TMS44409, TMS44409P

1048576-WORD BY 4-BIT

DYNAMIC RANDOM-ACCESS MEMORY

SMHS563 – JULY1995

6

POST OFFICE BOX 1443

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

’44409-60

’44409P-60

’44409-70

’44409P-70

’44409-80

’44409P-80

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

VOH

High-level output

voltage

IOH = – 5 mA

2.4

2.4

2.4

V

VOL

Low-level output

voltage

IOL = 4.2 mA

0.4

0.4

0.4

V

II

Input current

(leakage)

VCC = 5.5 V,

VI = 0 V to 6.5 V,

All other pins = 0 V to VCC

± 10

± 10

± 10

mA

IO

Output current

(leakage)

VCC = 5.5 V,

VO = 0 V to 6.5 V,

CAS high

± 10

± 10

± 10

µA

ICC1 †

Read- or write-cycle

current (see Note 3)

VCC = 5.5 V,

tRWC = MIN

105

90

80

mA

After 1 memory cycle,

TTL

2

2

2

mA

ICC2

Standby current

After 1 memory cycle,

RAS and CAS high,

CMOS

’44409

1

1

1

mA

VIH = 2.4 V

CMOS

’44409P

500

500

500

µA

ICC3

Average refresh

current

(RAS only or CBR)

(see Note 3)

VCC = 5.5 V,

tRWC = MIN,

RAS cycling,

CAS high (RAS only);

RAS low after CAS low (CBR)

105

90

80

mA

ICC4 †

Average EDO page

current (see Note 4)

VCC = 5.5 V,

tHPC = MIN,

RAS low,

CAS cycling

90

80

70

mA

ICC6‡

Self-refresh current

CAS, RAS

<0.2 V,

Measured after tRASS min

500

500

500

µA

ICC7 †

Standby current

RAS = VIH,

CAS = VIL ,

Data out = enabled

5

5

5

mA

ICC10‡

Battery-backup

current

tRC = 125 µs,

tRAS ≤ 1 µs,

VCC – 0.2 V ≤ VIH ≤ 6.5 V,

0 V

≤ VIL ≤ 0.2 V, W and OE = VIH,

Addresses and data stable

500

500

500

µA

† Measured with outputs open

‡ TMS44409P only

NOTES:

3. Measured with a maximum of one address change while RAS = VIL

4. Measured with a maximum of one address change while CAS = VIH

capacitance over recommended ranges of supply voltage and operating free-air temperature,

PARAMETER

MIN

MAX

UNIT

Ci(A)

Input capacitance, A0 – A9

5

pF

Ci(OE)

Input capacitance, OE

7

pF

Ci(RC)

Input capacitance, CAS and RAS

7

pF

Ci(W)

Input capacitance, W

7

pF

Co

Output capacitance

7

pF

§ Capacitance measurements are made on a sample basis only.

NOTE 5: VCC = 5 V ± 0.5 V, and the bias on pins under test is 0 V.