CS, BHE, or BLE transition LOW; otherwise tAA is the limiting parameter.
3. Transition is measured ±200mV from steady state.
ADDRESS
CS
DATA
IN
6478 drw 08
(5) (5)
(5)
DATA
IN
VALID
t
WC
t
AS
t
WHZ
(2)
t
CW
t
CHZ
t
OW
t
WR
WE
t
AW
DATA
OUT
t
DW
t
DH
PREVIOUS DATA VALID DATA VALID
BHE
,
BLE t
BW
t
WP
(5)
t
BHZ
(3)
6.42
IDT71V416VS, IDT71V416VL 3.3V CMOS Static RAM
4 Meg (256K x 16-Bit) Commercial and Industrial Temperature Ranges
7
Timing Waveform of Write Cycle No. 2 (CS Controlled Timing)(1,3)
NOTES:
1. A write occurs during the overlap of a LOW CS, LOW BHE or BLE, and a LOW WE.
2. During this period, I/O pins are in the output state, and input signals must not be applied.
3. If the CS LOW or BHE and BLE LOW transition occurs simultaneously with or after the WE LOW transition, the outputs remain in a high-impedance state.
Timing Waveform of Write Cycle No. 3
(BHE, BLE Controlled Timing)(1,3)
ADDRESS
CS
DATA
IN
DATA
IN
VALID
t
WC
t
AS (2)
t
CW
t
WR
WE
t
AW
DATA
OUT
t
DW
t
DH
BHE, BLE t
BW
t
WP
6478 d09
ADDRESS
CS
DATA
IN
DATA
IN
VALID
t
WC
t
AS
(2)
t
CW
t
WR
WE
t
AW
DATA
OUT
t
DW
t
DH
BHE, BLE
t
BW
t
WP
6478 d10
6.428
IDT71V416VS, IDT71V416VL 3.3V CMOS Static RAM
4 Meg (256K x 16-Bit) Commercial and Industrial Temperature Ranges
X
Power
XX
Speed
XXX
Package
X
Process/
Temperature
Range
Blank
ICommercial (0°C to +70°C)
Industrial (-40°C to +85°C)
Y
PH
BE
44-pin, 400-mil SOJ (SO44-1)
44-pin TSOP Type II (SO44-2)
48 Ball Grid Array
10*
12
15
71V416
Device
Type
IDT
Speed in nanoseconds
6478 drw 11a
* Commercial only for low power 10ns (L10) speed grade.
X
V die stepping
V
S
LStandard Power
Low Power
X
GRestricted hazardous
substance device
Ordering Information
6.42
IDT71V416VS, IDT71V416VL 3.3V CMOS Static RAM
4 Meg (256K x 16-Bit) Commercial and Industrial Temperature Ranges
9
CORPORATE HEADQUARTERS for SALES: for Tech Support:
2975 Stender Way 800-345-7015 or 408-727-6116 sramhelp@idt.com
Santa Clara, CA 95054 fax: 408-492-8674 800-544-7726
www.idt.com
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
Datasheet Document History
09/30/04 Released datasheet
